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SC312XDP512F0MPVR датащи(PDF) 1055 Page - Freescale Semiconductor, Inc |
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SC312XDP512F0MPVR датащи(HTML) 1055 Page - Freescale Semiconductor, Inc |
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1055 / 1348 page ![]() Chapter 25 2 Kbyte EEPROM Module (S12XEETX2KV1) MC9S12XDP512 Data Sheet, Rev. 2.21 Freescale Semiconductor 1057 Figure 25-18. Example Erase Verify Command Flow Write: EEPROM Address Write: ECMD register Erase Verify Command 0x05 Write: ESTAT register Clear CBEIF 0x80 1. 2. 3. Clear ACCERR/PVIOL 0x30 Write: ESTAT register yes no Access Error and Protection Violation no and Dummy Data Bit Polling for Command Completion Check Read: ESTAT register yes NOTE: command write sequence aborted by writing 0x00 to ESTAT register. NOTE: command write sequence aborted by writing 0x00 to ESTAT register. Read: ESTAT register no START yes Check CBEIF Set? Address, Data, Command Buffer Empty Check CCIF Set? ACCERR/ PVIOL Set? no Erase Verify Status yes EXIT EEPROM Memory Not Erased EXIT EEPROM Memory Erased BLANK Set? Write: ECLKDIV register Read: ECLKDIV register yes no Clock Register Written Check EDIVLD Set? NOTE: ECLKDIV needs to be set once after each reset. |
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