參數(shù)資料
型號: MSM82C55A-2RS
廠商: LAPIS SEMICONDUCTOR CO LTD
元件分類: 微控制器/微處理器
英文描述: 24 I/O, PIA-GENERAL PURPOSE, PDIP40
封裝: 0.600 INCH, 2.54 MM PITCH, PLASTIC, DIP-40
文件頁數(shù): 8/27頁
文件大小: 207K
代理商: MSM82C55A-2RS
15/26
Semiconductor
MSM82C55A-2RS/GS/VJS
Port C Function Allocation in Mode 1
PC0
PC2
PC3
Combination of
Input/Output
Group A: Input
Group B: Input
PC1
Port C
Group A: Input
Group B: Output
Group A: Output
Group B: Input
Group A: Output
Group B: Output
INTRB
PC4
PC6
PC7
PC5
IBFB
OBFB
IBFB
OBFB
STBB
ACKB
STBB
ACKB
INTRA
STBA
I/O
IBFA
I/O
ACKA
I/O
OBFA
Note: I/O is a bit not used as the control signal, but it is available as a port of mode 0.
Examples of the relation between the control words and pins when used in mode 1 are
shown below:
(a) When group A is mode 1 output and group B is mode 1 input.
1
1/0
0
1
0
1
D7
D6
D5
D4
D3
D2
D1
D0
As all of PC0 - PC3 bits
become a control pin
in this case, this bit is
"Don't Care".
Control Word
Selection of I/O
of PC4 and PC5
when not defined
as a control pin.
OBFA
ACKA
INTRA
I/O
PC7
PC6
PC3
PC4, PC5
PA7 - PA0
8
RD
Group A: Mode 1 Output
Group B: Mode 1 Input
STBB
IBFB
INTRB
PC2
PC1
PC0
PB7 - PB0
8
WR
2
1 = Input
0 = Output
相關(guān)PDF資料
PDF描述
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MSM82C84A-2GS-K 8 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO24
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