MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 95

• 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

The routines are designed to be called as stand-alone subroutines in the user program or monitor mode.
The parameters that are passed to a routine are in the form of a contiguous data block, stored in RAM.
The index register (H:X) is loaded with the address of the first byte of the data block (acting as a pointer),
and the subroutine is called (JSR). Using the start address as a pointer, multiple data blocks can be used,
any area of RAM be used. A data block has the control and data bytes in a defined order, as shown in
Figure
During the software execution, it does not consume any dedicated RAM location, the run-time heap will
extend the system stack, all other RAM location will not be affected.
Freescale Semiconductor
1. The listed stack size excludes the 2 bytes used by the calling instruction, JSR.
7-8.
MON_PRGRNGE
MON_ERARNGE
MON_LDRNGE
Routine Name
EE_WRITE
PRGRNGE
ERARNGE
EE_READ
LDRNGE
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
ADDRESS AS POINTER
FILE_PTR
Figure 7-8. Data Block Format for ROM-Resident Routines
Table 7-10. Summary of ROM-Resident Routines
Program a range of locations
Erase a page or the entire array
Loads data from a range of locations
Program a range of locations in monitor
mode
Erase a page or the entire array in monitor
mode
Loads data from a range of locations in
monitor mode
Emulated EEPROM write. Data size ranges
from 2 to 15 bytes at a time.
Emulated EEPROM read. Data size ranges
from 2 to 15 bytes at a time.
ARRAY
DATA
$XXXX
Routine Description
START ADDRESS HIGH (ADDRH)
START ADDRESS LOW (ADDRL)
BUS SPEED (BUS_SPD)
DATA SIZE (DATASIZE)
R
DATA N
DATA 0
DATA 1
A
M
Call Address
$FC06
$FCBE
$FF30
$FF28
$FF2C
$FF24
$FD3F
$FDD0
BLOCK
DATA
ROM-Resident Routines
Stack Used
(bytes)
15
17
11
11
24
16
9
9
(1)
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