PSD813F1A-12J STMICROELECTRONICS [STMicroelectronics], PSD813F1A-12J Datasheet - Page 46
PSD813F1A-12J
Manufacturer Part Number
PSD813F1A-12J
Description
Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.PSD813F1A-12J.pdf
(110 pages)
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PSD813F1
PSD Interface to a Non-Multiplexed 8-Bit Bus
Figure
microcontroller 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
Figure 22. An Example of a Typical 8-bit Non-Multiplexed Bus Interface
46/110
22
RESET
MCU
shows an example of a system using a
BHE
ALE
WR
RD
A [ 15:0 ]
D [ 7:0 ]
PSD
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
A. Port A is in tri-state mode when the PSD is not
accessed by the microcontroller. Should the sys-
tem address bus exceed sixteen bits, Ports B, C,
or D may be used for additional address inputs.
PORT
PORT
PORT
A
B
C
D [ 7:0 ]
(OPTIONAL)
A [ 23:16 ]
AI02879C
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