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ACE25C200 Datasheet(PDF) 11 Page - ACE Technology Co., LTD. |
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ACE25C200 Datasheet(HTML) 11 Page - ACE Technology Co., LTD. |
11 / 32 page ACE25C200 2MB Serial Flash Memory VER 1.2 11 Dual SPI instructions Set Instruction Name Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Clock number (0-7) (8-15) (16-23) (24-31) (32-39) (40-47) Fast read dual output 3Bh A23-A16 A15-A8 A7-A0 dummy (D7- D0,…)(6) Fast read dual I/O BBh A23-A8 (5) A7-A0, M7-M0 (5) (D7- DO,…)(6) Notes: 1. Data bytes are shifted with Most Significant Bit first. Byte fields with data in parenthesis “( )” indicate data output from the device on 1 or 2 DQ pins. 2. The Status Register contents and Device ID will repeat continuously until CS# terminates the instruction. 3. At least one byte of data input is required for Page Program and Program Security Sectors, up to 256 bytes of data input. If more than 256 bytes of data are sent to the device, the addressing will wrap to the beginning of the page and overwrite previously sent data. 4. See Table 3 Manufacturer and Device Identification table for device ID information. 5. Dual SPI address input format: DQ0 = A22, A20, A18, A16, A14, A12, A10, A8 A6, A4, A2, A0, M6, M4, M2, M0 DQ1 = A23, A21, A19, A17, A15, A13, A11, A9 A7, A5, A3, A1, M7, M5, M3, M1 6. Dual SPI data output format: DQ0 = (D6, D4, D2, D0) DQ1 = (D7, D5, D3, D1) Write Enable (WREN) (06h) The Write Enable (WREN) instruction (Figure 5) sets the Write Enable Latch (WEL) bit in the Status Register to a 1. The WEL bit must be set prior to every Page Program, Sector Erase, Block Erase, Chip Erase, Write Status Register instruction. The Write Enable (WREN) instruction is entered by driving CS# low, shifting the instruction code “06h” into the Data Input (DI) pin on the rising edge of CLK, and then driving CS# high. Figure 5 Write enable instruction Write disable (WRDI) (04h) The Write Disable (WRDI) instruction (Figure 6) resets the Write Enable Latch (WEL) bit in the Status Register to a 0. The Write Disable (WRDI) instruction is entered by driving CS# low, shifting th e instruction code “04h” into the DI pin and then driving CS# high. Note that the WEL bit is automatically reset after Power-up and upon completion of the Write Status Register, Page Program, Sector Erase, Block Erase, Chip Erase instructions. |
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