參數(shù)資料
型號(hào): NTE6821
廠商: NTE Electronics, Inc.
英文描述: Integrated Circuit Peripheral Interface Adapter (PIA), NMOS, 1MHz
中文描述: 集成電路外設(shè)接口適配器(PIA)的,NMOS管,1MHz的
文件頁(yè)數(shù): 4/5頁(yè)
文件大小: 45K
代理商: NTE6821
R/W
CS2
CS0
RESET
D0
IRQB
RS0
IRQA
Expanded Block Diagram
Pin Connection Diagram
IRQA
38
D0
D1
D2
D3
D4
D5
D6
D7
33
32
31
30
29
28
27
26
V
CC
=
V
SS
=
PIN20
PIN1
CS0
CS1
CS2
RS0
RS1
R/W
22
24
23
36
35
21
25
34
Data Bus
Buffers
(DBB)
Bus Input
Register
(BIR)
Chip
Select
and
R/W
Control
IRQB
37
Control
Register A
(CRA)
Enable
Reset
Output
Register A
(ORA)
Output
Register B
(ORB)
Control
Register B
(CRB)
Output Bus
I
Interrupt Status
Control A
Interrupt Status
Control B
Data Direction
Register A
(DDRA)
Data Direction
Register B
(DDRB)
Peripheral
Interface
A
Peripheral
Interface
B
40
CA1
39
CA2
2
3
4
5
6
7
8
9
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
10
11
12
13
14
15
16
17
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
18
CB1
19
CB2
V
CC
V
SS
PA0
PA4
PA5
PA2
PA3
PA6
PA7
PB0
D2
D3
PB1
PB2
PB3
CS1
E
D7
D6
D5
D4
D1
RS1
CA2
PA1
PB7
1
2
3
4
5
6
7
8
9
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
10
11
12
13
14
15
16
17
18
19
20
PB4
PB5
PB6
CB1
CB2
CA1
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