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PSD834F2V Datasheet(PDF) 38 Page - STMicroelectronics

Part # PSD834F2V
Description  Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM
PDF  89 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PSD834F2V Datasheet(HTML) 38 Page - STMicroelectronics

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Figure 16. An Example of a Typical 8-bit Multiplexed Bus Interface
PSD Interface to a Non-Multiplexed 8-Bit Bus.
Figure 17 shows an example of a system using a
MCU with an 8-bit non-multiplexed bus and a
PSD. The address bus is connected to the ADIO
Port, and the data bus is connected to Port A. Port
A is in tri-state mode when the PSD is not access-
ed by the MCU. Should the system address bus
exceed sixteen bits, Ports B, C, or D may be used
for additional address inputs.
MCU
WR
RD
BHE
ALE
RESET
AD [ 7:0]
A[ 15:8]
A[ 15: 8]
A[ 7: 0]
ADIO
PORT
PORT
A
PORT
B
PORT
C
WR (CNTRL0)
RD (CNTRL1)
BHE (CNTRL2)
RST
ALE (PD0)
PORT D
(OPTIONAL)
(OPTIONAL)
PSD
AI02878C



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