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M58LW064B150NH6T Datasheet(PDF) 8 Page - STMicroelectronics |
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M58LW064B150NH6T Datasheet(HTML) 8 Page - STMicroelectronics |
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8 / 53 page  M58LW064A, M58LW064B 8/53 BUS OPERATIONS The following operations can be performed using the appropriate bus configuration: Asynchronous – Read Array – Read Electronic Signature – Read Block Protection – Read Status Register – Read Query – Write – Output Disable – Standby – Reset/Power-down Synchronous – Address Latch – Burst Read – Burst Read Suspend – Burst Read Interrupt – Burst Read Resume – Burst Address Advance See Tables 3, 4, 5, 6 and 7. COMMAND INTERFACE Instructions, made up of Commands written in Cy- cles, can be given to the Program/Erase Controller (P/E.C.) by writing to the Command Interface (C.I.). At power-up or on exit from power down or if VDD is lower than VLKO, the Command Interface is reset to Read Array. Any incorrect command will reset the device to Read Array. Any improper com- mand sequence will cause the Status Register to report the error condition and the device will de- fault to Read Status Register. The internal Program/Erase Controller (P/E.C.) automatically handles all timing and verification of the Program and Erase operations. The Status Register information P/ECS on DQ7 can be read at any time, during programming or erase, to mon- itor the progress of the operation. Table 3. Asynchronous Bus Operations (1) Note: 1. X = Don’t Care VIL or VIH. High = VIH or VHH. 2. ? = need to check with designers - X or VIL??? Operation E G W RP L DQ0-DQ31 Read Array VIL VIL VIH High X Data Output Read Electronic Signature or Block Protection Status VIL VIL VIH High X Manufacturer or Device Code Output Block Protection Status Read Status P/E.C. Active VIL VIL VIH High X Status Register Output Read Query VIL VIL VIH High X CFI Query Output Write VIL VIH VIL High VIL Data Input Output Disable VIL VIH VIH High X High Z Standby VIH X X High X High Z Reset/Power-down X X X VIL X High Z |
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