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PSD813F2 数据表(PDF) 46 Page - STMicroelectronics

部件名 PSD813F2
功能描述  Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
PDF  110 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

PSD813F2 数据表(HTML) 46 Page - STMicroelectronics

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PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
46/110
80C31
Figure 21 shows the bus interface for the 80C31,
which has an 8-bit multiplexed address/data bus.
The lower address byte is multiplexed with the
data bus. The MCU control signals Program Se-
lect Enable (PSEN, CNTL2), Read Strobe (RD,
CNTL1), and Write Strobe (WR, CNTL0) may be
used for accessing the internal memory and I/O
Ports blocks. Address Strobe (ALE/AS, PD0)
latches the address.
Figure 21. Interfacing the PSD with an 80C31
EA/VP
X1
X2
RESET
RESET
INT0
INT1
T0
T1
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC2
PC1
PC3
PC4
PC5
PC6
PC7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
ADIO0
ADIO1
ADIO2
ADIO3
ADIO4
ADIO5
ADIO6
ADIO7
ADIO8
ADIO9
ADIO10
ADIO11
ADIO12
ADIO13
ADIO14
ADIO15
CNTL0 (WR)
CNTL1(RD)
CNTL2 (PSEN)
PD0-ALE
PD1
PD2
RESET
RD
WR
PSEN
ALE/P
TXD
RXD
RESET
29
28
27
25
24
23
22
21
30
39
31
19
18
9
12
13
14
15
1
2
3
4
5
6
7
8
38
37
36
35
34
33
32
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
31
32
33
34
35
36
37
39
40
41
42
43
44
45
46
47
48
50
49
10
9
8
7
6
5
4
3
2
52
51
PSD
80C31
AD7-AD0
AD[ 7:0]
21
22
23
24
25
26
27
28
17
16
29
30
A8
A9
A10
A11
A12
A13
A14
A15
RD
WR
PSEN
ALE
11
10
RESET
20
19
18
17
14
13
12
11
AI02880C



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