ST92250V2TC 查看數據表（PDF） - STMicroelectronics

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ST92250V2TC

8/16-BIT SINGLE VOLTAGE FLASH MCU FAMILY WITH RAM, E³ ™ (EMULATED EEPROM), CAN 2.0B AND J1850 BLPD

STMicroelectronics 

ST92F124/F150/F250 - EXTERNAL MEMORY INTERFACE (EXTMI)

EXTERNAL MEMORY SIGNALS (Cont’d)

Figure 76. External memory Read/Write with a programmable wait

NO WAIT CYCLE

T1

T2

1 AS WAIT CYCLE

T1

TWA

1 DS WAIT CYCLE

T2

TWD

SYSTEM

CLOCK

AS (MC=0)

ALE (MC=1)

(AS pin)

P1, P9

ADDRESS

AS STRETCH

ADDRESS

DS STRETCH

TAVQV

DS (MC=0)

P0

ADDRESS

DATA IN

ADDRESS

DATA IN

RW (MC=0)

OEN (MC=1)

(DS pin)

WEN (MC=1)

(RW pin)

P0

ADDRESS

DATA OUT

RW (MC=0)

OEN (MC=1)

(DS pin)

WEN (MC=1)

(RW pin)

ADDRESS

DATA

TAVWH

TAVWL

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