MC68HC908JL8CP Freescale Semiconductor, MC68HC908JL8CP Datasheet - Page 173
MC68HC908JL8CP
Manufacturer Part Number
MC68HC908JL8CP
Description
IC MCU 8K FLASH 8MHZ 28-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908JL8CDWER.pdf
(212 pages)
Specifications of MC68HC908JL8CP
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
23
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 13x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Chapter 14
Computer Operating Properly (COP)
14.1 Introduction
The computer operating properly (COP) module contains a free-running counter that generates a reset if
allowed to overflow. The COP module helps software recover from runaway code. Prevent a COP reset
by clearing the COP counter periodically. The COP module can be disabled through the COPD bit in the
CONFIG1 register.
14.2 Functional Description
Figure 14-1
Freescale Semiconductor
NOTE: See SIM section for more details.
INTERNAL RESET SOURCES
(COPRS FROM CONFIG1)
shows the structure of the COP module.
COPD (FROM CONFIG1)
RESET VECTOR FETCH
COPEN (FROM SIM)
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
COPCTL WRITE
COPCTL WRITE
COP RATE SEL
RESET
ICLK
(1)
Figure 14-1. COP Block Diagram
COP MODULE
COP CLOCK
12-BIT SIM COUNTER
COP COUNTER
6-BIT COP COUNTER
CLEAR
SIM
RESET STATUS REGISTER
SIM RESET CIRCUIT
173
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