Specification	C8051F121R

A/D Channels	8 count
A/D Resolution (bits)	8 bit, 10 bit
Connectivity	SMBus (2-Wire/I2C), UART, USART, EMI, SPI, EBI
Core Processor	8051
Core Size (Bit Width)	8 Bit
D/A Channels	2 count
D/A Resolution (bits)	12 bit
Mounting Type	Surface Mount
Number of I/O	32
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Oscillator Type	Internal
Package / Case	64-TQFP
Package Length	10 mm
Package Name	64-TQFP
Package Width	10 mm
Peripherals	PWM, Temp Sensor, Brown-out Detect, Reset, WDT, POR
Program Memory Depth (128KB)	128 K
Program Memory Size	128KB
Program Memory Type	FLASH
Program Memory Width (128KB)	8
RAM Size Depth	8.25 K
RAM Size Width	8 bit
Speed	100 MHz
Voltage - Supply (Vcc/Vdd) Maximum	3.6 V
Voltage - Supply (Vcc/Vdd) Minimum	3 V

C8051F121 Series

Part	Connectivity	Speed	Oscillator Type	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Program Memory Type	Program Memory Depth (128KB)	Program Memory Size	Program Memory Width (128KB)	Number of I/O	A/D Channels	A/D Resolution (bits)	D/A Channels	D/A Resolution (bits)	Package Width	Package Name	Package Length	Core Processor	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Core Size (Bit Width)	RAM Size Depth	RAM Size Width	Package / Case	Peripherals
SILICON LABS C8051F121R	EBI EMI SMBus (2-Wire/I2C) SPI UART USART	100 MHz	Internal	3.6 V	3 V	FLASH	128 K	128KB	8	32	8 count	8 bit 10 bit	2 count	12 bit	10 mm	64-TQFP	10 mm	8051	85 °C	-40 °C	Surface Mount	8 Bit	8.25 K	8 bit	64-TQFP	Brown-out Detect POR PWM Reset Temp Sensor WDT
SILICON LABS C8051F121-GQR	EBI EMI SMBus (2-Wire/I2C) SPI UART USART	100 MHz	Internal	3.6 V	3 V	FLASH	128 K	128KB	8	32	8 count	8 bit 12 bit	2 count	12 bit	10 mm	64-TQFP	10 mm	8051	85 °C	-40 °C	Surface Mount	8 Bit	8.25 K	8 bit	64-TQFP	Brown-out Detect POR PWM Reset Temp Sensor WDT
SILICON LABS C8051F121	EBI EMI SMBus (2-Wire/I2C) SPI UART USART	100 MHz	Internal	3.6 V	3 V	FLASH	128 K	128KB	8	32	8 count	8 bit 12 bit	2 count	12 bit	10 mm	64-TQFP	10 mm	8051	85 °C	-40 °C	Surface Mount	8 Bit	8.25 K	8 bit	64-TQFP	Brown-out Detect POR PWM Reset Temp Sensor WDT

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