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P25Q40H Datasheet(PDF) 58 Page - Puya Semiconductor Co., Ltd. |
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P25Q40H Datasheet(HTML) 58 Page - Puya Semiconductor Co., Ltd. |
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58 / 76 page  P25Q40H/20H/10H/05H Datasheet Puya Semiconductor Page 58 of 76 10.34 Program/Erase Suspend/Resume The Suspend instruction interrupts a Page Program, Sector Erase, or Block Erase operation to allow access to the memory array. After the program or erase operation has entered the suspended state, the memory array can be read except for the page being programmed or the sector or block being erased. Readable Area of Memory While a Program or Erase Operation is Suspended Suspended Operation Readable Region of Memory Array Page Program All but the Page being programmed Page Erase All but the Page being erased Sector Erase(4KB) All but the 4KB Sector being erased Block Erase(32KB) All but the 32KB Block being erased Block Erase(64KB) All but the 64KB Block being erased When the Serial NOR Flash receives the Suspend instruction, there is a latency of tPSL or tESL before the Write Enable Latch (WEL) bit clears to “0” and the SUS2 or SUS1 sets to “1”, after which the device is ready to accept one of the commands listed in "Table Acceptable Commands During Program/Erase Suspend after tPSL/tESL" (e.g. FAST READ). Refer to " AC Characteristics" for tPSL and tESL timings. "Table Acceptable Commands During Suspend (tPSL/tESL not required)" lists the commands for which the tPSL and tESL latencies do not apply. For example, RDSR, RDSCUR, RSTEN, and RST can be issued at any time after the Suspend instruction. Status Register bit 15 (SUS2) and bit 10 (SUS1) can be read to check the suspend status. The SUS2 (Program Suspend Bit) sets to “1” when a program operation is suspended. The SUS1 (Erase Suspend Bit) sets to “1” when an erase operation is suspended. The SUS2 or SUS1 clears to “0” when the program or erase operation is resumed. Acceptable Commands During Program/Erase Suspend after tPSL/tESL Command name Command Code Suspend Type Program Suspend Erase Suspend READ 03H • • FAST READ 0BH • • DREAD 3BH • • QREAD 6BH • • 2READ BBH • • 4READ EBH • • RDSFDP 5AH • • RDID 9FH • • REMS 90H • • DREMS 92H • • QREMS 94H • • RDSCUR 48H • • SBL 77H • • WREN 06H • RESUME 7AH OR 30H • • PP 02H • DPP A2H • QPP 32H • |
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