參數(shù)資料
型號: PSD4256G6V-10UIT
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 1M X 8 FLASH, 52 I/O, PIA-GENERAL PURPOSE, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 100/127頁
文件大?。?/td> 1091K
代理商: PSD4256G6V-10UIT
MCU bus interface
PSD4256G6V
18.11
8-bit MCU bus interface examples
Figure 26 to Figure 30 show examples of the basic connections between the PSD and some
popular MCUs. The PSD Control input pins are labeled as to the MCU function for which
they are configured. The MCU bus interface is specified using the PSDsoft Express
Configuration.
18.12
80C31
Figure 26 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 Select 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 26.
Interfacing the PSD with an 80C31
EA/VP
X1
X2
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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