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82C55 PDF预览

82C55

更新时间: 2024-11-22 22:23:51
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永盛 - Wing Shing /
页数 文件大小 规格书
25页 566K
描述
CMOS Programmable peripheral Interface

82C55 数据手册

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CMOS Programmable peripheral  
Interface  
WS82C55A  
Features  
Description  
The WS82C55A is a high performance CMOS version of  
the industry standard 8255A and is manufactured using a  
self-aligned silicon gate CMOS process (Scaled SAJI IV). It  
is a general purpose programmable I/O device which may be  
used with many different microprocessors. There are 24 I/O  
pins which may be individually programmed in 2 groups of  
12 and used in 3 major modes of operation. The high  
performance and industry standard configuration of the  
• Pin Compatible with NMOS 8255A  
• 24 Programmable I/O Pins  
• Fully TTL Compatible  
• High Speed, No “Wait State” Operation with 5MHz  
and 8MHz 80C88  
80C86  
• Direct Bit Set/Reset Capability  
WS82C55A  
make it compatible with the 80C86, and  
• Enhanced Control Word Read Capability  
• L7 Process  
other microprocessors.  
Static CMOS circuit design insures low operating power. TTL  
compatibility over the full military temperature range and bus  
hold circuitry eliminate the need for pull-up resistors. The  
advanced SAJI process results in performance equal  
to or greater than existing functionally equivalent products at  
a fraction of the power.  
• 2.5mA Drive Capability on All I/O Ports  
• Low Standby Power (ICCSB) . . . . . . . . . . . . . . . . .10µA  
Ordering Information  
TEMPERATURE  
SPEED  
5MHz  
5MHz  
SPEED  
PART NUMBERS  
PART NUMBERS  
WS82C55A-5P  
WS82C55A-5C  
WS82C55A-5Q  
PKG.  
RANGE  
0 C to 70oC  
o
40DIP  
8MHz  
8MHz  
8MHz  
WS82C55AP  
WS82C55AC  
o
o
44 PLCC  
44 QFP  
0 C to 70 C  
o
o
0 C to 70 C  
WS82C55AQ  
5MHz  
Pinouts  
1
2
40  
39  
38  
37  
36  
35  
34  
PA3  
PA2  
PA1  
PA0  
RD  
PA4  
PA5  
PA6  
PA7  
WR  
RESET  
D0  
6
5
4
3
2
1 44 43 42 41 40  
3
CS  
GND  
A1  
1
2
3
4
5
6
7
8
9
33 RESET  
32 D0  
4
CS  
GND  
A1  
A0  
PC7  
NC  
7
8
9
39  
38 D0  
37 D1  
RESET  
5
WS82C55A-5C  
WS82C55AC  
6
CS  
WS82C55A-5Q  
WS82C55AQ  
31 D1  
WS82C55A-5P  
10  
11  
12  
13  
14  
15  
16  
17  
D2  
D3  
NC  
D4  
D5  
D6  
D7  
V
36  
35  
34  
33  
32  
31  
30  
29  
7
GND  
A1  
A0  
30  
29  
28  
27  
26  
25  
24  
D2.  
D3  
D4  
D5  
D6  
D7  
VCC  
8
WS82C55AP 33  
D1  
PC7  
PC6  
PC5  
PC4  
PC0  
9
32  
31  
30  
29  
A0  
D2  
PC6  
PC5  
PC4  
PC0  
PC1  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
PC7  
PC6  
PC5  
PC4  
PC0  
PC1  
PC2  
PC3  
PB0  
PB1  
PB2  
D3  
PLCC-44  
D4  
QFP-44  
D5  
28  
DIP-40  
27  
D6  
CC  
D7  
18 1920 21 22 23 24 25 26 27 28  
PC1 10  
PC2 11  
26 V  
CC  
PB7  
23 PB7  
25  
24  
23  
22  
21  
PB6  
PB5  
PB4  
PB3  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
Wing Shing Computer Components Co., (H.K.)Ltd.  
Homepage: http://www.wingshing.com  
Tel:(852)2341 9276 Fax:(852)2797 8153  
E-mail: wsccltd@hkstar.com  

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