参数资料
型号: MC68HSC05K0P
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDIP16
封装: PLASTIC, DIP-16
文件页数: 147/154页
文件大小: 1544K
代理商: MC68HSC05K0P
Technical Data
MC68HC05K0 MC68HC05K1 — Rev. 2.0
92
Personality EPROM (MC68HC05K1 Only)
MOTOROLA
Technical Data
9.5 PEPROM Reading
This sequence shows how to read the PEPROM:
1. Select a bit by writing to PEBSR.
2. Read the PEDATA bit in PESCR.
3. Store the PEDATA bit in RAM or in a register.
4. Select another bit by changing PEBSR.
5. Continue reading and storing the PEDATA bits until the required
personality EPROM data is stored.
Reading the PEPROM is easiest when each PEPROM column contains
one byte. Selecting a row-0 bit selects the first bit, and incrementing the
PEPROM bit select register (PEBSR) selects the next row-1 bit from the
same column. Incrementing PEBSR seven more times selects the
remaining bits of the column and selects the row-0 bit of the next column,
setting the row-0 flag, PEPRZF.
A PEPROM byte that has been read can be transferred to the
personality EPROM bit select register (PEBSR) so that subsequent
reads of the PEBSR quickly yield that PEPROM byte.
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