參數(shù)資料
型號: MC68HC05C12ACFN
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 76/156頁
文件大?。?/td> 3848K
代理商: MC68HC05C12ACFN
NON-DISCLOSURE
AGREEMENT
REQUIRED
Memory
General Release Specification
MC68HC05C12A Rev. 3.0
Memory
2.4 ROM Security Feature
A security1 feature has been incorporated into the MC68HC05C12A to
help prevent externally reading of code in the ROM. This feature aids in
keeping customer developed software proprietary.
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the ROM difficult for unauthorized users.
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.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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