MC68HC908LJ12CFU Freescale Semiconductor, MC68HC908LJ12CFU Datasheet - Page 371

• Manufacturer Part Number: MC68HC908LJ12CFU
• Description: IC MCU 12K FLASH 8MHZ 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908LJ12CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: IRSCI, SPI
• Peripherals: LCD, LVD, POR, PWM
• Number Of I /o: 32
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

20.1 Contents
20.2 Introduction
MC68HC908LJ12
Freescale Semiconductor
Technical Data — MC68HC908LJ12
Section 20. Computer Operating Properly (COP)
—
Rev. 2.1
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 the configuration register 1 (CONFIG1).
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .375
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .372
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .375
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 376
Computer Operating Properly (COP)
ICLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 374
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .376
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .376
Technical Data
371