MC68HC908SR12CB Freescale Semiconductor, MC68HC908SR12CB Datasheet - Page 351

• Manufacturer Part Number: MC68HC908SR12CB
• Description: IC MCU 12K FLASH 8MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 29
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

21.1 Contents
21.2 Introduction
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Data Sheet — MC68HC908SR12•MC68HC08SR12
Section 21. Computer Operating Properly (COP)
21.2
21.3
21.4
21.4.1
21.4.2
21.4.3
21.4.4
21.4.5
21.4.6
21.4.7
21.4.8
21.5
21.6
21.7
21.8
21.8.1
21.8.2
21.9
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .352
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 356
Computer Operating Properly (COP)
ICLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .353
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 354
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356
Data Sheet
351