C8051F991-C-GMR

$1.45

Description：IC MCU 8BIT 8KB FLASH 20QFN
Series：C8051F9xx
Mfr：Silicon Labs
Package：Tape & Reel (TR)
Core Processor：CIP-51 8051

SKU:f87261a454d0 Category: Microcontrollers Brand: Silicon Labs

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Product introduction

Product Detailed Parameters

Description：IC MCU 8BIT 8KB FLASH 20QFN
Series：C8051F9xx
Mfr：Silicon Labs
Package：Tape & Reel (TR)
Core Processor：CIP-51 8051
Core Size：8-Bit
Speed：25MHz
Connectivity：SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals：Brown-out Detect/Reset, Cap Sense, POR, PWM, WDT
Number of I/O：16
Program Memory Size：8KB (8K x 8)
Program Memory Type：FLASH
EEPROM Size：-
RAM Size：512 x 8
Voltage - Supply (Vcc/Vdd)：1.8V ~ 3.6V
Data Converters：-
Oscillator Type：Internal
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Supplier Device Package：20-QFN (3x3)
Package / Case：20-UFQFN Exposed Pad

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C8051F991-C-GMR

Overview

The C8051F991-C-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core operating at up to 25MHz. It integrates 8KB of Flash program memory and 512 bytes of RAM within a 20-QFN (3x3) package. The device supports a supply voltage range of 1.8V to 3.6V and includes SMBus, SPI, and UART/USART interfaces. It operates between -40°C and +85°C.

Feature Summary

Integrates a high-performance 8-bit CIP-51 core with internal oscillator for efficient code execution.
Includes on-chip non-volatile Flash memory and static RAM for data storage and processing.
Provides versatile digital communication capabilities via SMBus, SPI, and UART/USART peripherals.
Features low-voltage operation suitable for battery-powered or energy-constrained embedded systems.

Applications

Battery-operated sensor nodes
Low-power industrial control modules
Simple serial communication gateways

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature grade (-40°C to +85°C) as per the official datasheet. Confirm the package marking and pinout match the 20-QFN (3x3) specification. Ensure compatibility with existing firmware compiled for the CIP-51 architecture before integration into production designs.

Selection Notes

Select this component when an 8-bit MCU with minimal peripheral count is required. It is suitable for applications needing basic serial connectivity without analog-to-digital conversion. Compare against other C8051F9xx variants if larger memory or additional I/O pins are necessary for the specific design constraints.

Part Context

This part belongs to the C8051F9xx family of mixed-signal system-on-chip microcontrollers. These devices are designed for cost-sensitive applications requiring a balance of processing power and peripheral integration. The C8051F991 variant specifically targets simple control tasks with limited memory requirements.

FAQ

Does the C8051F991-C-GMR include an integrated ADC?

No, the C8051F991-C-GMR does not include an Analog-to-Digital Converter (ADC). Users requiring signal digitization should select a different model from the C8051F9xx series that includes ADC functionality.