mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 15

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mc68hc908jb8

Manufacturer Part Number
mc68hc908jb8
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.7.1
14.7.2
14.8
14.9
14.9.1
14.9.2
15.1
15.2
15.3
15.4
15.4.1
15.4.2
15.4.3
15.4.4
15.4.5
15.4.6
15.4.7
15.4.8
15.5
15.6
Section 15. Computer Operating Properly (COP)
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Keyboard Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Keyboard Module During Break Interrupts . . . . . . . . . . . . . . . 233
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .241
Pin Name Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230
I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Section 14. Keyboard Interrupt Module (KBI)
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
Keyboard Status and Control Register. . . . . . . . . . . . . . . . 233
Keyboard Interrupt Enable Register . . . . . . . . . . . . . . . . . . 235
OSCXCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 240
Table of Contents
Table of Contents
Technical Data
15

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