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M68ICS08GR 데이터시트(PDF) 160 Page - Freescale Semiconductor, Inc

부품명 M68ICS08GR
상세설명  M68HC08 Microcontrollers
PDF  408 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68ICS08GR 데이터시트(HTML) 160 Page - Freescale Semiconductor, Inc

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Flash Memory
Technical Data
MC68HC908GR8 — Rev 4.0
160
Flash Memory
MOTOROLA
PGM — Program Control Bit
This read/write bit configures the memory for program operation.
PGM is interlocked with the ERASE bit such that both bits cannot be
equal to 1 or set to 1 at the same time.
1 = Program operation selected
0 = Program operation unselected
11.5 FLASH Page Erase Operation
Use this step-by-step procedure to erase a page (64 bytes) of FLASH
memory to read as logic 1:
1. Set the ERASE bit, and clear the MASS bit in the FLASH control
register.
2. Read the FLASH block protect register.
3. Write any data to any FLASH address within the page address
range desired.
4. Wait for a time, tnvs (min. 10µs)
5. Set the HVEN bit.
6. Wait for a time, tErase (min. 1ms)
7. Clear the ERASE bit.
8. Wait for a time, tnvh (min. 5µs)
9. Clear the HVEN bit.
10. After a time, trcv (typ. 1µs), the memory can be accessed again in
read mode.
NOTE:
While these operations must be performed in the order shown, 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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