SMC82C55AC-5 ETC1 | Alldatasheet
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Technical content
CMOS PROGRAMMABLE PERIPHERAL INTERFACE @24 Bit Input/Output @improved DC Driving Capability @Low Power IDESCRIPTION The SMC82CSEAC-5 is a CMOS General Purpose Programmable 1/0 device designed for use with an 8/16 bit CPU. The device has 24 programmable 1/0 pins that can be individually programmed in two groups of 12.
FEATURES
©24 programmable 1/0 pins @Compatible with BOXX series of microprocessors @Direct bit set/reset capability @improved DC driving capability @Single 5V (+10%) power supply @TTL compatible @Package ee GO-pin DIP 40-pin SOP* *Under development MBLOCK DIAGRAM INPIN CONFIGURATION a ee | | peach aoplpas i i "A2 [] 2 39{7) PAS re) 3 oe PAIT]3 —-3aeag no] cows LS) 8 | Goon Fos | | pao 37D par | Q—~ fee! Contr Poon Ly me | ROCs 3610 WR | OO) Conte nq“ 59 Pa | cs6 35 RESET | 20 O— tore [| 8 on | VssG7 @ 346 po | neser O (= Sm | Aigjs § 33601 | ed 4 [Hy Be E=9R% | | als 8 32602 | | aul jaf esate ET} res Pc7 Gio 8 3103 | see ree | Pce({11 & 30f) D4 | SF 9 bane LE meee pcs Giz & 25FIos | 05 Toate cise bet | pcai3 5 2861 v6 | os] Be {| ciel } PcoCia & 275}07 | BE Soe Le! E83 ) pris 26 voo |
8 Soe [I Gomes Ft) pes | Pc2ji6 = 25 pa
| 00 CF Port [$9 po ‘ | pe3iz 247) PB6 | j | on Fy bed Pao Cis 232 pes | ve Q =) 8: PBiCji9 = 22-5} Ppa | oti D a0 Pe2 C420 217) pes | | | | | | | C19
a MABSOLUTE MAXIMUM RATINGS (Wss=0V, Ta=25'C) Supply voltage Voo | 0.8 to7 input voltage |= Wi__|~CWithrrespect to Vss | =0.8 to Vop+0.3 Output voltage | VO | =0.8 to Voo+0.8 Operating temperature | Tw | — 90 1075 c Storage temperature | Tse non Te touo |S IERECOMMENDED OPERATING CONDITIONS (Ta=—20 to 75°C, unless otherwise noted) a Supply voltage | Mss f= [0 = v
ELECTRICAL CHARACTERISTICS
@DC Electrical Characteristics (Ta=~20 to 75°C, Voo=5V+ 10%, Vss =0V, unless otherwise noted) Parameter ‘Symbol Conditions Min [tye | Max | unit | High-level input voltage | Vim = 20 | — (|voros| Vv | Lowlevelinput voltage | Vu | f= | oe | Outout high voltage*? | Von + © oy = = 40008 To 14 | = | = v Output low voitage Vou ty =2.5mA a = —] 04 Supply curent from Voo | too | Vesetl Alurmut mode | — i | nN a eT ig |e WO Yoo) "so aa Cy [WarVan 1M tive T2=B5C| | “10 |r CoN cicimictminetest ‘+1 Current flowing into an IC is positive, out is negative. Sere eetalion current must be less than —G4mA on port B, C, and —G2mA on Port A. @AC Electrical Characteristics © Timing Requirements (Ta=—20 to 75°C, Voo=5V+10%, Vss=0V, unless otherwise noted) Ce mr EET tote me | te | nm ont | Read pulse width tw tar pe t= f= Petted ap ne eoorad | tsurem | tw | 0 | a ah a | Pepperdine ataresd | tare) | toh oj - f= Ts ‘Acdress setup time before reed | tum tar 0 = “Adiess hold time atterread | tray | tea 4 0 — = ns Acknowledge pulse width tax 300 = = ns “Strobe pulse width twste) tr 350 - | - ns Peripheral setup tne belo tobe tsees | | 0 =) = ns Perea hd tre ate sce | tsramey | tPA 150 = [= ns “Read/write cycle time | tomw 1 “tev | 850 = — | ns C-20
@Switching Characteristics (Ta= ~20 to 78°C, Vop =5V+ 10%, unless otherwise noted) [Pea [ Sint [SESE] constons [Mn | te [mer [ont] ge oom is ion Ue rom read to Seating ea team | tor 000 Fas Propagation time from write | tenncwre) | tooutpet trinqwee, | tO ee ne oer [teste | tse _ _ 300 | ns fener EE Tegra | to — | 0s Pan Be om rad Te man) “ter 400 ns Propagation ew Wom ad (O(a, tee C.=150pF [30 | ns | ation tine Wom ack trowere | to | Propagation time frm ak teawenre, | tho | 0 | +3 Test conditions are not applied. *4 AC Testing waveform Input puise level 0.45 to 2.4V 24— ez z Input pulse rise time 10ns oss. Input pulse fall time 10ns Reference level input Vin=2V, Va =0.8V Output — Vor 2V, Vo.=0.8V IBFUNCTIONS The SMC82CSSAC-5 has programmable I/O pins that interface peripheral equipment to the CPU, The system software programs the functional configuration of the device. The 24 programmable 1/0 pins may be individually configured in two groups of 12. Each group has three ma- jor modes of operation : 0, 1 and 2. In mode 0, each group of 12 I/O pins may be programmed in sets of four inputs or outputs. In mode 1, each group of 12 \\/Opins may be grouped as one 8-bit I/O data port and one 4- bit control/status port. Mode 2 is used in Group A only, as one 8-bit bidirectional port and one 5-bit control /status port. In mode 1 or 2, the control/status port bits can be set or reset by the CPU. A RESET pin is provided to clear ail internal registers and set all ports to an input mode. c-21
@Timing Chart Iming Chart | me bus read operation | tw | | = | tsa tam CS, AO, Al | Trae Toa | DO to 07 | oo re el ‘OData bus write operation \\ tw | WR | tsuaw, ten | TS, AO, Al i} Tease Tao) DO to D7 OMode Port input RD ture) tenet, PORT INPUT ir Mode Qt Portoutpt | WR | tome | Tear | PORT OUTPUT | Sd c-22
Mode | Strobed input : | RD _ tran taupesta ester PORT Mh SS INPUT NN! t// | Mode | Strobed output | tw | wR i} IN SoS ! oer Y/ | | tenuownray | truant) | | | | P | | INTR trowweey | PORT ; OUTPUT / | ——— C-23
| oMode 2 Bidirectional wR = a pees] | ] \\_ ee | oBF rr | \\ | \\ INTR | | \\ | | Lee, KCK | tur | | i] sve 1 | tr st0 9m ot | | (BF / RO _tscresta teaacere | v5 INTR™=IBF-MASK-STB-RD + OBF-MASK-AGK-WR OO APPLICATION The SMC 82C55AC-5 is used as a general purpose programmable 1/O device designed to interface peri- pheral equipment to the 80XX series of microprocessors. PACKAGE DIMENSIONS (C40-8) roy opin vip | (M40-B a poacuopoaat 40-pin SOP | se ae 4h, JN unt inch vat inch _ fmm) a (mm) c-24