CMP82C55AZ Intersil, CMP82C55AZ Datasheet - Page 12

• Manufacturer Part Number: CMP82C55AZ
• Description: IC PROG PERIPHERAL INTFC 40-PDIP
• Manufacturer: Intersil

Specifications of CMP82C55AZ

• Interface: Bus
• Voltage - Supply: 4.5 V ~ 5.5 V
• Package / Case: 40-DIP (0.600", 15.24mm)
• Mounting Type: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -

CONTROL WORD
NOTE: Any sequence where WR occurs before ACK and STB occurs before RD is permissible. (INTR = IBF • MASK • STB • RD + OBF • MASK
• ACK • WR)
D7 D6 D5 D4 D3 D2 D1 D0
PERIPHERAL
1
1
INTR
ACK
OBF
BUS
STB
WR
IBF
RD
FIGURE 11. MODE CONTROL WORD
1/0 1/0
1/0
12
CPU TO 82C55A
DATA FROM
PC2-PC0
1 = INPUT
0 = OUTPUT
PORT B
1 = INPUT
0 = OUTPUT
GROUP B MODE
0 = MODE 0
1 = MODE 1
PERIPHERAL TO 82C55A
MS82C55A, MQ82C55A, MP82C55A
tWOB
DATA FROM
FIGURE 13. MODE 2 (BIDIRECTIONAL)
tPS
tSIB
tST
tPH
82C55A TO PERIPHERAL
WR
RD
tAD
DATA FROM
tAK
tAOB
FIGURE 12. MODE 2
tKD
82C55A TO CPU
DATA FROM
INTE
INTE
1
2
tRIB
PC2-PC0
PA7-PA0
PC3
PC7
PC6
PC4
PC5
3
8
INTRA
OBFA
ACKA
STBA
IBFA
I/O
June 15, 2006
FN6140.2