STM8S903K3 datasheet(50/121 Pages) STMICROELECTRONICS

Part #	STM8S903K3

Description	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, IC

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Unique ID

STM8S903K3 STM8S903F3

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DocID15590 Rev 10

9

Unique ID

The devices feature a 96-bit unique device identifier which provides a reference number that

is unique for any device and in any context. The 96 bits of the identifier can never be altered

by the user.

The unique device identifier can be read in single bytes and may then be concatenated

using a custom algorithm.

The unique device identifier is ideally suited:



For use as serial numbers



For use as security keys to increase the code security in the program memory while

using and combining this unique ID with software cryptographic primitives and

protocols before programming the internal memory.



To activate secure boot processes

Table 17. Unique ID registers (96 bits)

Address

Content

description

Unique ID bits

76543

210

0x4865

X co-ordinate on

the wafer

U_ID[7:0]

0x4866

U_ID[15:8]

0x4867

Y co-ordinate on

the wafer

U_ID[23:16]

0x4868

U_ID[31:24]

0x4869

Wafer number

U_ID[39:32]

0x486A

Lot number

U_ID[47:40]

0x486B

U_ID[55:48]

0x486C

U_ID[63:56]

0x486D

U_ID[71:64]

0x486E

U_ID[79:72]

0x486F

U_ID[87:80]

0x4870

U_ID[95:88]

Similar Part No. - STM8S903K3

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	STM8S903K3	1Mb / 124P	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I짼C May 2017
	STM8S903K3T6C	1,017Kb / 116P	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I짼C
	STM8S903K3	1Mb / 124P	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I짼C May 2017

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Similar Description - STM8S903K3

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	STM8S903K3	1Mb / 124P	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I짼C May 2017
	STM8S903K3T6C	1,017Kb / 116P	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I짼C
	CR8F612X	1Mb / 89P	16 MHz CR8F 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM,640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I²C April 2009 Rev 1
	STM8S005K6	1,006Kb / 103P	Value line, 16 MHz STM8S 8-bit MCU, 32 Kbytes Flash, data EEPROM,10-bit ADC, timers, UART, SPI, IC
	STM8S003F3P6TR	956Kb / 100P	Value line, 16 MHz STM8S 8-bit MCU, 8 Kbytes Flash, 128 bytes data EEPROM, 10-bit ADC, 3 timers, UART, SPI
	STM8S003F3U6TR	956Kb / 100P	Value line, 16 MHz STM8S 8-bit MCU, 8 Kbytes Flash, 128 bytes data EEPROM, 10-bit ADC, 3 timers, UART, SPI, I짼C June 2012 Rev 3
	STM8S103F3P3	1Mb / 113P	Access line, 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, data EEPROM,10-bit ADC, 3 timers, UART, SPI, I2C
	STM8S103K3T6C	1Mb / 117P	Access line, 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, data EEPROM,10-bit ADC, 3 timers, UART, SPI, I짼C
	STM8S103F2	1Mb / 121P	Access line, 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, data EEPROM,10-bit ADC, 3 timers, UART, SPI, I짼C February 2017
	STM8S103F3P6TR	1Mb / 113P	Access line, 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, data EEPROM,10-bit ADC, 3 timers, UART, SPI, I짼C September 2010 Rev 6

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