參數(shù)資料
型號: IMS82C55AZ
廠商: INTERSIL CORP
元件分類: 微控制器/微處理器
英文描述: CMOS Programmable Peripheral Interface
中文描述: 24 I/O, PIA-GENERAL PURPOSE, PQCC44
封裝: ROHS COMPLIANT, PLASTIC, MS-018AC, LCC-44
文件頁數(shù): 12/24頁
文件大?。?/td> 502K
代理商: IMS82C55AZ
12
FN6140.1
June 28, 2005
NOTE: Any sequence where WR occurs before ACK and STB occurs before RD is permissible. (INTR = IBF
MASK
STB
RD + OBF
MASK
ACK
WR)
FIGURE 13. MODE 2 (BIDIRECTIONAL)
MODE 2 AND MODE 0 (INPUT)
MODE 2 AND MODE 0 (OUTPUT)
FIGURE 14. MODE 2 COMBINATIONS
tWOB
tAOB
tAK
tAD
tKD
tPH
tPS
tSIB
tST
OBF
WR
INTR
ACK
IBF
STB
PERIPHERAL
BUS
RD
tRIB
DATA FROM
PERIPHERAL TO 82C55A
DATA FROM
82C55A TO PERIPHERAL
DATA FROM
82C55A TO CPU
DATA FROM
CPU TO 82C55A
1
D7
1
D6 D5 D4 D3 D2 D1 D0
CONTROL WORD
PC7
8
STBA
PA7-PA0
OBFA
IBFA
PC5
PC2-PC0
3
RD
PC2-PC0
1 = INPUT
0 = OUTPUT
ACKA
PC6
INTRA
PC3
I/O
PC4
PB7-PB0
0
1
1/0
8
WR
1
D7
1
D6 D5 D4 D3 D2 D1 D0
CONTROL WORD
PC7
8
STBA
PA7-PA0
OBFA
IBFA
PC5
PC2-PC0
3
RD
PC2-PC0
1 = INPUT
0 = OUTPUT
ACKA
PC6
INTRA
PC3
I/O
PC4
PB7, PB0
0
0
1/0
8
WR
MS82C55A, MQ82C55A
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