参数资料
型号: MC68HC705J1ACP
厂商: Freescale Semiconductor
文件页数: 143/162页
文件大小: 0K
描述: IC MCU 4MHZ 1.2K OTP 20-DIP
标准包装: 18
系列: HC05
核心处理器: HC05
芯体尺寸: 8-位
速度: 4MHz
外围设备: POR,WDT
输入/输出数: 14
程序存储器容量: 1.2KB(1.2K x 8)
程序存储器类型: OTP
RAM 容量: 64 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-DIP(0.300",7.62mm)
包装: 管件
Low-Power Modes
Effects of Stop and Wait Modes
MC68HC705J1A — Rev. 4.0
Technical Data
Low-Power Modes
COP watchdog reset — A timeout of the COP watchdog resets the
MCU, starts the CPU clock, and loads the program counter with
the contents of locations $07FE and $07FF. Software can enable
timer interrupts so that the MCU periodically can exit wait mode to
reset the COP watchdog.
Timer interrupt — Real-time interrupt requests and timer overflow
interrupt requests start the MCU clock and load the program
counter with the contents of locations $07F8 and $07F9.
5.4 Effects of Stop and Wait Modes
The STOP and WAIT instructions have the effects described in this
subsection on MCU modules.
5.4.1 Clock Generation
The STOP instruction:
The STOP instruction disables the internal oscillator, stopping the
CPU clock and all peripheral clocks.
After exiting stop mode, the CPU clock and all enabled peripheral
clocks begin running after the oscillator stabilization delay.
NOTE:
The oscillator stabilization delay holds the MCU in reset for the first 4064
internal clock cycles.
The WAIT instruction:
The WAIT instruction disables the CPU clock.
After exiting wait mode, the CPU clock and all enabled peripheral
clocks immediately begin running.
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For More Information On This Product,
Go to: www.freescale.com
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