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PF38F5070MCP0B 数据表(PDF) 60 Page - Numonyx B.V |
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PF38F5070MCP0B 数据表(HTML) 60 Page - Numonyx B.V |
60 / 102 page Numonyx™ Wireless Flash Memory (W18) Datasheet November 2007 60 Order Number: 290701-18 Numonyx™ Wireless Flash Memory (W18) 11.2 Factory Programming The standard factory programming mode uses the same commands and algorithm as the Word Program mode (40h/10h). When VPP is at VPP1, program and erase currents are drawn through VCC. If VPP is driven by a logic signal, VPP1 must remain above the VPP1Min value to perform in-system flash modifications. When VPP is connected to a 12 V power supply, the device draws program and erase current directly from VPP. This eliminates the need for an external switching transistor to control the VPP voltage. Figure 35, “Examples of VPP Power Supply Configurations” on page 77 shows examples of flash power supply usage in various configurations. Figure 26: Word Program Flowchart Suspend Program Loop Start Write 40h, Word Address Write Data Word Address Read Status Register SR[7] = Full Program Status Check (if desired) Program Complete FULL PROGRAM STATUS CHECK PROCEDURE Suspend Program Read Status Register Program Successful SR[3] = SR[1] = 0 0 SR[4] = 0 1 1 1 1 0 No Yes V PP Range Error Device Protect Error Program Error WORD PROGRAM PROCEDURE SR[3] MUST be cleared before the WSM will allow further program attempts Only the Clear Staus Register command clears SR[4:3,1]. If an error is detected, clear the status register before attempting a program retry or other error recovery. Standby Standby Bus Operation Command Check SR[3] 1 = V PP error Check SR[4] 1 = Data program error Comments Repeat for subsequent programming operations. Full status register check can be done after each program or after a sequence of program operations. Comments Bus Operation Command Data = 40h Addr = Location to program (WA) Write Program Setup Data = Data to program (WD) Addr = Location to program (WA) Write Data Read SRD Toggle CE# or OE# to update SRD Read Check SR[7] 1 = WSM ready 0 = WSM busy Standby Standby Check SR[1] 1 = Attempted program to locked block Program aborted |
类似零件编号 - PF38F5070MCP0B |
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类似说明 - PF38F5070MCP0B |
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