參數(shù)資料
型號: MC68HC705JB4P
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 74/134頁
文件大?。?/td> 1305K
代理商: MC68HC705JB4P
GENERAL RELEASE SPECIFICATION
February 24, 1999
MOTOROLA
LOW POWER MODES
MC68HC05JB4
6-2
REV 2
Figure 6-1. STOP and WAIT Flowchart
STOP
EXTERNAL
RESET?
EXTERNAL
INTERRUPT?
NO
START STABILIZATION DELAY
YES
END OF
STABILIZATION
DELAY?
YES
NO
WAIT
RESTART INTERNAL PROCESSOR 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.
NO
EXTERNAL
RESET?
YES
NO
YES
NO
EXTERNAL
INTERRUPT?
YES
NO
USB
INTERRUPT?
YES
RESET OR
NO
YES
IRQ2
INTERRUPT?
EXTERNAL
YES
NO
STOP EXTERNAL OSCILLATOR,
STOP INTERNAL TIMER CLOCK,
RESET START-UP DELAY
STOP INTERNAL PROCESSOR CLOCK,
CLEAR I-BIT IN CCR,
SET IRQE IN ICSR
EXTERNAL
INTERRUPT?
USB
INTERRUPT
NO
YES
IRQ
IRQ2
OR RESET?
RESTART EXTERNAL OSCILLATOR,
IRQ
TIMER1
INTERRUPT?
INTERNAL
MFT
INTERRUPT?
INTERNAL
EXTERNAL OSCILLATOR ACTIVE,
INTERNAL TIMER CLOCK ACTIVE
STOP INTERNAL PROCESSOR CLOCK,
CLEAR I-BIT IN CCR,
SET IRQE IN ICSR
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