参数资料
型号: MC68HC05RC8P
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, PDIP28
封装: PLASTIC, DIP-28
文件页数: 48/122页
文件大小: 445K
代理商: MC68HC05RC8P
Memory
Input/Output Programming
MC68HC05RC16 — Rev. 3.0
General Release Specification
MOTOROLA
Memory
31
2.3.3 RAM
The user RAM consists of 352 bytes of a shared stack area. The RAM
starts at address $0020 and ends at address $017F. 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.
2.4 Input/Output Programming
In user mode, 20 lines (28-pin PDIP or 28-pin SOIC) or 24 lines (44-lead
PLCC) are arranged as three 8-bit I/O ports. These ports are
programmable as either inputs or outputs under software control of the
data direction registers. For detailed information, refer to Section 7.
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