MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 132

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

Monitor ROM (MON)
Technical Data
132
The control and data bytes are described below.
Freescale Semiconductor, Inc.
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Figure 9-8. Data Block Format for ROM-Resident Routines
For More Information On This Product,
Bus speed — This one byte indicates the operating bus speed of
the MCU. The value of this byte should be equal to 4 times the bus
speed, and should not be set to less than 4 (i.e. minimum bus
speed is 1MHz).
Data size — This one byte indicates the number of bytes in the
data array that are to be manipulated. The maximum data array
size is 128. Routines EE_WRITE and EE_READ are restricted to
manipulate a data array between 2 to 15 bytes. Whereas routines
ERARNGE and MON_ERARNGE do not manipulate a data array,
thus, this data size byte has no meaning.
Start address — These two bytes, high byte followed by low byte,
indicate the start address of the FLASH memory to be
manipulated.
Data array — This data array contains data that are to be
manipulated. Data in this array are programmed to FLASH
memory by the programming routines: PRGRNGE,
MON_PRGRNGE, EE_WRITE. For the read routines: LDRNGE,
MON_LDRNGE, and EE_READ, data is read from FLASH and
stored in this array.
ADDRESS AS POINTER
FILE_PTR
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Monitor ROM (MON)
ARRAY
DATA
$XXXX
START ADDRESS HIGH (ADDRH)
START ADDRESS LOW (ADDRL)
BUS SPEED (BUS_SPD)
DATA SIZE (DATASIZE)
R
DATA N
DATA 0
DATA 1
A
M
MC68HC908JL8
BLOCK
DATA
MOTOROLA
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Rev. 2.0