參數(shù)資料
型號: MC68HC05C0P
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 4 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數(shù): 13/96頁
文件大小: 357K
代理商: MC68HC05C0P
Section 2: Memory
MOTOROLA
Page 11
MC68HC05C0 Specification Rev. 1.2
2.1
EXTERNAL MAPPING EXCEPTIONS
In the first 28 bytes of the Memory Map, most of the addresses are mapped internal as on-
chip peripheral registers. However, addresses $00 and $04 are mapped external, so that
an external Port Replacement Unit may be used for Port A. In Non-Muxed mode Port D
addresses $03 and $07 are mapped external, because the Port D pins are used as the
lower-order address bus.
2.2
RAM
The user RAM consists of 512 bytes from location $0040 to $0240 including the stack area.
The stack begins at address $00FF. The stack pointer can access 64 bytes of RAM in the
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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