C8051F52x / C8051F53x - 8-Bit Automotive MCU Redefined

Most Functionally Dense 8-Bit Automotive MCUs on the Market

The C8051F52x and C8051F53x families of MCUs are the most functionally dense 8-bit automotive MCUs on the market and offer a superior level of integration, performance and features over competing solutions.
All devices are designed to operate across the full automotive temperature (–40 to 125 °C) and voltage (2.7 to 5.25 V) range. The C8051F52x family is the first to combine a ±0.5% integrated precision internal oscillator with 8 kB Flash, 25 MIPS, 12-bit ADC, dedicated LIN 2.0 controller, 16-bit timers/PWM, SPI, UART and six I/O lines in a small 3 x 3 mm, 10-pin QFN package. The C8051F53x family has the same feature set, but adds ten additional I/O lines and is offered in 20-pin QFN and TSSOP packages. Both families integrate additional analog features such as a programmable comparator, voltage regulator and on-chip temperature sensor to further reduce design complexity. This highly integrated architecture enables automotive electronics designers to simplify the design process and reduce system cost.

Silicon Labs Series	Memory Size	RAM Size	Number of I/O	Speed	Package
C8051F52x	2 / 4 / 8kB x 8	256 x 8	8	25MHz	10-QFN
C8051F53x	2 / 4 / 8kB x 8	256 x 8	16	25MHz	20-QFN / 20-TSSOP


Features

	•	25 MIPS 8051 CPU
	•	8 kB Flash memory
	•	256 B RAM
	•	25 MHz on-board oscillator (±0.5%)
	•	Dedicated LIN hardware engine (both master and slave; V1.2 and V2.0 compatible)
	•	12-bit, 200 ksps ADC, ±1LSB INL
	•	Up to 16 analog and digital I/O lines
	•	2.7 to 5.25 V input supply
	•	–40 to 125 °C operating range
	•	On-chip comparator and temperature sensor
	•	Packages
		° QFN10 (3 x 3 mm)
		° QFN20 (4 x 4 mm)
		° TSSOP20 (6.5 x 6.5 mm)

Documentation

C8051F520 Data Short C8051F530 Data Short

C8051F52x-53x Data Sheet

MCU Solutions for Automotive Systems

Optimized for Point of Control
and Body Electronics

8-Bit Automotive MCU Block Diagram