CMS82C55AZ Intersil, CMS82C55AZ Datasheet - Page 21

• Manufacturer Part Number: CMS82C55AZ
• Description: IC I/O EXPANDER 24B 44PLCC
• Manufacturer: Intersil

Specifications of CMS82C55AZ

• Interface: Programmable
• Number Of I /o: 24
• Interrupt Output: No
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Clock: -

Timing Waveforms
NOTE: Any sequence where WR occurs before ACK and STB occurs before RD is permissible. (INTR = IBF • MASK • STB • RD + OBF • MASK
• ACK • WR)
PERIPHERAL
OUTPUT
INTR
INTR
ACK
OBF
BUS
ACK
STB
OBF
WR
IBF
WR
RD
CPU TO 82C55A
DATA FROM
(Continued)
21
MS82C55A, MQ82C55A, MP82C55A
tWIT
(28)
PERIPHERAL TO 82C55A
FIGURE 28. MODE 1 (STROBED OUTPUT)
tWOB
(21)
FIGURE 29. MODE 2 (BIDIRECTIONAL)
DATA FROM
tPS (17)
tSIB
(23)
tPH (18)
(16)
tST
tWB (12)
tWOB (21)
(NOTE)
tAK (15)
82C55A TO PERIPHERAL
tAOB (22)
tAD (19)
DATA FROM
tAK
(15)
tAOB
(22)
tAIT (27)
tKD
(20)
82C55A TO CPU
tRIB (24)
DATA FROM
(NOTE)
June 15, 2006
FN6140.2