68HC705JB3 datasheet(44/134 Pages) FREESCALE

tên linh kiện	68HC705JB3

Giải thích chi tiết về linh kiện	8-bit microcontroller units (MCUs)

PDF	134 Pages

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nhà sản xuất	FREESCALE [Freescale Semiconductor, Inc]

Trang chủ	http://www.freescale.com

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GENERAL RELEASE SPECIFICATION

November 5, 1998

MOTOROLA

LOW POWER MODES

MC68HC05JB3

6-2

REV 1

Figure 6-1. STOP and WAIT Flowchart

STOP

EXTERNAL

RESET?

EXTERNAL

INTERRUPT?

START STABILIZATION DELAY

YES

END OF

STABILIZATION

DELAY?

YES

WAIT

RESTART INTERNAL PROCESSOR CLOCK

1. LOAD PC WITH RESET VECTOR

2. SERVICE INTERRUPT.

a. SAVE CPU REGISTERS ON STACK.

b. SET I BIT IN CCR.

c. LOAD PC WITH INTERRUPT VECTOR.

EXTERNAL

RESET?

YES

EXTERNAL

INTERRUPT?

YES

USB

INTERRUPT?

YES

RESET OR

YES

STOP EXTERNAL OSCILLATOR,

STOP INTERNAL TIMER CLOCK,

RESET START-UP DELAY

STOP INTERNAL PROCESSOR CLOCK,

CLEAR I-BIT IN CCR,

SET IRQE IN ICSR

USB

INTERRUPT

YES

IRQ

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

Freescale Semiconductor, Inc.

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