參數(shù)資料
型號: MC68HC705JJ7CDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝: SOIC-20
文件頁數(shù): 112/164頁
文件大小: 1165K
代理商: MC68HC705JJ7CDW
Low-Power Modes
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
51
Figure 6-2. Stop/Wait/Halt Flowchart
STOP
SWAIT BIT
IN MOR SET?
CLEAR I BIT IN CCR.
SET IRQE BIT IN ISCR.
CLEAR CTOF, RTIF, CTOFE, AND RTIE BITS IN TSCR.
DISABLE EXTERNAL PIN OSCILLATOR.
EXTERNAL
RESET?
EXTERNAL
INTERRUPT?
NO
TURN ON SELECTED OSCILLATOR.
RESET STABILIZATION DELAY TIMER.
YES
HALT
YES
END OF
STABILIZATION
DELAY?
YES
NO
EXTERNAL
RESET?
CLEAR I BIT IN CCR.
SET IRQE BIT IN ISCR.
TURN OFF CPU CLOCK.
KEEP OTHER MODULE
YES
WAIT
TURN ON CPU CLOCK.
1. LOAD PC WITH RESET VECTOR
OR
2. SERVICE INTERRUPT.
a. SAVE CPU REGISTERS ON STACK.
b. SET I BIT IN CCR.
c. LOAD PC WITH INTERRUPT VECTOR.
TURN OFF INTERNAL LOW-POWER OSCILLATOR.
CLEAR ICF, OCF, AND TOF BITS IN TSR.
CLEAR ICIE, OCIE, AND TOIE BITS IN TCR.
CLOCKS ACTIVE.
NO
CORE
INTERRUPT?
YES
TIMER
NO
EXTERNAL
INTERRUPT?
YES
NO
PROG.
INTERRUPT?
YES
TIMER
NO
SIOP
INTERRUPT?
YES
NO
INTERRUPT?
YES
ANALOG
NO
COP
RESET?
YES
CLEAR I BIT IN CCR.
SET IRQE BIT IN ISCR.
TURN OFF CPU CLOCK.
KEEP OTHER MODULE
CLOCKS ACTIVE.
NO
EXTERNAL
RESET?
YES
NO
CORE
INTERRUPT?
YES
TIMER
NO
EXTERNAL
INTERRUPT?
YES
NO
PROG.
INTERRUPT?
YES
TIMER
NO
SIOP
INTERRUPT?
YES
NO
YES
NO
COP
RESET?
YES
INTERRUPT?
ANALOG
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