W65C22S Datasheet, PDF (5/46 Pages) List of Unclassifed Manufacturers – Versatile Interface Adapter (VIA)

The Western Design Center, Inc.
W65C22S Data Sheet
Table of Figures
FIGURE 1-1 READ HANDSHAKE OPERATION (PA ONLY).......................................................................................... 11
FIGURE 1-2 WRITE HANDSHAKE (PA AND PB) ............................................................................................................ 12
FIGURE 1-3 ONE-SHOT MODE (TIMER 1 AND TIMER 2) ............................................................................................... 17
FIGURE 1-4 FREE-RUN MODE (TIMER 1) ....................................................................................................................... 18
FIGURE1-5 PULSE COUNTING MODE (TIMER 2) .......................................................................................................... 20
FIGURE 1-6 SHIFT IN - COUNTER T2 CONTROL ........................................................................................................... 22
FIGURE-1-7 SHIFT IN - PHI2 CLOCK CONTROL ............................................................................................................ 22
FIGURE 1-8 SHIFT IN - EXTERNAL CB1 CLOCK CONTROL TIMING ........................................................................ 23
FIGURE 1-9 SHIFT OUT - FREE RUNNING T2 RATE TIMING ...................................................................................... 23
FIGURE 1-10 SHIFT OUT - T2 CONTROL TIMING.......................................................................................................... 24
FIGURE 1-11 SHIFT OUT - PHI2 CONTROL TIMING...................................................................................................... 24
FIGURE 1-12 SHIFT OUT - EXTERNAL CB1 CLOCK CONTROL TIMING .................................................................. 25
FIGURE 2-1 PIN PLCC PINOUT.......................................................................................................................................... 28
FIGURE 2-2 W65C22S 40 PIN PDIP PINOUT .................................................................................................................... 29
FIGURE 2-3 W65C22S 44 PIN QFP PINOUT...................................................................................................................... 30
FIGURE 2-4 PORT A BUFFER (PA0-PA7, CA2) ................................................................................................................ 33
FIGURE 2-5 PORT B BUFFER (PB0-PB7, CB1, AND CB2) .............................................................................................. 33
FIGURE 3-1 IDD VS VDD..................................................................................................................................................... 36
FIGURE 3-2 READ TIMING ................................................................................................................................................. 39
FIGURE 3-3 WRITE TIMING ................................................................................................................................................ 39
FIGURE 3-4 READ HANDSHAKE, PULSE MODE (CA2) .................................................................................................. 40
FIGURE 3-5 READ HANDSHAKE, HANDSHAKE MODE TIMING (CA2) .................................................................... 40
FIGURE 3-6 WRITE HANDSHAKE, PULSE MODE TIMING (CA2, CB2) ........................................................................ 41
FIGURE 3-7 WRITE HANDSHAKE, HANDSHAKE MODE TIMING (CA2, CB2) ............................................................ 41
FIGURE 3-8 PERIPHERAL DATA, INPUT LATCHING TIMING ...................................................................................... 42
FIGURE 3-9 DATA SHIFT OUT, INTERNAL OR EXTERNAL SHIFT CLOCK TIMING ................................................. 42
FIGURE 3-10 DATA SHIFT IN, INTERNAL OR EXTERNAL SHIFT CLOCK TIMING ................................................ 42
FIGURE 3-11 PULSE COUNT INPUT TIMING.................................................................................................................. 43
FIGURE 3-12 TEST LOAD (ALL DYNAMIC PARAMETERS) ........................................................................................ 43
FIGURE 4-1 IRQB DIFFERENCE ........................................................................................................................................ 44
FIGURE 4-2 HIGH RESISTANCE BUS HOLDING DEVICE ............................................................................................ 44
The Western Design Center
W65C22S
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