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PSD835G2 Datasheet(PDF) 58 Page - STMicroelectronics

Part # PSD835G2
Description  Flash PSD, 5V Supply, for 8-bit MCUs 4 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
PDF  102 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PSD835G2 Datasheet(HTML) 58 Page - STMicroelectronics

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PSD835G2
58/102
68HC11
Figure 25 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 25. Interfacing the PSD with a 68HC11
XT
EX
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
PG0
PG1
PG2
PG3
PG4
PG5
PG6
PG7
PA0
PA2
PA1
PA3
PA4
PA5
PA6
PA7
ADIO0(2)
ADIO1
ADIO2
ADIO3
ADIO4
ADIO5
ADIO6
ADIO7
ADIO8
ADIO9
ADIO10
ADIO11
ADIO12
ADIO13
ADIO14
ADIO15
CNTL0 (R/W)
CNTL1(RD)
CNTL2 (E)
PD3
PD1 (CLKIN)
PD2 (CS)
RESET
AS
E
RESET
RESET
31
32
33
34
35
36
37
38
3
35
8
7
34
13
42
41
40
39
38
37
36
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
4
5
6
7
10
11
12
13
14
15
16
17
18
19
20
59
39
60
40
2
80
1
21
22
23
24
25
26
27
28
PSD
80C31
AD7-AD0
27
28
29
30
31
6
32
33
A8
A9
A10
A11
A12
A13
A14
A15
R/W
A[3:0]
RESET
51
52
53
54
55
56
57
58
AI02884D
CRYSTAL
A[15:8]
79
PD0 (AS)
PE2 (TDI)
PE0 (TMS)
PE1 (TCK/ST)
73
71
72
PE5 (TERR)
PE3 (TDO)
PE4 (TSTAT/RDY)
76
74
75
PE7 (VBATON)
PE6 (VSTBY)
78
77
VCC
VCC
VCC
VCC
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC2
PC1
PC3
PC4
PC5
PC6
PC7
61
62
63
64
65
66
67
68
41
42
43
44
45
46
47
48
A15-A8
GND GND GND GND GND
70
50
49
30
8
16
RESET
929
69
IRQ
XIRQ
14
15
R/W
9
10
11
12
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC2
PC1
PC3
PC4
PC5
PC6
PC7
PA0
PA2
PA1
PA3
PA4
PA5
PA6
PA7
19
18
PD0
PD2
PD1
PD3
PD4
PD5
49
50
43
44
45
46
47
48
21
22
23
24
25
20
PE2
PE0
PE1
PE5
PE3
PE4
PE7
PE6
VRH
VRL
52
51
MODB
MODA
2
3
5
4
E
AS



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