MCR908JK3MDWE Freescale Semiconductor, MCR908JK3MDWE Datasheet - Page 179

• Manufacturer Part Number: MCR908JK3MDWE
• Description: IC MCU 4K FLASH 20-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCR908JK3MDWE

• 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

15.5 COP Control Register
15.6 Interrupts
15.7 Monitor Mode
15.8 Low-Power Modes
15.8.1 Wait Mode
MC68H(R)C908JL3
Freescale Semiconductor
—
Rev. 1.1
Address:
The COP control register is located at address $FFFF and overlaps the
reset vector. Writing any value to $FFFF clears the COP counter and
starts a new timeout period. Reading location $FFFF returns the low
byte of the reset vector.
The COP does not generate CPU interrupt requests.
The COP is disabled in monitor mode when V
IRQ1 pin or on the RST pin.
The WAIT and STOP instructions put the MCU in low-power
consumption standby modes.
The COP continues to operate during wait mode. To prevent a COP
reset during wait mode, periodically clear the COP counter in a CPU
interrupt routine.
Reset:
Read:
Write:
$FFFF
Computer Operating Properly (COP)
Bit 7
Figure 15-3. COP Control Register (COPCTL)
6
5
Low byte of reset vector
Unaffected by reset
Clear COP counter
4
Computer Operating Properly (COP)
3
DD
+ V
2
HI
is present on the
1
Technical Data
Bit 0
177