MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 133
MC908AP32CFBE
Manufacturer Part Number
MC908AP32CFBE
Description
Manufacturer
Freescale
Datasheet
1.MC908AP32CFBE.pdf
(324 pages)
Specifications of MC908AP32CFBE
Cpu Family
HC08
Device Core Size
8b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Total Internal Ram Size
2KB
# I/os (max)
32
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
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Program Memory Type
Flash
Program Memory Size
32KB
Lead Free Status / RoHS Status
Compliant
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The coding example below uses the $EE00–$EFFF page for data storage. The data array size is 15
bytes, and the bus speed is 4.9152 MHz. The coding assumes the data block is already loaded in RAM,
with the address pointer, FILE_PTR, pointing to the first byte of the data block.
FILE_PTR:
BUS_SPD
DATASIZE
START_ADDR
DATAARRAY
EE_WRITE
FLASH_START
INITIALISATION:
MAIN:
Freescale Semiconductor
:
MOV
MOV
LDHX
STHX
RTS
BSR
:
:
LHDX
JSR
The EE_WRITE routine is unable to check for incorrect data blocks, such
as the FLASH page boundary address and data size. It is the responsibility
of the user to ensure the starting address indicated in the data block is at
the FLASH page boundary and the data size is 7 to 15. If the FLASH page
is already programmed with a data array with a different size, the
EE_WRITE call will be ignored.
ORG
DS.B
DS.B
DS.W
DS.B
EQU
EQU
ORG
#20,
#15,
#FLASH_START
START_ADDR
INITIALISATION
#FILE_PTR
EE_WRITE
Figure 8-10. EE_WRITE FLASH Memory Usage
RAM
1
1
1
15
$FF36
$EE00
FLASH
BUS_SPD
DATASIZE
PAGE BOUNDARY
PAGE BOUNDARY
ONE PAGE = 512 BYTES
MC68HC908AP Family Data Sheet, Rev. 4
; Indicates 4x bus frequency
; Data size to be programmed
; FLASH starting address
; Reserved data array
NOTE
CONTROL: 9 BYTES
F L A S H
DATA ARRAY
DATA ARRAY
DATA ARRAY
ROM-Resident Routines
133
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