Document
C8051F85x/86x
Low-Cost 8-bit MCU Family with up to 8 kB of Flash
Memory
High-Speed CIP-51 μC Core
- Up to 8 kB flash
- Efficient, pipelined instruction architecture
- Flash is in-system programmable in 512-Byte sectors - Up to 512 Bytes RAM (256 + 256)
On-Chip Debug - On-chip debug circuitry facilitates full speed, non-intrusive in-
system debug (no emulator required)
- Provides breakpoints, single stepping, inspect/modify memory
and registers
12-Bit Analog-to-Digital Converter - Up to 16 input channels - Up to 200 ksps 12-bit mode or 800 ksps 10-bit mode - Internal VREF or external VREF supported
- Up to 25 MIPS throughput with 25 MHz clock - Uses standard 8051 instruction set - Expanded interrupt handler
s Communication Peripherals n - UART
- I2C / SMBus™
ig - SPI™ s Timer/Counters and PWM e - 4 General-Purpose 16-bit Timer/Counters
- 16-bit Programmable Counter Array (PCA) with three channels
D of PWM, capture/compare, or frequency output capability, and
Internal Low-Power Oscillator - Calibrated to 24.5 MHz
w - Low supply current
- ±2% accuracy over supply and temperature
e Internal Low-Frequency Oscillator N - 80 kHz nominal operation
- Low supply current
r - Independent clock source for watchdog timer fo 2 Analog Comparators
- Programmable hysteresis and response time - Configurable as interrupt or reset source
d - Low current e General-Purpose I/O d - Up to 18 pins
- 5 V-Tolerant
Not Recommen - Crossbar-enabled
hardware kill/safe state capability
Additional Support Peripherals - Independent watchdog timer clocked from LFO - 16-bit CRC engine
Unique Identifier - 32-bit unique key for each device
Supply Voltage - 2.2 to 3.6 V
Package Options - 16-pin SOIC - 20-pin QFN, 3 x 3 mm - 24-pin QSOP - Qualified to AEC-Q100 Standards
Temperature Ranges: - –40 to +125 °C (-Ix) and –40 to +85 °C (-Gx)
Rev. 1.3 1/24
Copyright © 2024 by Silicon Laboratories
C8051F85x/86x
Table of Contents
1. Electrical Specifications............................................................................................ 8 1.1. Electrical Characteristics ..................................................................................... 8
s 1.2. Typical Performance Curves ............................................................................. 19 1.2.1. Operating Supply Current ......................................................................... 19 n 1.2.2. ADC Supply Current.................................................................................. 20 ig 1.2.3. Port I/O Output Drive................................................................................. 21 1.3. Thermal Conditions ........................................................................................... 21
s 1.4. Absolute Maximum Ratings............................................................................... 22
e 2. System Overview ..................................................................................................... 23
2.1. Power ............................................................................................................ 25
D 2.1.1. LDO ....................................................................................................... 25
2.1.2. Voltage Supply Monitor (VMON0)............................................................. 25
w 2.1.3. Device Power Modes ................................................................................ 25
2.2. I/O
............................................................................................................ 26
e 2.2.1. General Features ...................................................................................... 26
N 2.2.2. Crossbar.................................................................................................... 26
2.3. Clocking ............................................................................................................ 27
r 2.4. Counters/Timers and PWM ............................................................................... 27
fo 2.4.1. Programmable Counter Array (PCA0) ...................................................... 27
2.4.2. Timers (Timer 0, Timer 1, Timer 2 and Timer 3) ....................................... 27
2.4.3. Watchdog Timer (WDT0) .......................................................................... 27
d 2.5. Communications and other Digital Peripherals ................................................. 28
e 2.5.1. Universal Asynchronous Receiver/Transmitter (UART0).......................... 28
2.5.2. Serial Peripheral Interface (SPI0) ............................................................. 28
d 2.5.3. System Management Bus / I2C (SMBus0) ............................................... 28
n 2.5.4. 16/32-bit CRC (CRC0) .............................................................................. 28
e 2.6. Analog Peripherals ........................................................................................