Unique Id Number And Important Parameter (Chipid) Stored In Read-Only Special Function Register; Interpretation Of Global Unique Id Number In Chip - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual
7.4 Unique ID number and important parameter (CHIPID) stored in
read-only special function register
Some STC8A8K64D4 series microcontrollers have built-in 32-byte read-only special function register CHIPID. The content
in CHIPID can only be read by the user program and cannot be modified. Using the data in CHIPID to encrypt user programs is the
optimal solution officially recommended by STC.
Related registers
Symbol Description
CHIPID00 hardware digital ID00
CHIPID01 hardware digital ID01
CHIPID02 hardware digital ID02
CHIPID03 hardware digital ID03
CHIPID04 hardware digital ID04
CHIPID05 hardware digital ID05
CHIPID06 hardware digital ID06
CHIPID07 hardware digital ID07
CHIPID08 hardware digital ID08
CHIPID09 hardware digital ID09
CHIPID10 hardware digital ID10
CHIPID11 hardware digital ID11
CHIPID12 hardware digital ID12
CHIPID13 hardware digital ID13
CHIPID14 hardware digital ID14
CHIPID15 hardware digital ID15
CHIPID16 hardware digital ID16
CHIPID17 hardware digital ID17
CHIPID18 hardware digital ID18
CHIPID19 hardware digital ID19
CHIPID20 hardware digital ID20
CHIPID21 hardware digital ID21
CHIPID22 hardware digital ID22
CHIPID23 hardware digital ID23
CHIPID24 hardware digital ID24
CHIPID25 hardware digital ID25
CHIPID26 hardware digital ID26
CHIPID27 hardware digital ID27
CHIPID28 hardware digital ID28
CHIPID29 hardware digital ID29
CHIPID30 hardware digital ID30
CHIPID31 hardware digital ID31

7.4.1 Interpretation of Global Unique ID Number in CHIP

Symbol Description
CHIPID00 hardware digital ID00
CHIPID01 hardware digital ID01
CHIPID02 hardware digital ID02
CHIPID03 hardware digital ID03
CHIPID04 hardware digital ID04
CHIPID05 hardware digital ID05
CHIPID06 hardware digital ID06
[CHIPID0, CHIPID1]: 16-bit MCU ID, which is used to distinguish different MCU models (higher bit first).
The commonly used MCU IDs of STC8A8K64D4 series are shown in the following table:
STC8A8K16D4 (F7F1)
STC8A8K32D4 (F7F2)
STC8A8K48D4 (F7F5)
STC8A8K60D4 (F7F3)
STC8A8K64D4 (F7F4)
[CHIPID2, CHIPID3]: 16-bit test machine number (higher bit first).
[CHIPID4, CHIPID5, CHIPID6]: 24-bit test serial number (higher bit first).
Address
B7 B6
FDE0H
FDE1H
FDE2H
FDE3H
FDE4H
FDE5H
FDE6H
FDE7H
FDE8H
FDE9H
FDEAH
FDEBH
FDECH
FDEDH
FDEEH
FDEFH
FDF0H
FDF1H
FDF2H
FDF3H
FDF4H
FDF5H
FDF6H
FDF7H
FDF8H
FDF9H
FDFAH
FDFBH
FDFCH
FDFDH
FDFEH
FDFFH
Address
B7
FDE0H
FDE1H
FDE2H
FDE3H
FDE4H
FDE5H
FDE6H
Bit address and symbol
B5 B4 B3
Globally Unique ID Number (0th byte)
Globally Unique ID Number (1st byte)
Globally Unique ID Number (2nd byte)
Globally Unique ID Number (3rd byte)
Globally Unique ID Number (4th byte)
Globally Unique ID Number (5th byte)
Globally Unique ID Number (6th byte)
Internal 1.19V reference signal source (high byte)
Internal 1.19V reference signal source (low byte)
32K Power-down wake-up timer frequency(high byte)
32K Power-down wake-up timer frequency (low byte)
IRC parameter of 22.1184MHz (27M band)
IRC parameter of 24MHz (27M band)
IRC parameter of 20MHz (27M band)
IRC parameter of 27MHz (27M band)
IRC parameter of 30MHz (27M band)
IRC parameter of 33.1776MHz (27M band)
IRC parameter of 35MHz (44M band)
IRC parameter of 36.864MHz(44M band)
IRC parameter of 40MHz(44M band)
IRC parameter of 45MHz(44M band)
VRTRIM parameter of 6M band
VRTRIM parameter of 10M band
VRTRIM parameter of 27M band
VRTRIM parameter of 44M band
00H
User program space end address (high byte)
Chip test time (year)
Chip test time (month)
Chip test time (day)
Chip package form number
5AH
Bit address and symbol
B6 B5 B4
Globally Unique ID Number (0th byte)
Globally Unique ID Number (1st byte)
Globally Unique ID Number (2nd byte)
Globally Unique ID Number (3rd byte)
Globally Unique ID Number (4th byte)
Globally Unique ID Number (5th byte)
Globally Unique ID Number (6th byte)
-
B2 B1 B0
B3 B2 B1 B0
Reset value
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Reset
value
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nnnn,nnnn
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