參數(shù)資料
型號: MC68HC05SB7
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, PDSO28
封裝: MO-150, SSOP-28
文件頁數(shù): 112/170頁
文件大?。?/td> 2161K
代理商: MC68HC05SB7
GENERAL RELEASE SPECIFICATION
August 27, 1998
MOTOROLA
LOW POWER MODES
MC68HC05SB7
6-2
REV 2.1
Figure 6-1. STOP and WAIT Flowchart
STOP
CLEAR I BIT IN CCR.
SET IRQE BIT IN ISCR.
CLEAR CTOF, RTIF, CTOFE, AND RTIE BITS IN TSCR.
DISABLE OSCILLATOR
EXTERNAL
RESET?
EXTERNAL
INTERRUPT?
NO
TURN ON OSCILLATOR.
RESET STABILIZATION DELAY TIMER.
YES
END OF
STABILIZATION
DELAY?
YES
NO
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.
CLEAR ICF, OCF AND TOF BITS IN TSR.
CLEAR ICIE, OCIE and TOIE BITS IN TCR.
CLEAR I BIT IN CCR.
SET IRQE BIT IN ISCR.
TURN OFF CPU CLOCK.
KEEP OTHER MODULE
CLOCKS ACTIVE.
NO
EXTERNAL
RESET?
YES
NO
INTERRUPT?
YES
CDET
NO
EXTERNAL
INTERRUPT?
YES
NO
PROG.
INTERRUPT?
YES
TIMER
NO
SM-BUS
INTERRUPT?
YES
NO
YES
NO
COP
RESET?
YES
INTERRUPT?
ANALOG
CORE
INTERRUPT?
TIMER
YES
NO
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