參數(shù)資料
型號: MC68HSC05K0DW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 145/154頁
文件大?。?/td> 1544K
代理商: MC68HSC05K0DW
Technical Data
MC68HC05K0 MC68HC05K1 — Rev. 2.0
90
Personality EPROM (MC68HC05K1 Only)
MOTOROLA
Technical Data
9.4 PEPROM Programming
Factory-provided software for programming the PEPROM is available
through the Motorola Web site at:
htt://mcu.motsps.com
The circuit shown in Figure 9-4 can be used to program the PEPROM
with the factory-provided programming software.
NOTE:
The personality EPROM cannot be erased in parts offered without the
windowed package.
To program the PEPROM, VDD must be greater than 4.5 Vdc.
The PEPROM also can be programmed by user software with VPP
applied to the IRQ/VPP pin. This sequence shows how to program each
PEPROM bit:
1. Select a PEPROM bit by writing to PEBSR.
2. Set the PEPGM bit in PESCR.
3. Wait 3 ms.
4. Clear the PEPGM bit.
NOTE:
While the PEPGM bit is set and VPP is applied to the IRQ/VPP pin, do not
access bits that are to be left unprogrammed (erased).
In the 3-pin RC oscillator configuration, the PEPROM cannot be
programmed by user software. If the voltage on IRQ/VPP is raised above
VDD, the oscillator will revert to a 2-pin oscillator configuration and
device operation will be disrupted. The 2-pin RC and crystal
configurations are not affected.
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