PSD4235G2V-10U STMICROELECTRONICS [STMicroelectronics], PSD4235G2V-10U Datasheet - Page 49

• Manufacturer Part Number: PSD4235G2V-10U
• Description: Flash In-System Programmable (ISP) Peripherals for 16-bit MCUs
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

PSD Interface to a Non-Multiplexed, 16-bit Bus
Figure 20 shows an example of a system using an
MCU with a 16-bit, non-multiplexed bus and a
PSD4256G6V. The address bus is connected to
the ADIO Port, and the data bus is connected to
Ports F and G. Ports F and G are in tri-state mode
Figure 20. An Example of a Typical Non-Multiplexed Bus Interface
Note: 1. D[15:8] is for 16-bit MCU
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
D [ 15:0 ]
A [ 15:0 ]
PSD
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
when the PSD is not accessed by the MCU.
Should the system address bus exceed sixteen
bit, Ports A, B, or C may be used for additional ad-
dress inputs.
PORT
PORT
PORT
G
F
A
( OPTIONAL )
D[15:8] 1
D [ 7:0 ]
A [ 23:16 ]
PSD4256G6V
AI04929B
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