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ST92F124 数据表(PDF) 145 Page - STMicroelectronics |
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ST92F124 数据表(HTML) 145 Page - STMicroelectronics |
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145 / 429 page ![]() 145/429 ST92F124/F150/F250 - EXTERNAL MEMORY INTERFACE (EXTMI) EXTERNAL MEMORY SIGNALS (Cont’d) Figure 76. External memory Read/Write with a programmable wait AS STRETCH DS STRETCH ADDRESS ADDRESS ADDRESS ADDRESS DATA IN DATA IN DATA OUT DATA T1 T2 T1 T2 TWA TWD NO WAIT CYCLE 1 AS WAIT CYCLE 1 DS WAIT CYCLE AS (MC=0) ALE (MC=1) DS (MC=0) P0 RW (MC=0) OEN (MC=1) WEN (MC=1) P0 RW (MC=0) OEN (MC=1) WEN (MC=1) ADDRESS ADDRESS TAVQV TAVWH TAVWL SYSTEM CLOCK (AS pin) (DS pin) (RW pin) (DS pin) (RW pin) P1, P9 9 |
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