PSD4235G2V-12UI STMicroelectronics, PSD4235G2V-12UI Datasheet - Page 73

• Manufacturer Part Number: PSD4235G2V-12UI
• Description: IC FLASH 4MBIT 120NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD4235G2V-12UI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 4M (512K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Number Of Macrocells: 24
• Maximum Operating Frequency: 25.6 MHz
• Delay Time: 90 ns
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1970

PSD4235G2
19.5
Figure 20. Interfacing the PSD with an 80C196
RESET
57
56
55
54
53
52
51
50
32
49
48
44
45
46
47
58
59
60
61
62
63
64
65
36
37
38
39
40
41
42
43
19
18
80C196 and 80C186
In
shown connected to a PSD4235G2. The Read Strobe (RD, CNTL1), and Write Strobe
(WR/WRL, CNTL0) signals are connected to the CNTL pins. When BHE is not used, the
PSD can be configured to receive WRL and Write Enable high-byte (WRH/DBE, PD3) from
the MCU. higher address inputs (A16-A19) can be routed to Ports A, B, or C as input ot the
PLD.
The AMD 80186 family has the same bus connection to the PSD as the 80C196.
6
80C196NT
Figure
NMI
VREF
VPP
ANGND
ACH4/P0.4/PMD.0
ACH5/P0.5/PMD.1
ACH6/P0.6/PMD.2
ACH7/P0.7/PMD.3
P6.0/EPA8
P6.1/EPA9
P6.2/T1CLK
P6.3/T1DIR
P6.4/SC0
P6.5/SD0
P6.6/SC1
P6.7/SD1
P2.0/TX/PVR
P2.1/RXD/PALE
P2.2/EXINT/PROG
P2.3/INTB
P2.4/INTINTOUT
P2.5/HLD
P2.6/HLDA/CPVER
P2.7/CLKOUT/PAC
P1.0/EPA0/T2CLK
P1.1/EPA1
P1.2/EPA2/T2DIR
P1.3/EPA3
P1.4/EPA4
P1.5/EPA5
P1.6/EPA6
P1.7/EPA7
X1
X2
20, the Intel 80C196 MCU, which has a 16-bit multiplexed address/data bus, is
BUSWIDTH/P5.7
BHE/WRH/P5.5
WR/WRL/P5.2
ALE/ADV/P5.0
SLPINT/P5.4
READY/P5.6
P4.2/AD10
P4.3/AD11
P4.4/AD12
P4.5/AD13
P4.6/AD14
P4.7/AD15
INST/P5.1
P3.0/AD0
P3.1/AD1
P3.2/AD2
P3.3/AD3
P3.4/AD4
P3.5/AD5
P3.6/AD6
P3.7/AD7
P4.0/AD8
P4.1/AD9
EP.0/A16
EP.1/A17
EP.2/A18
EP.3/A19
RD/P5.3
RESET
EA
3
4
5
6
7
10
11
12
13
14
15
16
17
18
19
20
14
13
12
11
9
7
8
4
33
31
10
3
1
2
A16
A17
A18
A19
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
RD
BHE
ALE
RESET
WR
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 (WR)
CNTL1 (RD)
CNTL2 (BHE)
PD0 (ALE)
PD1 (CLKIN)
PD2 (CSI)
PD3 (WRH)
RESET
PE0 (TMS)
PE1 (TCK/ST)
PE2 (TDI)
PE3 (TDO)
PE4 (TSTAT/RDY)
PE5 (TERR)
PE6
PE7
GND
A19-A16
AD15-AD0
8
GND
VCC
30 49 50 70
GND
9
GND
VCC
VCC
29
GND
VCC
PG0
PG1
PG2
PG3
PG4
PG5
PG6
PG7
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
69
MCU bus interface
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
A16
A17
A18
A19
A [ 19:16 ]
AI04930b
AD [ 15:0 ]
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