PSD854F2V-90J STMicroelectronics, PSD854F2V-90J Datasheet - Page 44
PSD854F2V-90J
Manufacturer Part Number
PSD854F2V-90J
Description
IC FLASH 2MBIT 90NS 52PLCC
Manufacturer
STMicroelectronics
Datasheet
1.PSD813F2VA-20JI.pdf
(109 pages)
Specifications of PSD854F2V-90J
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
2M (256K x 8)
Speed
90ns
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-2033-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PSD854F2V-90J
Manufacturer:
SEMTECH
Quantity:
2 185
Company:
Part Number:
PSD854F2V-90J
Manufacturer:
STMicroelectronics
Quantity:
10 000
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PSD813F2V, PSD854F2V
PSD Interface to a Multiplexed 8-Bit Bus
Figure
MCU with an 8-bit multiplexed bus and a PSD. The
ADIO port on the PSD is connected directly to the
MCU address/data bus. Address Strobe (ALE/AS,
PD0) latches the address signals internally.
Latched addresses can be brought out to Port A or
Figure 19. An Example of a Typical 8-bit Multiplexed Bus Interface
44/109
19
RESET
MCU
shows an example of a system using a
BHE
ALE
WR
RD
AD [ 7:0 ]
A [ 15:8 ]
Doc ID 10552 Rev 3
B. The PSD drives the ADIO data bus only when
one of its internal resources is accessed and Read
Strobe (RD, CNTL1) is active. Should the system
address bus exceed sixteen bits, Ports A, B, C, or
D may be used as additional address inputs.
PSD
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
PORT
PORT
PORT
A
B
C
( OPTIONAL )
( OPTIONAL )
A [ 7: 0 ]
A [ 15: 8 ]
AI02878C
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