MC68HC705J1A Motorola, MC68HC705J1A Datasheet - Page 79

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MC68HC705J1A

Manufacturer Part Number
MC68HC705J1A
Description
Manufacturer
Motorola
Datasheet

Specifications of MC68HC705J1A

Case
DIP-20L
Technical Data — MC68HC705J1A
5.1 Contents
5.2
5.3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
5.5
5.2 Introduction
The microcontroller unit (MCU) can enter these low-power standby
modes:
MC68HC705J1A — Rev. 4.0
MOTOROLA
Section 5. Low-Power Modes
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Exiting Stop and Wait Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Effects of Stop and Wait Modes . . . . . . . . . . . . . . . . . . . . . . . .81
Clock Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
COP Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
EPROM/OTPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Data-Retention Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Stop mode — The STOP instruction puts the MCU in its lowest
power-consumption mode.
Wait mode — The WAIT instruction puts the MCU in an
intermediate power-consumption mode.
Halt mode — Halt mode is identical to wait mode, except that an
oscillator stabilization delay of 1 to 4064 internal clock cycles
occurs when the MCU exits halt mode. The stop-to-wait
conversion bit, SWAIT, in the mask option register, enables halt
mode.
Low-Power Modes
Technical Data
79

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