N341256 ETC1

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Features

© CMOS SRAM organized as 32,768 x bits © Single +5.0V(+10%) Power Supply ! @ High Speed Access time : 12/15/20/25ns © Low power operation i Active : 180mA(max.) ' Standby : 60mA max.) 28pin Plastic DIP(300mil) ‘@ Package 8 -28pin Plastic DIP300mil) -28pin Plastic SOJ(300mil) ; _28pin Plastic TSOPCType-1) 28pin Plastic SOJ(300mil) 28pin Plastic TSOPCType-1) ™ Description The N341256 is a high performance CMOS static RAM Reading is accomplished when WE is High and CE and the organized as 32,768 x 8bits. output enable (OB) are both Low. ‘Writing to this device is accomplished when the write enable The N341256 operates from a single +5.0V power supply and all (WE) and the chip select (CE) inputs are both Low. inputs are fully TTL compatible Functional Block Diagram AO — ps — . Dd] om Address . Decoder . enon * . Matrix aa : rrr voo ~ Input Column VO | . 1 Data | | Contro! | vo7 : | a ad oe ——_) eee mM 9012498 o000223 41b

28 pin Plastic DIP/SOJ 28 pin Plastic TSOP (Type-1) = oe 28 ato aia jo 28 |b vec Ki H@) era AI2 O/2 27 WE "7 d|3 36/5 A13 Ag 3 26 07 ae 4 28 | AS agli 25 06 AS c/s 24 |p AS AISC5 24 05 Aa clé 23/5 AL We C6 23 vo4 A3 |7 22 |b OF vec C47 22 E903 A2c/8 21 A10, AIS 8 at GND AI Gia 20 CE AI2 9 20 VO2 AO Gj10 19/5 vO7 ATC 10 19 vot woo C] 14 13/5 vO6 agit 18 F500 vO1 Gl 12 17/5 Vos AS 12 175A VO2 Gj13 16] VO4 A413 16 A GND cl i4 15 }3 YOS Ag 14 1s A Pin Description PIN NAME Dosing WO0-V07__| Data input/output - CE __| Chip Enable input SE ___| Output Enable input WE Write Enable inp: Powor Supply Pin (+5V) ™ Mode Selection Table [ oe | we [| co | wo | moe ow | tow pawn | te | High tow | High impedance @@ 9012498 O000ee4 352° mm

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@ Absolute Maximum Ratings ‘Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS TERM | Terminal Voltage ‘may cause permanent damage to the device. This is a stress rating only with Respect to 0.510 7.0 v and functional operation of the device at these or any other conditions GNO ‘above those indication in the operational section of this specification is - not implied. Exposure to absolule maximum rating conditions for TA Operating 01070 °c extended periods may affect reliability. ‘Temperature TeIAS | Temperature Under | -55 to 125 °C Bias TsTa | Storage “55 to 125 °c ‘Temperature PT Power Dissipation 1.0 w lout DC Output Curent | 50 mA im Recommended Operating Conditions Recommended Operating Temperature and Supply Voltage Ambient GND | vec Temperature | Recommended DC Operating Conditions vec Supply Voltage | 4.5 | 5.0 | 55 v GND Supply Voltage | 0 | 0 ° v Input High Voltage | 2.2 | - | vec+os | Vv Inputtow Voltage | 0.5 | - | 08 Vv Notes : VIL (min) =-3.0V for pulse width less than 20ns. @ Capacitance (TA = +25°C, f = 1.0MHz) Parameter | Conan [wax | unt _] SSS @@ 9012498 O0002e5 255

Figure 1. Output load Equivalent igure 2. Output load Equivalent

Description Symbol |_Na41256-12 | Na41266-15 | N341256-20 ead Cycle | win, [tox | in | ax. [wins [Max | win, | Max. | [Readoyaeime Tm |e | | | ls | | 2s | Chip enable access time _ ACE | 12 | [2s | Output hold trom address change ton 3 | | 3 | 3 | Chip enable to outputiniow-Z Ea ee ce Chip disable to output high-Z is [ _ | [s | Chip enable t power up time _ ufo ° fo] | | ns _| Chip enable ti power down time PD 12 [ys [feo | [as [ns _| Output enable acooss time [woe | fe | fe | | fe [ns | |Ouputensdierooupniniowz | uzoe | o | | o | | o | | ol] | m | Louputassbietooupminninz | woe | is | | s | ts | | | me | Note : tLZCE, tHZCE, tLZOE, tHZOB, tPU and tPD are simulated values. (Vee = 5.0V 10%, TA = 0 to +70°C) Description Symbol |_Na4i2s6-12 N341266-20 Unit Adress valid to end of write ‘aw pet fa fs ne | Adkess set-up time | ws fo} fe] jo] [ol ms | | Adcrosohotdtomendotwite [ta | co | | o | fo | fo || oe | | wite putso wens we two |e | ts | | [oaascuptine | ws tr | | | | | [osarowime we Po | To | fot | | witedsavietoouputiniowz | uzwe | 0 | | o | | of | o | | ms | LWiteenabietoouputinnion2 | wwe | | @ | | a | i 3 | | | os | Note : tLZWE and tLZWE are simolated values. ee me 5012498 o000227 Ob) am

Read Cycle No.1 ——~ tre ADDR taa ‘OH mg] DOUT Previous data valid Data valid Undefined Read Cycle No.2 — tRC CE ——— tACE tHzce OE VAOE THZ0E | 'LZ0E ‘LZCE Write Cycle No.1 (Write Enable Controlled) twe ADDR a taw tow AH: cm ZZ HT ZIZIZ IIL we As twp WE KZ DIN KDatavaid | > FEB] undetined THZWE- *LZWE Write Cycle No.2 (Chip Enable Controlled) two: ADDR > t, tw t +t, ce AS cw ‘AH WE 2 a EE vndetines tps tDH @@ 9012498 co00228 TTS

TS Plastic TSOP (Type 1) 41256 256Kbit SRAM 32K X8 sea devon | _ Current (mA) |_ Standby Current (mA) N361256P-12 2aPin Plastic DIP (900m [nseresosni2 | ne] tao | goin Pastis $04 (00m [nosrasors-ie | te | tage zarin pst '30 (10-1 | 1s a 0 noesers1s | ts || sain laste TSOP (Typet 40 | 2apin plastic DIP (200m No412568).20 40 |__29Pin Plastic $04 (200m 20 | 160 rn 28P!n Plastic TSOP (Type-t [nosraser2s | as | tsa | ts | erin paste DIP (coo N3412568)-25, 35____|_28Pin Plastic SO (300mil NN341256TS-25 [es | 35 28Pin Plastic TSOP (Type-1 SSeS mm 9012498 0000229 934 me

™ Package Information 28pin Plastic DIP (300mil) MILLIMETERS, 95.0020.20 | 1,978 +0.008 |e | 720010 | o2e320.004 28 aoooale | 0 | 0452008 | 001820008 | i 0.70 40.028 ° 7.00 * 0.276 fa K -0.50 + 0.008 A L +0.40 40.016 i 6 4.00 0.187 | =0.20 = 0.008, | 40.20 +0.008, Ht | H 1 3.30 0.190 | HU SRY J 0.70 0.20 0.028 0.008 Ir Cc N M _t | stos010 | 0.31920,004_| M 15° 15° 28pin Plastic SOJ (300mil) MILLIMETERS INCHES | A | teioz010 | o7iazo008 | [8 | 7e0z010 | 070100 | Soeoeoecoocas!} tarp. | 0.05 TYP. : | [> | 0462008 | 0.018008 J -fennnenneninetnenninnnnnnnnee |B +0.10 40,008 © i I F 3.43, 0.135, SoS SS Sao -0.30 + 0.012 1 14 [Ca eeoz0e | arerzoces | 60 *°10 | ggg 0.004 in =0.20 -0.008 fd | k | 2252010 | 0.093+0.006 re re E J ' oF : Fees) Lu [or fr | 3 M@® 9012498 0000230 b5b mm

28pin Plastic TSOP (Type 1) A 0.828 BSC._ A 8B 11.80 BSC. 0.465 BSC. bd Lo Cc | 8.00Bse. 0.1315 BSC, Es ° = 0 | o1otozs Ee = | | & | oz2z005 | ooo000e | | Eo | ¢ | c0st0015 | 0.00210. 0.008 oI fon ofS |_| 1002008 | 0.0292 0002 So nd || szomax. | o.o87 max. J one “aot = 0.05 ~ 0.002 H [kde owe oo Sqm tr 4 G E F a WB 9012498 0000231 Sic