PSD4235G2V-10U STMICROELECTRONICS [STMicroelectronics], PSD4235G2V-10U Datasheet - Page 48
PSD4235G2V-10U
Manufacturer Part Number
PSD4235G2V-10U
Description
Flash In-System Programmable (ISP) Peripherals for 16-bit MCUs
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.PSD4235G2V-10U.pdf
(100 pages)
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PSD4256G6V
PSD Interface to a Multiplexed Bus
Figure 19 shows an example of a system using an
MCU with a multiplexed bus and a PSD4256G6V.
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 E, F
Figure 19. An Example of a Typical Multiplexed Bus Interface
Note: 1. AD[15:8] is for 16-bit MCU
48/100
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
RESET
MCU
BHE
ALE
WR
RD
AD[15:8] 1
AD [ 7:0 ]
or A[15:8]
or G. 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 F may be used as additional address in-
puts.
PSD
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
PORT
PORT
PORT
G
A
F
( OPTIONAL )
( OPTIONAL )
( OPTIONAL )
A [ 23:16 ]
A [ 7: 0 ]
A [ 15: 8 ]
AI04928B
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