MCHC908GR8AVFAE Freescale Semiconductor, MCHC908GR8AVFAE Datasheet - Page 79

• Manufacturer Part Number: MCHC908GR8AVFAE
• Description: IC MCU 8K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908GR8AVFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Chapter 6
Computer Operating Properly (COP) Module
6.1 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
CONFIG register.
6.2 Functional Description
Figure 6-1
Freescale Semiconductor
1. See
INTERNAL RESET SOURCES
shows the structure of the COP module.
(COPRS FROM CONFIG1)
COPD (FROM CONFIG1)
Chapter 14 System Integration Module (SIM)
STOP INSTRUCTION
COPEN (FROM SIM)
COP RATE SELECT
COPCTL WRITE
COPCTL WRITE
CGMXCLK
RESET
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
(1)
Figure 6-1. COP Block Diagram
COP CLOCK
12-BIT SIM COUNTER
COP COUNTER
CLEAR
6-BIT COP COUNTER
COP MODULE
SIM MODULE
for more details.
RESET STATUS REGISTER
SIM RESET CIRCUIT
79