PSD4235G2-90UI STMicroelectronics, PSD4235G2-90UI Datasheet - Page 76

• Manufacturer Part Number: PSD4235G2-90UI
• Description: IC FLASH 4MBIT 90NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD4235G2-90UI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 4M (512K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1969

MCU bus interface
19.8
Figure 23. Interfacing the PSD with an H83/2350
76/129
H8/300
Figure 23
address bus. The H8 data bus is connected to Port F (D0-D7) and Port G (D8-D15).
The WRH signal is connected to PD3, and WHL is connected to CNTL0. The RD signal is
connected to CNTL1. The connection to the Address Strobe (AS) signal is optional, and is
required if the addresses are to be latched.
U3
CRYSTAL
RESET\
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
113
114
115
34
35
36
37
39
40
41
42
43
44
45
46
48
49
50
51
78
77
29
30
31
32
55
53
57
56
54
58
90
89
91
88
87
86
74
71
70
69
68
67
66
65
64
60
61
62
63
80
H8S/2655
PE0/D0
PE0/D1
PE0/D2
PE0/D3
PE0/D4
PE0/D5
PE0/D6
PE0/D7
PD0/D8
PD1/D9
PD2/D10
PD3/D11
PD4/D12
PD5/D13
PD6/D14
PD7/D15
EXTAL
XTAL
CS7/IRQ3
CS6/IRQ2
IRQ1
IRQ0
RXD0
TXD0
SCK0
RXD1
TXD1
SCK1
RXD2
TXD2
SCK2
PF0/BREQ
PF1/BACK
PF2/LCAS/WAIT/B
NMI
PO0/TIOCA3
PO1/TIOCB3
PO2/TIOCC3/TMRI
PO3/TIOCD3/TMCI
PO4/TIOCA4/TMRI
PO5/TIOCB4/TMRC
PO6/TIOCA5/TMRO
PO7/TIOCB5/TMRO
DREQ/CS4
TEND0/CS5
DREQ1
TEND1
MOD0
MOD1
MOD2
PF0/PHI0
shows an Hitachi H8/2350 with a 16-bit non-multiplexed data bus, and a 24-bit
PO8/TIOCA0/DACK
PO9/TIOCB0/DACK
PO10/TIOCC0/TCL
PO11/TIOCD0/TCL
PO13/TIOCB1/TCL
PO15/TIOCB2/TCL
PO12/TIOCA1
PO14/TIOCA2
PA4/A20/IRQ4
PA5/A21/IRQ5
PA6/A22/IRQ6
PA7/A23/IRQ7
PG0/CAS/OE
WDTOVF
PG1/CS3
PG2/CS2
PG3/CS1
PG4/CS0
AN6/DA0
AN7/DA1
PB2/A10
PB3/A11
PB4/A12
PB5/A13
PB6/A14
PB7/A15
PA0/A16
PA1/A17
PA2/A18
PA3/A19
PC0/A0
PC1/A1
PC2/A2
PC3/A3
PC4/A4
PC5/A5
PC6/A6
PC7/A7
RESET
ADTRG
PB0/A8
PB1/A9
STBY
HWR
LWR
AN0
AN1
AN2
AN3
AN4
AN5
RD
AS
2
3
4
5
7
8
9
10
11
12
13
14
16
17
18
19
20
21
22
23
25
26
27
28
85
83
82
84
73
72
75
112
111
110
109
108
107
106
105
95
96
97
98
99
100
101
102
92
116
117
118
119
120
A16
A17
A18
A19
A20
A21
A22
A23
RESET\
WRL\
RD\
AS
WRH\
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
10
11
12
13
14
15
16
17
18
19
20
59
60
40
79
80
39
71
72
73
74
75
76
77
78
3
4
5
6
7
1
2
PSD
ADIO0
ADIO1
ADIO2
ADIO3
ADIO4
ADIO5
ADIO6
ADIO7
ADIO8
ADIO9
ADIO10
ADIO11
ADIO12
ADIO13
ADIO14
ADIO15
CNTL0(WRL)
CNTL1(RD)
CNTL2
PD0 (AS)
PD1 (CLKIN)
PD2 (CSI)
PD3 (WRH)
RESET
PE0 (TMS)
PE1 (TCK/ST)
PE2 (TDI)
PE3 (TDO)
PE4 (TSTAT/RDY)
PE5 (TERR)
PE6
PE7
VCC_BAR
PG0
PG1
PG2
PG3
PG4
PG5
PG6
PG7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
D[15:0]
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
A[23:0]
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
31
32
33
34
35
36
37
38
21
22
23
24
25
26
27
28
51
52
53
54
55
56
57
58
61
62
63
64
65
66
67
68
41
42
43
44
45
46
47
48
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
A16
A17
A18
A19
PSD4235G2
AI04953c
D[15:0]
A[23:0]