PSD834F2-90J STMicroelectronics, PSD834F2-90J Datasheet - Page 46
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PSD834F2-90J
Manufacturer Part Number
PSD834F2-90J
Description
IC FLASH 2MBIT 90NS 52PLCC
Manufacturer
STMicroelectronics
Datasheet
1.PSD813F2VA-20JI.pdf
(109 pages)
Specifications of PSD834F2-90J
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
2M (256K x 8)
Speed
90ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-2006-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PSD834F2-90J
Manufacturer:
STMicroelectronics
Quantity:
10 000
Part Number:
PSD834F2-90J
Manufacturer:
WSI
Quantity:
20 000
Company:
Part Number:
PSD834F2-90JI
Manufacturer:
SANYO
Quantity:
120
Company:
Part Number:
PSD834F2-90JI
Manufacturer:
STMicroelectronics
Quantity:
10 000
Part Number:
PSD834F2-90JI
Manufacturer:
WSI
Quantity:
20 000
PSD813F2V, PSD854F2V
80C31
Figure
which has an 8-bit multiplexed address/data bus.
The lower address byte is multiplexed with the
data bus. The MCU control signals Program Se-
lect Enable (PSEN, CNTL2), Read Strobe (RD,
Figure 21. Interfacing the PSD with an 80C31
46/109
RESET
RESET
21
shows the bus interface for the 80C31,
12
13
14
15
19
18
31
2
3
4
5
6
7
8
9
1
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
ALE/P
PSEN
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
RXD
TXD
WR
RD
RESET
17
16
11
10
39
38
37
36
35
34
33
32
21
22
23
24
25
26
27
28
29
30
Doc ID 10552 Rev 3
RD
PSEN
A8
A9
A10
A11
A12
A13
A15
WR
ALE
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A14
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.
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
30
31
32
33
34
35
36
37
42
39
40
41
43
44
45
46
47
50
49
10
48
8
9
PSD
ADIO0
ADIO1
ADIO3
ADIO4
ADIO5
ADIO6
ADIO7
ADIO8
ADIO9
ADIO10
ADIO11
ADIO12
ADIO13
ADIO14
ADIO15
CNTL0 (WR)
CNTL1(RD)
CNTL2 (PSEN)
PD0-ALE
PD1
PD2
RESET
ADIO2
AD7-AD0
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
29
28
27
25
24
23
22
21
19
18
17
14
13
12
11
52
7
6
5
4
3
2
51
20
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