ST92F124JDV2TC 데이터 시트보기 (PDF) - STMicroelectronics

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ST92F124JDV2TC

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 77. Effects of DS2EN on the behavior of DS and DS2

n

NO WAIT CYCLE

T1

T2

1 DS WAIT CYCLE

T1

T2

SYSTEM

CLOCK

AS (MC=0)

DS STRETCH

ALE (MC=1)

DS2EN=0 OR (DS2EN=1 AND UPPER MEMORY ADDRESSED):

DS

(MC=0)

DS2

(MC=0)

OEN

(MC=1, READ)

OEN

(MC=1, WRITE)

OEN2

(MC=1)

DS2EN=1 AND LOWER MEMORY ADDRESSED:

DS

(MC=0)

DS2

(MC=0)

OEN

(MC=1)

OEN2

(MC=1, READ)

OEN2

(MC=1, WRITE)

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