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M68HC08 Datasheet(PDF) 16 Page - Freescale Semiconductor, Inc

Part # M68HC08
Description  Microcontrollers
PDF  288 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 16 Page - Freescale Semiconductor, Inc

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Table of Contents
Data Sheet
MC68HC908BD48 — Rev. 2.1
16
Table of Contents
Freescale Semiconductor
Section 19. Computer Operating Properly (COP)
19.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
19.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
19.3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
19.4
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
19.4.1
OSCXCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
19.4.2
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
19.4.3
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
19.4.4
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
19.4.5
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
19.4.6
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
19.4.7
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
19.4.8
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 260
19.5
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
19.6
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
19.7
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
19.8
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
19.8.1
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
19.8.2
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
19.9
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 262
Section 20. Break Module (BRK)
20.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
20.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
20.3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
20.4
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
20.4.1
Flag Protection During Break Interrupts . . . . . . . . . . . . . . . 266
20.4.2
CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . 266
20.4.3
TIM During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . 266
20.4.4
COP During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . 266
20.5
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266



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