PSD834F4A-20UI View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
PSD834F4A-20UI Datasheet PDF : 128 Pages
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MCU bus interface
PSD8XXFX
15.8
68HC11
Figure 24 shows a bus interface to a 68HC11 where the PSD is configured in 8-bit
multiplexed mode with E and R/W settings. The DPLD can be used to generate the READ
and WR signals for external devices.
Figure 24. Interfacing the PSD with a 68HC11
AD7-AD0
AD7-AD0
PSD
68HC11
RESET
8
XT
7
EX
17
19
18
RESET
IRQ
XIRQ
2
MODB
34
33
32
PA0
PA1
PA2
31
PA3
PA4
PA5
PA6
30
29
28
PA7 27
42
PB0
PB1
PB2
41
40
PB3
PB4
PB5
PB6
PB7
39
38
37
36
35
9 AD0
43
44
45
46
PE0
PE1
PE2
47 PE3
48 PE4
49
- 50
PE5
PE6
PE7
) 52
Obsolete Product(s 51
VRH
VRL
PC0 10
PC1 11
PC2
PC3
12
13
PC4
PC5
PC6
PC7
14
15
16
PD0
PD1
PD2
PD3
20
21
22
23
24
PD4
PD5
25
3
MODA
5
E
4
AS
6
R/W
AD1
AD2
AD3
AD4
AD5
AD6
AD7
E
AS
R/W
RESET
AD0
30
AD1
31
AD2
32
AD3
33
AD4
34
AD5
35
AD6
36
AD7
37
A8
39
A9
40
A10
41
A11
42
A12
43
A13
44
A14
45
te A15
46
ole 47
50
Obs 49
10
9
8
48
Product(s) ADIO0
ADIO1
ADIO2
ADIO3
AD104
AD105
ADIO6
ADIO7
ADIO8
ADIO9
ADIO10
ADIO11
AD1012
29
PA0
PA1
PA2
28
27
PA3
PA4
PA5
PA6
PA7
25
24
23
22
21
PB0
PB1
PB2
PB3
PB4
7
6
5
4
3
2
AD1013
ADIO14
ADIO15
PB5
PB6
PB7
52
51
CNTL0 (R_W)
CNTL1(E)
CNTL 2
PD0 – AS
PD1
PD2
PC0
PC1
PC2
PC3
PC4
20
19
18
17
14
13
PC5
PC6
12
11
PC7
RESET
AI02884C
66/128
Doc ID 7833 Rev 7
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