MC68HC908JK3CDW Freescale Semiconductor, MC68HC908JK3CDW Datasheet - Page 175

• Manufacturer Part Number: MC68HC908JK3CDW
• Description: IC MCU 8MHZ 4K FLASH 20-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JK3CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

15.1 Contents
15.2 Introduction
MC68H(R)C908JL3
Freescale Semiconductor
Technical Data — MC68H(R)C908JL3
Section 15. Computer Operating Properly (COP)
—
Rev. 1.1
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
15.5
15.6
15.7
15.8
15.8.1
15.8.2
15.9
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.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 178
Computer Operating Properly (COP)
2OSCOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 176
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Technical Data
173