st92f124 STMicroelectronics, st92f124 Datasheet - Page 144

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

ST92F124/F150/F250 - EXTERNAL MEMORY INTERFACE (EXTMI)
EXTERNAL MEMORY SIGNALS (Cont’d)
Figure 76. External memory Read/Write with a programmable wait
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9
SYSTEM
CLOCK
AS (MC=0)
ALE (MC=1)
(AS pin)
P1, P9
DS (MC=0)
P0
RW (MC=0)
OEN (MC=1)
(DS pin)
WEN (MC=1)
(RW pin)
P0
RW (MC=0)
OEN (MC=1)
(DS pin)
WEN (MC=1)
(RW pin)
ADDRESS
T1
ADDRESS
NO WAIT CYCLE
ADDRESS
DATA IN
T2
DATA OUT
AS STRETCH
1 AS WAIT CYCLE
ADDRESS
ADDRESS
ADDRESS
TWA
T1
TAVWL
DS STRETCH
1 DS WAIT CYCLE
TAVQV
TAVWH
DATA
TWD
T2
DATA IN