C8051F709-GQR Silicon Labs, C8051F709-GQR Datasheet - Page 128

• Manufacturer Part Number: C8051F709-GQR
• Description: 8-bit Microcontrollers - MCU 8kB 32B EEPROM Cap Sense
• Manufacturer: Silicon Labs

Specifications of C8051F709-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051F70x/71x
19. In-System Device Identification
The C8051F70x/71x has SFRs that identify the device family and derivative. These SFRs can be read by
firmware at runtime to determine the capabilities of the MCU that is executing code. This allows the same
firmware image to run on MCUs with different memory sizes and peripherals, and dynamically changing
functionality to suit the capabilities of that MCU.
In order for firmware to identify the MCU, it must read three SFRs. HWID describes the MCU’s family,
DERIVID describes the specific derivative within that device family, and REVID describes the hardware
revision of the MCU.
SFR Definition 19.1. HWID: Hardware Identification Byte
SFR Address = 0xC4; SFR Page = F
SFR Definition 19.2. DERIVID: Derivative Identification Byte
SFR Address = 0xEC; SFR Page = F
128
Name
Reset
Name
Reset
7:0 HWID[7:0]
7:0 DERIVID[7:0]
Bit
Bit
Type
Type
Bit
Bit
Varies
Name
Name
R
R
7
0
7
Varies
Describes the MCU family.
0x1E: Devices covered in this document (C8051F70x/71x)
Hardware Identification Byte.
Derivative Identification Byte.
Shows the C8051F70x/71x derivative being used.
0xD0: C8051F700; 0xD1: C8051F701; 0xD2: C8051F702; 0xD3: C8051F703
0xD4: C8051F704; 0xD5: C8051F705; 0xD6: C8051F706; 0xD7: C8051F707
0xD8: C8051F708; 0xD9: C8051F709; 0xDA: C8051F710; 0xDB: C8051F711
0xDC: C8051F712; 0xDD: C8051F713; 0xDE: C8051F714; 0xDF: C8051F715
0xE0: C8051F716; 0xE1: C8051F717
R
R
6
0
6
Varies
R
R
5
0
5
Varies
Rev. 1.0
R
R
4
1
4
DERIVID[7:0]
HWID[7:0]
Description
Description
Varies
R
R
3
1
3
Varies
R
R
2
1
2
Varies
R
R
1
1
1
Varies
R
R
0
0
0