MC68HC908AB32CFU Freescale Semiconductor, MC68HC908AB32CFU Datasheet - Page 353

• Manufacturer Part Number: MC68HC908AB32CFU
• Description: IC MCU 8MHZ 32K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AB32CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM
• Number Of I /o: 51
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

20.1 Contents
20.2 Introduction
MC68HC908AB32
Freescale Semiconductor
Technical Data — MC68HC908AB32
Section 20. Computer Operating Properly (COP)
—
Rev. 1.1
20.2
20.3
20.4
20.4.1
20.4.2
20.4.3
20.4.4
20.4.5
20.4.6
20.4.7
20.4.8
20.5
20.6
20.7
20.8
20.8.1
20.8.2
20.9
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 configuration register 1 (CONFIG1).
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .357
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .354
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .357
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 358
Computer Operating Properly (COP)
CGMXCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 356
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .358
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .358
Technical Data
353