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MC68HC908AP16CFB Datasheet(PDF) 59 Page - Motorola, Inc |
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MC68HC908AP16CFB Datasheet(HTML) 59 Page - Motorola, Inc |
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59 / 440 page  FLASH Memory FLASH Mass Erase Operation MC68HC908AP Family — Rev. 2.5 Data Sheet MOTOROLA 59 4.5 FLASH Mass Erase Operation Use the following procedure to erase the entire FLASH memory: 1. Set both the ERASE bit and the MASS bit in the FLASH control register. 2. Write any data to any FLASH location within the FLASH memory address range. 3. Wait for a time, tnvs (5 µs). 4. Set the HVEN bit. 5. Wait for a time tme (200 ms). 6. Clear the ERASE bit. 7. Wait for a time, tnvh1 (100 µs). 8. Clear the HVEN bit. 9. After time, trcv (1 µs), the memory can be accessed in read mode again. NOTE: Programming and erasing of FLASH locations cannot be performed by code being executed from the FLASH memory. While these operations must be performed in the order as shown, but other unrelated operations may occur between the steps. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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