参数资料
型号: MC68HC05C8AFB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 91/166页
文件大小: 1914K
代理商: MC68HC05C8AFB
Memory
Technical Data
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A — Rev. 5.0
30
Memory
MOTOROLA
2.4 ROM Security Feature
Feature
A security(1) feature has been incorporated into the MC68HC05C8A to
help prevent externally reading of code in the ROM. This feature aids in
keeping customer developed software proprietary.
2.5 Random-Access Memory (RAM)
The user RAM consists of 176 bytes and is used both for general-
purpose RAM and stack area. The stack begins at address $00FF. The
stack pointer can access 64 bytes of RAM in the range $00FF to $00C0.
NOTE:
Using the stack area for data storage or temporary work locations
requires care to prevent it from being overwritten due to stacking from an
interrupt or subroutine call.
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the ROM difficult for unauthorized users.
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