PSD835G2 datasheet(52/102 Pages) STMICROELECTRONICS

부품명	PSD835G2

상세설명	Flash PSD, 5V Supply, for 8-bit MCUs 4 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM

PDF	102 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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PSD835G2

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PSD Interface to a Non-Multiplexed 8-Bit Bus

Figure 21 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 F. Port

F is in tri-state mode when the PSD is not access-

ed by the MCU. Should the system address bus

exceed sixteen bits, Ports A, B or C may be used

for additional address inputs.

MCU Bus Interface Examples

Figures 22 through 25 show examples of the basic

connections between the PSD and some popular

MCUs. The PSD Control input pins are labeled as

to the MCU function for which they are configured.

The MCU bus interface is specified using the PS-

Dsoft.

Figure 21. An Example of a Typical 8-bit Non-Multiplexed Bus Interface

MCU

BHE

ALE

RESET

D7-D0

A15-A0

A23-A16

D7-D0

ADIO

PORT

A, B

or C

WR (CNTRL0)

RD (CNTRL1)

BHE (CNTRL2)

RST

ALE (PD0)

PORT D

(OPTIONAL)

PSD

AI02879D

PSD835G2 데이터시트(PDF) 52 Page - STMicroelectronics