MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 175

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

14.3.7 COPRS (COP Rate Select)
The COPRS signal reflects the state of the COP rate select bit (COPRS) in the configuration register 1.
COPRS — COP Rate Select Bit
COPD — COP Disable Bit
14.4 COP Control Register
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.
14.5 Interrupts
The COP does not generate CPU interrupt requests.
14.6 Monitor Mode
The COP is disabled in monitor mode when V
14.7 Low-Power Modes
The WAIT and STOP instructions put the MCU in low-power consumption standby modes.
Freescale Semiconductor
COPRS selects the COP timeout period. Reset clears COPRS.
COPD disables the COP module.
1 = COP timeout period is (2
0 = COP timeout period is (2
1 = COP module disabled
0 = COP module enabled
Address:
Address:
Reset:
Read:
Write:
Reset:
Read:
Write:
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
COPRS
$001F
$FFFF
Bit 7
Bit 7
R
0
Figure 14-2. Configuration Register 1 (CONFIG1)
Figure 14-3. COP Control Register (COPCTL)
= Reserved
R
6
0
6
13
18
– 2
– 2
4
4
) ICLK cycles
) ICLK cycles
R
5
0
5
TST
Low byte of reset vector
Unaffected by reset
is present on the IRQ pin or on the RST pin.
Clear COP counter
LVID
4
0
4
R
3
3
0
SSREC
2
2
0
STOP
1
1
0
COP Control Register
COPD
Bit 0
Bit 0
0
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