embedded processors controllers

CH552G

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the CH552G does

The CH552x family comprises 8-bit enhanced E8051 microcontrollers featuring a 24 MHz clock, 16 KB ROM, and 1 KB xRAM. Models include the CH552 with USB, ADC, and touch detection, and the simplified CH551. These devices operate on 3.3 V or 5 V supplies, support USB 2.0 full-speed 12 Mbps, and offer 14 interrupt sources. Engineers typically use them for embedded control, USB peripherals, and industrial automation requiring high instruction density and integrated peripherals like PWM, SPI, and dual UARTs.

Next step
Start building with CH552G → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

Datasheet parameters

Datasheet parameters for CH552G
ParameterMinTypMaxConditionsSource
supply voltage range 3 V — 5 V WCH datasheet, p. 14 — 7.1 外部电源输入
operating temperature (abs max) -40 °C — 85 °C ta; 18.1 绝对最大值(临界或者超过绝对最大值将可能导致芯片工作不正常甚至损坏) WCH datasheet, p. 49 — 18.1 绝对最大值(临界或者超过绝对最大值将可能导致芯片工作不正常甚至损坏)
clock frequency — 24 MHz — WCH datasheet, p. 1
cpu speed — 24 MHz — WCH datasheet, p. 50 — 18、参数
program memory size — 15.6 KB — WCH datasheet, p. 1 — 1、概述
ram size — 1.25 KB — WCH datasheet, p. 1 — 1、概述
io count — 17 — WCH datasheet, p. 2
adc resolution — 8 bit — WCH datasheet, p. 1
core size — 8 bit — WCH datasheet, p. 1
02 — Alternatives

Closest matches to CH552G

ATmega168A 1.3× lower ram size, 1.2× higher adc resolution, 1.2× lower clock frequency
ATmega8A 2.0× lower program memory size, 1.5× lower clock frequency, 1.5× lower cpu speed
CC1110F16RHHR 1.6× higher ram size, 1.4× lower supply voltage range, 1.2× higher adc resolution
MS51FB9AE-T 1.5× higher adc resolution, 1.4× higher operating temperature, 1.3× lower ram size
ATmega328P 2.0× higher program memory size, 1.9× higher operating temperature, 1.6× higher ram size
ATmega32A 2.0× higher program memory size, 1.6× higher ram size, 1.5× lower clock frequency
ATtiny1616 9.6× lower clock frequency, 1.6× higher ram size, 1.4× higher operating temperature
CH32V003F4U6 4.0× higher core size, 2.0× higher clock frequency, 2.0× higher cpu speed
03 — FAQ

Frequently asked questions

What is the ADC resolution of the CH552G?

The ADC resolution is 8 bit.

What is the maximum clock frequency of the CH552G?

The maximum clock frequency is 24 MHz.

What is the core size of the CH552G?

The core size is 8 bit.

What is the CPU speed of the CH552G?

The CPU speed is 24 MHz.

How many I/O pins does the CH552G have?

The CH552G has 17 I/O pins.

What is the operating temperature of the CH552G when ta is 18.1 绝对最大值(临界或者超过绝对最大值将可能导致芯片工作不正常甚至损坏)?

The operating temperature is 85 °C.

What is the program memory size of the CH552G?

The program memory size is 15.6 KB.

What is the RAM size of the CH552G?

The RAM size is 1.25 KB.

What is the supply voltage range for the CH552G?

The supply voltage range is 5 V.

Design help What do I need around the CH552G? →