A428316

A428316 AMICC | Alldatasheet

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Preliminary 256K X 16 CMOS DYNAMIC RAM WITH EDO PAGE MODE PRELIMINARY (August, 2002, Version 0.3) AMIC Technology, Inc. Document Title 256K X 16 CMOS DYNAMIC RAM WITH EDO PAGE MODE

Revision History

Rev. No. History Issue Date Remark

0.0 Initial issue June 13, 2001 Preliminary

0.1 Modify AC data April 26, 2002

0.2 Modify DC data and all parts guarantee self-refresh mode June 10, 2002

0.3 Delete -30,-40 grade and add -25 grade August 20, 2002

Preliminary 256K X 16 CMOS DYNAMIC RAM WITH EDO PAGE MODE PRELIMINARY (August, 2002, Version 0.3) 1 AMIC Technology, Inc.

Features

n Organization: 262,144 words X 16 bits n Part Identification - A428316 (512 Ref.) n Single 5.0V power supply/built-in VBB generator n Low power consumption - Operating: 110mA (-25 max) - Standby: 2.5mA (TTL), 1.0mA (CMOS) 1.0mA (Self-refresh current) n High speed - 25/35 ns RAS access time - 12/17 ns column address access time - 8/10 ns CAS access time - 12/16 ns EDO Page Mode Cycle Time n Industrial operating temperature range: -40°C to 85 °C for -U n Fast Page Mode with Extended Data Out n Separate CAS (UCAS ,LCAS ) for byte selection n 512 Refresh Cycle in 8ms n Read-modify-write, RAS -only, CAS -before- RAS , Hidden refresh capability n TTL-compatible, three-state I/O n JEDEC standard packages - 400mil, 40-pin SOJ - 400mil, 40/44 TSOP type II package General Description The A428316 is a new generation randomly accessed memory for graphics, organized in a 262,144 -word by 16- bit configuration. This product can execute Byte Write and Byte Read operation via two CAS pins. The A428316 offers an accelerated Fast Page Mode Pin Configuration nnSOJ nn TSOP VCC I/O0 I/O1 NC VCC I/O13 I/O14 I/O15 VSS A428316S WE RAS I/O12 OE I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 NC NC VCC VSS UCAS LCAS NC I/O8 I/O9 I/O10 I/O11 VSS VCC I/O0 I/O1 NC A3 A4 I/O13 I/O14 I/O15 VSS A428316V WE RAS I/O12 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 NC NC VCC VSS UCAS LCAS NC I/O8 I/O9 I/O10 I/O11 VSS VCC OE cycle with a feature called Extended Data Out (EDO). This allow random access of up to 512 words within a row at a 83/62 MHz EDO cycle, making the A428316 ideally suited for gra phics, digital signal processing and high performance computing systems. Pin Descriptions Symbol Description A0 – A8 Address Inputs I/O0 - I/O15 Data Input/Output RAS Row Address Strobe LCAS Column Address Strobe for Lower Byte (I/O0 – I/O7) UCAS Column Address Strobe for Upper Byte (I/O8 – I/O15) WE Write Enable OE Output Enable VCC 5.0V Power Supply VSS Ground NC No Connection

PRELIMINARY (August, 2002, Version 0.3) 2 AMIC Technology, Inc. Selection Guide Symbol Description -25 -35 Unit tRAC Maximum RAS Access Time 25 35 ns tAA Maximum Column Address Access Time 12 17 ns tCAC Maximum CAS Access Time 8 10 ns tOEA Maximum Output Enable ( OE ) Access Time 8 10 ns tRC Minimum Read or Write Cycle Time 44 62 ns tPC Minimum EDO Cycle Time 12 16 ns Functional Description The A428316 reads and writes data by multiplexing an 18 - bit address into a 9 -bit row and 9 -bit column address. RAS and CAS are used to strobe the row address and the column address, respectively. The A428316 has two CAS inputs: LCAS controls I/O 0- I/O7, and UCAS controls I/O 8 - I/O15, UCAS and LCAS function in an identical manner to CAS in that either will generate an internal CAS signal. The CAS function and timing are determined by the first CAS ( UCAS or LCAS ) to transition low and by the last to transition high. Byte Read and Byte Write are controlled by using LCAS and UCAS separately. A Read cycle is performed by holding the WE signal high during RAS /CAS operation. A Write cycle is executed by holding the WE signal low during RAS / CAS operation; the input data is latched by the falling edge of WE or CAS , whichever occurs later. The data inputs and outputs are routed through 16 common I/O pins, with RAS , CAS , WE and OE controlling the in direction. EDO Page Mode operation all 512 columns within a selected row to be randomly accessed at a high data rate. A EDO Page Mode cycle is initiated with a row a ddress latched by RAS followed by a column address latched by CAS . While holding RAS low, CAS can be toggled to strobe changing column addresses, thus achieving shorter cycle times. The A428316 offers an accelerated Fast Page Mode cycle through a feature called Extended Data Out, which keeps the output drivers on during the CAS precharge time (t cp). Since data can be output after CAS goes high, the user is not required to wait for valid data to appear before starting the next access cycle. Data-out will remain valid as long as RAS and OE are low, and WE is high; this is the only characteristic which differentiates Extended Data Out operation from a standard Read or Fast Page Read. A memory cycle is terminated by returning both RAS and CAS high. Memory cell data will retain its correct state by maintaining power and accessing all 512 combinations of the 9 -bit row addresses, regardless of sequence, at least once every 8ms through any RAS cycle (Read, Write) or RAS Refresh cycle ( RAS -only, CBR, or Hidden). The CBR Refresh cycle automatically controls the row addresses by invoking the refresh counter and controller. Power-On The initial application of the VCC supply requires a 200 µs wait followed by a minimum of any eight initializati on cycles containing a RAS clock. During Power -On, the VCC current is dependent on the input levels of RAS and CAS . It is recommended that RAS and CAS track with VCC or be held at a valid V IH during Power -On to avoid current surges.

PRELIMINARY (August, 2002, Version 0.3) 3 AMIC Technology, Inc. Block Diagram Recommended Operating Conditions (Ta = 0°C to +70°C or -40°C to +85°C) Symbol Description Min. Typ. Max. Unit Notes VCC Power Supply 4.5 5.0 5.5 V 1 VSS Input High Voltage 0.0 0.0 0.0 V 1 VIH Input High Voltage 2.4 - VCC + 1.0 V 1 VIL Input Low Voltage -0.5 - 0.8 V 1 VSS VCC CAS Clock Generator Column Address Buffers Refresh Counter & Controller Row Address Buffers RAS Clock Generator WE Clock Generator ROW DECODER OE Clock Generator AY0 - AY8 AX0 - AX8 Sense Amplifiers Column Decoders Data I/O Buffers Memory Array 512 x 512 x 16 512 . . 512 x 16 . . I/O0 to I/O15 OE WE UCAS LCAS A0 - A8 RAS

PRELIMINARY (August, 2002, Version 0.3) 4 AMIC Technology, Inc. Truth Table Function RAS UCAS LCAS WE OE Address I/Os Notes Standby H H H X X X High-Z Read: Word L L L H L Row/Col. Data Out Read: Lower Byte L H L H L Row/Col. I/O0-7 = Data Out I/O8-15 = High-Z Read: Upper Byte L L H H L Row/Col. I/O0-7 = High-Z I/O8-15 = Data Out Write: Word L L L L H Row/Col. Data In Write: Lower Byte L H L L H Row/Col. I/O0-7 = Data In I/O8-15 = X Write: Upper Byte L L H L H Row/Col. I/O0-7 = X I/O8-15 = Data In Read-Write L L L H→ L L→ H Row/Col. Data Out → Data In 1,2 EDO-Page-Mode Read: Hi-Z -First cycle -Subsequent Cycles L L H→ L H→ L H→ L H→ L H H H→ L H→ L Row/Col. Col. Data Out Data Out EDO-Page-Mode Write -First cycle -Subsequent Cycles L L H→ L H→ L H→ L H→ L L L H H Row/Col. Col. Data In Data In EDO-Page-Mode Read-Write -First cycle -Subsequent Cycles L L H→ L H→ L H→ L H→ L H→ L H→ L L→ H L→ H Row/Col. Col. Data Out → Data In Data Out → Data In 1, 2 1, 2 Hidden Refresh Read L→ H→ L L L H L Row/Col. Data Out 2 Hidden Refresh Write L→ H→ L L L L X Row/Col. Data In → High-Z 1 RAS -Only Refresh L H H X X Row High-Z CBR Refresh H→ L L L X X X High-Z 3 Self Refresh H→ L L L H X X High-Z Note: 1. Byte Write may be executed with either UCAS or LCAS active. 2. Byte Read may be executed with either UCAS or LCAS active. 3. Only one CAS signal (UCAS or LCAS ) must be active.

PRELIMINARY (August, 2002, Version 0.3) 5 AMIC Technology, Inc. Absolute Maximum Ratings* *Comments Stresses a bove those listed under "Absolute Maximum Ratings" may cause permanent damage to this device. These are stress ratings only. Functional operation of this device at these or any other conditions above those indicated in the operational sections of these specification is not implied or intended. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability. -25 -35 Unit Test Conditions Notes Symbol Parameter Min. Max. Min. Max. IIL Input Leakage Current -5 +5 -5 +5 µA 0V ≤ Vin ≤ VCC Pins not under Test = 0V IOL Output Leakage Current -5 +5 -5 +5 µA DOUT disabled, 0V ≤ Vout ≤ VCC ICC1 Operating Power Supply Current - 115 - 105 mA RAS ,UCAS ,LCAS and Address cycling; tRC = min. 1, 2 ICC2 TTL Supply Current Supply Current - 2.5 - 2.5 mA RAS =UCAS =LCAS = VIH ICC3 Average Power Supply Current, RAS Refresh Mode - 115 - 105 mA RAS and Address cycling, UCAS =LCAS = VIH, tRC = min. ICC4 EDO Page Mode Average Power Supply Current - 115 - 105 mA RAS and address = VIL, UCAS ,LCAS and Address cycling; tPC = min. 1, 2 ICC5 CAS -before-RAS Refresh Power Supply Current - 115 - 105 mA RAS and UCAS or LCAS cycling; tRC = min. ICC6 CMOS Standby Power Supply Current - 1.0 - 1.0 mA RAS =UCAS =LCAS = VCC - 0.2V ICC7 Self Refresh Mode Current - 1.0 - 1.0 mA RAS =CAS ≤VSS+0.2V All other input high levels are VCC-0.2V or input low levels are VSS +0.2V VOH 2.4 - 2.4 - V IOUT = -5.0mA VOL Output Voltage - 0.4 - 0.4 V IOUT = 4.2mA

PRELIMINARY (August, 2002, Version 0.3) 6 AMIC Technology, Inc. AC Characteristics (VCC = 5.0V ± 10%, VSS = 0V, Ta = 0°C to +70°C or -40°C to +85°C) Test Conditions: Input timing reference level: VIH/VIL=2.4V/0.8V Output reference level: VOH/VOL=2.0V/0.8V Output Load: 2TTL gate + CL (50pF) Assumed tT=2ns -25 -35 Std Symbol Parameter Min. Max. Min. Max. Unit Notes tT Transition Time (Rise and Fall) 1 50 1 50 ns 4, 5 1 tRC Random Read or Write Cycle Time 44 - 62 - ns 2 tRP RAS Precharge Time 15 - 23 - ns 3 tRAS RAS Pulse Width 25 10K 35 10K ns 4 tCAS CAS Pulse Width 4 10K 6 10K ns 5 tRCD RAS to CAS Delay Time 10 21 10 25 ns 6 6 tRAD RAS to Column Address Delay Time 8 14 8 18 ns 7 7 tRSH CAS to RAS Hold Time 5 - 6 - ns 8 tCSH CAS Hold Time 25 - 31 - ns 9 tCRP CAS to RAS Precharge Time 5 - 5 - ns 10 tASR Row Address Setup Time 0 - 0 - ns 11 tRAH Row Address Hold Time 5 - 6 - ns 12 tCLZ CAS to Output in Low Z 3 - 3 - ns 8 13 tRAC Access Time from RAS - 25 - 35 ns 6,7 14 tCAC Access Time from CAS - 8 - 10 ns 6, 13 15 tAA Access Time from Column Address - 12 - 17 ns 7, 13 16 tOEA OE Access Time - 8 - 10 ns 17 tAR Column Address Hold Time from RAS 22 - 31 - ns 18 tRCS Read Command Setup Time 0 - 0 - ns 19 tRCH Read Command Hold Time 0 - 0 - ns 9

PRELIMINARY (August, 2002, Version 0.3) 7 AMIC Technology, Inc. AC Characteristics (continued) (VCC = 5.0V ± 10%, VSS = 0V, Ta = 0°C to +70°C or -40°C to +85°C) Test Conditions: Input timing reference level: VIH/VIL=2.4V/0.8V Output reference level: VOH/VOL=2.0V/0.8V Output Load: 2TTL gate + CL (50pF) Assumed tT=2ns -25 -35 Std Symbol Parameter Min. Max. Min. Max. Unit Notes 20 tRRH Read Command Hold Time Reference to RAS 0 - 0 - ns 9 21 tRAL Column Address to RAS Lead Time 12 - 17 - ns 22 tCOH Output Hold After CAS Low 3 - 3 - ns 23 tOFF Output Buffer Turn-Off Delay Time - 3 - 3 ns 8, 10 24 tASC Column Address Setup Time 0 - 0 - ns 25 tCAH Column Address Hold Time 5 - 6 - ns 26 tOES OE Low to CAS High Set Up 5 - 7 - ns 27 tWCS Write Command Setup Time 0 - 0 - ns 11 28 tWCH Write Command Hold Time 5 - 6 - ns 11 29 tWCR Write Command Hold Time to RAS 22 - 31 - ns 30 tWP Write Command Pulse Width 5 - 6 - ns 31 tRWL Write Command to RAS Lead Time 7 - 10 - ns 32 tCWL Write Command to CAS Lead Time 5 - 7 - ns 33 tDS Data-in setup Time 0 - 0 - ns 12 34 tDH Data-in Hold Time 5 - 6 - ns 12 35 tDHR Data-in Hold Time to RAS 22 - 31 - ns 36 tRWC Read-Modify-Write Cycle Time 62 - 85 - ns 37 tRWD RAS to WE Delay Time (Read-Modify-Write) 34 - 46 - ns 11 38 tCWD CAS to WE Delay Time (Read-Modify-Write) 17 - 21 - ns 11

PRELIMINARY (August, 2002, Version 0.3) 8 AMIC Technology, Inc. AC Characteristics (continued) (VCC = 5.0V ± 10%, VSS = 0V, Ta = 0°C to +70°C or -40°C to +85°C) Test Conditions: Input timing reference level: VIH/VIL=2.4V/0.8V Output reference level: VOH/VOL=2.0V/0.8V Output Load: 2TTL gate + CL (50pF) Assumed tT=2ns -30 -35 Std Symbol Parameter Min. Max. Min. Max. Unit Notes 39 tAWD Column Address to WE Delay Time (Read-Modify-Write) 21 - 28 - ns 11 40 tOEH OE Hold Time from WE 5 - 6 - ns 41 tOEP OE High Pulse Width 5 - 5 - ns 42 tPC Read or Write Cycle Time (EDO Page) 12 - 16 - ns 14 43 tCPA Access Time from CAS Precharge (EDO Page) - 14 - 18 ns 13 44 tCP CAS Precharge Time 4 - 6 - ns 45 tPCM EDO Page Mode RMW Cycle Time 32 - 40 - ns 46 tCRW EDO Page Mode CAS Pulse Width (RMW) 24 - 30 - ns 47 tRASP RAS Pulse Width (EDO Page) 30 200K 35 200K ns 48 tCSR CAS Setup Time ( CAS -before-RAS ) 5 - 5 - ns 3 49 tCHR CAS Hold Time ( CAS -before-RAS ) 7 - 10 - ns 3 50 tRPC RAS to CAS Precharge Time 10 - 10 - ns 3 51 tOEZ Output Buffer Turn-off Delay from OE - 3 - 3 ns 8 52 tRASS RAS pulse width ( C -B-R self refresh) 100 - 100 - µs 53 tRPS RAS precharge time ( C -B-R self refresh) 44 - 62 - ns 54 tCHS CAS hold time ( C -B-R self refresh) -50 - -50 - ns

PRELIMINARY (August, 2002, Version 0.3) 9 AMIC Technology, Inc. Notes: 1. ICC1, ICC3, ICC4, and ICC5 depend on cycle rate. 2. ICC1 and ICC4 depend on output loading. Specified values are obtained with the outputs open. 3. An initial pause of 200 µs is required after power -up followed by any 8 RAS cycles before proper device operation i s achieved. In the case of an internal refresh counter, a minimum of 8 CAS -before-RAS initialization cycles instead of 8 RAS cycles are required. 8 initialization cycles are required after exten ded periods of bias without clocks. 4. AC Characteristics assume t T = 2ns. All AC parameters are measured with a load equivalent to two TTL loads and 50pF, VIL (min.) ≥ GND and VIH (max.) ≤ VCC. 5. VIH (min.) and V IL (max.) are reference levels for measu ring timing of input signals. Transition times are measured between VIH and VIL. point only. If tRCD is greater than the specified tRCD (max.) limit, then access time is controlled exclusively by t CAC. point only. If tRAD is greater than the specified tRAD (max.) limit, then access time is controlled exclusively by tAA. 8. Assumes three state test load (5pF and a 500 Ω Thevenin equivalent). 9. Either tRCH or tRRH must be satisfied for a read cycle. 10. tOFF (max.) defines the time at which the output achieves the open circ uit condition; it is not referenced to output voltage levels. 11. tWCS, t WCH, t RWD, t CWD and t AWD are not restrictive operating parameters. They are included in the data sheet as electrical characteristics only. If t WCS ≥ t WCS (min.) and t WCH ≥ t WCH (min .), the cycle is an early write cycle and data-out pins will remain open circuit, high impedance, throughout the entire cycle. If t RWD ≥ tRWD (min.) , t CWD ≥ tCWD (min.) and t AWD ≥ tAWD (min.), the cycle is a read -modify-write cycle and the data out will contain data read from the selected cell. If neither of the above conditions is satisfied, the condition of the data out at access time is indeterminate. 12. These parameters are referenced to UCAS and LCAS leading edge in early write cycles and to WE leading edge in read-modify-write cycles. 13. Access time is determined by the longer of t AA or tCAC or tCPA. 14. tASC ≥ tCP to achieve tPC (min.) and tCPA (max.) values.

PRELIMINARY (August, 2002, Version 0.3) 10 AMIC Technology, Inc. Word Read Cycle tRAS(3) tRP(2) tRC(1) tCRP(9) tCSH(8) tRCD(5) tRSH(7) tCAS(4) tASR(10) tCRP(9) tRAH(11) tASC(24) tCAH(25) tRAD(6) tRAL(21) tRCH(19) tRRH(20) tAR(17) tRCS(18) tOEA(16) tRAC(13) tAA(15) tCAC(14) tCLZ(12) tOEZ(51) tOFF(23) High-Z : High or Low Valid Data-out Row Address Column Address I/O0 ~ I/O15 OE WE A0~A8 UCAS LCAS RAS

PRELIMINARY (August, 2002, Version 0.3) 11 AMIC Technology, Inc. Word Write Cycle (Early Write) tRAS(3) tRP(2) tRC(1) tCRP(9) tCSH(8) tRCD(5) tRSH(7) tCAS(4) tASR(10) tCRP(9) tRAH(11) tASC(24) tCAH(25) tRAD(6) tRAL(21) tWCH(28) : High or Low Row Address Column Address I/O0 ~ I/O15 OE A0~A8 UCAS LCAS RAS tAR(17) tCWL(32) tRWL(31) tWP(30) tWCS(27) Valid Data-in tDS(33) tDH(34) WE tWCR(29) tDHR(35)

PRELIMINARY (August, 2002, Version 0.3) 12 AMIC Technology, Inc. Word Write Cycle (Late Write) tRAS(3) tRP(2) tRC(1) tCRP(9) tCSH(8) tRCD(5) tRSH(7) tCAS(4) tASR(10) tCRP(9) tASC(24) tCAH(25) tRAD(6) tRAL(21) Row Address Column AddressA0~A8 UCAS LCAS RAS tAR(17) tCWL(32) tRWL(31) tWP(30) tRAH(11) tOEH(40) tDS(33) tDH(34) I/O0 ~ I/O15 : High or Low OE WE High-Z Vaild Data-in tWCR(29) tDHR(35)

PRELIMINARY (August, 2002, Version 0.3) 13 AMIC Technology, Inc. Word Read-Modify-Write Cycle tRAS(3) tRP(2) tRWC(36) tCRP(9) tCSH(8) tRCD(5) tRSH(7) tASR(10) tCRP(9) tRAH(11) tCAH(25) tRAD(6) Row Address Column AddressA0~A8 UCAS LCAS RAS tAR(17) tRWL(31) tASC(24) tCWL(32) tAWD(39) tCWD(38) tRWD(37) tWP(30) tOEA(16) tOEZ(51) tCLZ(12) tCAC(14) tAA(15) tRAC(13) tDS(33) tDH(34) High-Z Data-out Data-in : High or Low I/O0 ~ I/O15 OE WE tOEH(40) tRCS(18)

PRELIMINARY (August, 2002, Version 0.3) 14 AMIC Technology, Inc. EDO Page Mode Word Read Cycle tRASP(47) tRP(2) RAS UCAS LCAS tCAS(4)tCAS(4)tCAS(4) tRCD(5) tCSH(8) tCRP(9) tCRP(9) tPC(42) tRSH(7) tASR(10) tRAH(11) tRAD(6) tAR(16) tRAL(21) A0~A8 OE WE I/O0 ~ I/O15 : High or Low tASC(24) tCP(44) tCSH(8) tASC(24) tCAH(25) tCAH(25) Row Column Column Column tRCH(19)tRCS(18)tRCS(18) tRCH(25) tRCS(18) tCAH(25) tRRH(20) tOFF(23) tOEZ(51) tAA(15) tOEA(16) tOEP(41) tCAC(14) tCLZ(12) tOEZ(51) tCPA(43) tOES(26) tAA(15) tOEA(16) tCOH(22) tCAC(14)tRAC(13) tCAC(14) tCLZ(12) Data-out Data-out Data-out

PRELIMINARY (August, 2002, Version 0.3) 15 AMIC Technology, Inc. EDO Page Mode Early Word Write Cycle tRASP(47) tRP(2) RAS UCAS LCAS tCAS(4)tCP(44)tCAS(4)tCP(44)tCAS(4) tRCD(5) tCSH(8) tCRP(9) tCRP(9) tPC(42) tRSH(7) tASR(10) tRAH(11) tRAD(6) tASC(24) tCAH(25) tASC(24) tCAH(25) tCAH(25) tASC(24) tRAL(21) Row Column ColumnA0~A8 WE tCWL(32) tWCH(28) tWCS(27) tWCS(27) Column tCWL(32) tWCH(28) tWCS(27) tWCH(28) tCWL(32) tRWL(31) tWP(30) tWP(30) tWP(30) tDH(34) tDS(33) tDH(34) tDS(33) tDS(33) tDH(34) Data-in Data-in Data-in I/O0 ~ I/O15 OE : High or Low

PRELIMINARY (August, 2002, Version 0.3) 16 AMIC Technology, Inc. EDO Page Mode Word Read-Modify-Write Cycle tRASP(47) RAS tCRW(46)tCP(44)tCRW(46)tCP(44)tCRW(46) tRCD(5) tCSH(8) tCRP(9) tCRP(9) tPCM(45) tRSH(7) tRP(2) tASR(10) tRAH(11) tRAD(6) tASC(24) tCAH(25) tASC(24) tCAH(25) tASC(24) tCAH(25) tRAL(21) tRCS(18) tCWD(38) tRWD(37) tCWL(32) tCWD(38) tCWL(32) tCWD(38) tCWL(32) tRWL(31) tOEA(16) tOEA(16) tOEA(16) tWP(30) tWP(30) tWP(30) tAWD(39) tAWD(39) tAWD(39) tCAC(14) tAA(15) tRAC(13) tOEZ(51) tDS(33) tAA(15) tCPA(43) tDH(34) tOEZ(51) tDS(33) tDH(34) tOEZ(51) tDS(33) tDH(34) tAA(15) tCPA(43) tCLZ(12) tCLZ(12) tCLZ(12) High-Z : High or Low I/O0 ~ I/O15 OE WE A0~A8 UCAS LCAS Data-out Data-in Data-out Data-in Data-out Data-in Row Column Column Column tOEH(40)

PRELIMINARY (August, 2002, Version 0.3) 17 AMIC Technology, Inc. RAS Only Refresh Cycle CAS Before RAS Refresh Cycle tRAS(3) tRP(2) tRC(1) RAS tCRP(9) tRPC(50) tASR(10) tRAH(11) A0~A8 UCAS : High or Low Row Note: WE, OE = Don't care. LCAS tRAS(3) tRP(2) tRC(1) RAS tRP(2) tRPC(50) tCP(44) tCSR(48) tCHR(49) tOFF(23) I/O0 ~ I/O15 UCAS High-Z : High or LowNote: WE, OE, Address = Don't care. LCAS

PRELIMINARY (August, 2002, Version 0.3) 18 AMIC Technology, Inc. Hidden Refresh Cycle (Word Read) tRAS(3) tRP(2) tRC(1) tCRP(9) tAR(17) tRCD(5) tASR(10) tCRP(9) tASC(24) tCAH(25) tRAD(6) A0~A8 UCAS RAS tRAH(11) tRRH(20)tRCS(18) I/O0 ~ I/O15 : High or Low OE High-Z tRAS(3) tRP(2) tCHR(49) tRC(1) tRSH(7) tRAL(21) tCAC(14) tOFF(23) tAA(15) tCLZ(12) tRAC(13) WE Row Column Valid Data-out LCAS tOEZ(51) tOEA(16)

PRELIMINARY (August, 2002, Version 0.3) 19 AMIC Technology, Inc. Hidden Refresh Cycle (Early Word Write) tRAS(3) tRP(2) tRC(1) tCRP(9) tAR(17) tRCD(5) tASR(10) tCRP(9) tASC(24) tCAH(25) tRAD(6) A0~A8 RAS tRAH(11) : High or Low OE tRAS(3) tRP(2) tCHR(49) tRC(1) tRSH(7) tRAL(21) WE Row Column tWCS(27) tWCH(28) tWP(30) tDS(33) tDH(34) Valid Data-in I/O0 ~ I/O15 UCAS LCAS

PRELIMINARY (August, 2002, Version 0.3) 20 AMIC Technology, Inc. EDO Page Mode Read-Early-Write Cycle (Pseudo Read-Modify-Write) RAS : High or Low I/O0 ~ I/O15 OE WE A0~A8 UCAS tRP(2)tRASP(47) tCRP(9) tCSH(8) tRCD(5) tCAS(4) tCP(44) tCAS(4) tCP(44) tCAS(4) tCPR(9) tRSH(7)tPC(42)tPC(42) Row Column Column tRAL(21) tCAH(25)tASC(24)tCAH(25)tASC(24) tCAH(25)tASC(24) tASR(10) tRAH(11) tRAD(6) Column tRCS(18) tRCH(19) tWCS(27) tWCH(28) Data-out Data-out Data-in tDH(34) tDS(33) tAA(15) tCAP(43) tCAC(14) tCOH(22) tAA(15) tRAC(13) tCAC(14) tOEA(16) LCAS

PRELIMINARY (August, 2002, Version 0.3) 21 AMIC Technology, Inc. Self Refresh Mode n Self Refresh Mode. a. Entering the Self Refresh Mode: The A428316 Self Refresh Mode is entered by using CAS before RAS cycle and holding RAS and CAS signal “low” longer than 100µs. b. Continuing the Self Refresh Mode: The Self Refresh Mode is continued by holding RAS “low” after entering the Self Refresh Mode. It does not depend on CAS being “high” or “low” after entering the Self Refresh Mode continue the Self Refresh Mode. c. Exiting the Self Refresh Mode: The A428316 exits the Self Refresh Mode when the RAS signal is brought “high”. tRASS(52)tRP(2) tCRP(9)tCSR(48)tRPC(50) RAS tRPS(53) tCHS(54) tASR(10) tCP(44) tOFF(23) A0~A8 : High or Low High-Z I/O0 ~ I/O15 UCAS LCAS ROW COL Note: WE, OE = Don't care.

PRELIMINARY (August, 2002, Version 0.3) 22 AMIC Technology, Inc. Capacitance (f = 1MHz, Ta = Room Temperature, VCC = 5.0V ± 10%) Symbol Signals Parameter Max. Unit Test Conditions CIN1 A0 - A8 5 pF Vin = 0V CIN2 RAS , UCAS , LCAS , WE , OE Input Capacitance 7 pF Vin = 0V CI/O I/O0 - I/O15 I/O Capacitance 7 pF Vin = Vout = 0V Ordering Codes Package RAS Access Time 25ns 35ns Self-Refresh SOJ 40L (400mil) A428316S-25 A428316S-35 Yes TSOP 40/44 L type II (400mil) A428316V-25 A428316V-35 Yes TSOP 40/44 L type II (400mil) A428316V-25U A428316V-35U Yes Note: -U is for industrial operating temperature range.

PRELIMINARY (August, 2002, Version 0.3) 23 AMIC Technology, Inc.

Package Information

SOJ 40L (400mil) Outline Dimensions unit: inches/mm Dimensions in inches Dimensions in mm Symbol Min Nom Max Min Nom Max Notes: 1. The maximum value of dimension D includes end flash. 2. Dimension E does not include resin fins. 3. Dimension e1 is for PC Board surface mount pad pitch design reference only. 4. Dimension S includes end flash. E HE 2140 A1 A2 e e1 C S D Seating Plane D y L A b b θ

PRELIMINARY (August, 2002, Version 0.3) 24 AMIC Technology, Inc. TSOP 40/44L (Type II) (400mil) Outline Dimensions unit: inches/mm E HE c A1 A2 A S D ye D B L L θ Dimensions in inches Dimensions in mm Symbol Min Nom Max Min Nom Max A1 0.002 - 0.006 0.05 - 0.15 e 0.031 BSC 0.80 BSC Notes: 1. The maximum value of dimension D includes end flash. 2. Dimension E does not include resin fins. 3. Dimension S includes end flash.