STC micro STC8A8K64D4 Series - Special Parameters of Memory

STC8A8K64D4 Series Manual
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7.3 Special parameters of memory
The data memory and program memory of the STC8A8K64D4 series of microcontrollers store some special parameters related
to the chip, including the global unique ID, the frequency of the 32K power-down wake-up timer, the internal reference voltage
value, and the IRC parameters.
The addresses of these parameters in the Flash program memory (ROM) are as follows:
Parameters
Addresses
Parameter
Description
STC8A8K16D4
STC8A8K32D4
STC8A8K60D4
STC8A8K64D4
global unique ID
3FF9H~3FFFH
7FF9H~7FFFH
0EFF9H~0EFFFH
0FDF9H~0FDFFH
7 bytes
internal 1.19V reference voltage
3FF7H~3FF8H
7FF7H~7FF8H
0EFF7H~0EFF8H
0FDF7H~0FDF8H
mV (high byte first)
frequency of the 32K power-down wake-up
timer
3FF5H~3FF6H
7FF5H~7FF6H
0EFF5H~0EFF6H
0FDF5H~0FDF6H
Hz (high byte first)
parameters of 22.1184MHz IRC
3FF4H
7FF4H
0EFF4H
0FDF4H
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parameters of 24MHz IRC
3FF3H
7FF3H
0EFF3H
0FDF3H
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parameters of 20MHz IRC
3FF2H
7FF2H
EFF2H
FDF2H
parameters of 27MHz IRC
3FF1H
7FF1H
EFF1H
FDF1H
parameters of 30MHz IRC
3FF0H
7FF0H
EFF0H
FDF0H
parameters of 33.1776MHz IRC
3FEFH
7FEFH
EFEFH
FDEFH
parameters of 35MHz IRC
3FEEH
7FEEH
EFEEH
FDEEH
parameters of 36.684MHz IRC
3FEDH
7FEDH
EFEDH
FDEDH
parameters of 40MHz IRC
3FECH
7FECH
EFECH
FDECH
parameters of 45MHz IRC
3FEBH
7FEBH
EFEBH
FDEBH
parameters of VRTRIM in 6M band
3FEAH
7FEAH
EFEAH
FDEAH
parameters of VRTRIM in 10M band
3FE9H
7FE9H
EFE9H
FDE9H
parameters of VRTRIM in 27M band
3FE8H
7FE8H
EFE8H
FDE8H
parameters of VRTRIM in 44M band
3FE7H
7FE7H
EFE7H
FDE7H
The addresses of these parameters in the data memory (RAM) are as follows:
Parameters
Addresses
Parameter Description
internal reference voltage
idata0EFH~0F0H
mV (high byte first)
global unique ID
idata0F1H~0F7H
7 bytes
frequency of the 32K power-down wake-up timer
idata0F8H~0F9H
Hz (high byte first)
parameters of 22.1184MHz IRC
idata0FAH
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parameters of 24MHz IRC
idata0FBH
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