CH552E

WCH (Nanjing Qinheng Microelectronics)

16KB 24MHz 3.3V~5V 51 Family 8bit FLASH MSOP-10 Microcontrollers (MCU/MPU/SOC) ROHS

Extended

Category: Microcontrollers (MCU, MPU, SOC)
Package: MSOP-10
Pins: 10

Overview

The CH552E is a microcontroller made by WCH (Nanjing Qinheng Microelectronics) in a MSOP-10 package with 10 pins. 16KB 24MHz 3.3V~5V 51 Family 8bit FLASH MSOP-10 Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH552E, from EasyEDA) and its footprint (Package_SO:MSOP-10_3x3mm_P0.5mm, from KiCad's library), ready for a KiCad board. 9,419 are in stock at JLCPCB (part C967938). 13 open-source boards in 9 repositories on GitHub use it.

Symbol

EasyEDA_Cloud:CH552EFrom EasyEDA

Footprint

Package_SO:MSOP-10_3x3mm_P0.5mmFrom KiCad's library

From the datasheet

Supply, least: 3.7 V · VCC, minimum for 5 V operation, V33 capacitor only · p. 49
Supply, most: 5.5 V · VCC, maximum for 5 V operation, V33 capacitor only · p. 49
Supply, least: 3 V · VCC, minimum with V33 tied to VCC and USB enabled · p. 49
Supply, most: 3.6 V · VCC, maximum with V33 tied to VCC and USB enabled · p. 49
Supply, least: 2.8 V · VCC, minimum with V33 tied to VCC and USB disabled · p. 49
Supply, absolute maximum: 5.8 V · VCC, absolute maximum · p. 49
Works from: -40 °C · Operating ambient temperature, min · p. 49
Works up to: 85 °C · Operating ambient temperature, max · p. 49
Takes working: 11 mA · Typical total supply current, Fsys=24MHz, VCC=5V, TA=25℃ · p. 49
Takes working: 5 mA · Typical total supply current, Fsys=12MHz, VCC=V33=3.3V, TA=25℃ · p. 49
Takes asleep: 100 µA · Typical sleep total supply current, VCC=5V, TA=25℃ · p. 49
Takes asleep: 8 µA · Typical full sleep current, VCC=V33=5V, external crystal, LDO disabled · p. 49
Takes asleep: 70 µA · Typical sleep total supply current, VCC=V33=3.3V, TA=25℃ · p. 49

What it is and has

Core: Enhanced E8051, compatible with MCS51 instruction set · p. 1
Maximum system clock: 24MHz · p. 1
Program ROM: 16K · p. 1
Internal iRAM: 256 bytes · p. 1
Internal xRAM: 1K bytes, DMA supported · p. 1
Timers: 3 groups, signal capture and PWM · p. 1
UART: 2 · p. 1
ADC: Integrated analog-to-digital conversion · p. 1
Touch sensing: Capacitive touch-key detection · p. 1
SPI: Integrated SPI · p. 1
USB: Device controller and full-speed transceiver · p. 1

Specifications

Parameter	Conditions	As printed	Page
工作时的环境温度 TA		min -40 · max 85 ℃	49
储存时的环境温度 TS		min -55 · max 125 ℃	49
电源电压 VCC	VCC 接电源，GND 接地	min -0.4 · max 5.8 V	49
除 P3.6/P3.7 之外其它输入或者输出引脚上的电压 VIO		min -0.4 V	49
P3.6/P3.7 输入或者输出引脚上的电压 VIOU		min -0.4 V	49
VCC 引脚电源电压 VCC5	TA=25℃，V33 仅外接电容	min 3.7 · typ 5 · max 5.5 V	49
内部 USB 电源调整器输出电压 V33	TA=25℃，VCC=5V，Fsys=6MHz	min 3.14 · typ 3.27 · max 3.4 V	49
工作时的总电源电流 ICC24M5	TA=25℃，VCC=5V，Fsys=24MHz	min 8 · typ 11 mA	49
工作时的总电源电流 ICC6M5	TA=25℃，VCC=5V，Fsys=6MHz	min 4 · typ 6 mA	49
工作时的总电源电流 ICC750K5	TA=25℃，VCC=5V，Fsys=750KHz	min 2 · typ 3 mA	49
睡眠后的总电源电流 ISLP5	TA=25℃，VCC=5V	typ 0.1 · max 0.2 mA	49
完全睡眠后的总电源电流 ISLP5L	TA=25℃，VCC=V33=5V，且选用外部晶体时钟，且 bLDO3V3_OFF=1 关闭 LDO	typ 0.008 · max 0.025 mA	49
ADC 模数转换模块工作电流 IADC5	TA=25℃，VCC=5V，Fsys=6MHz	typ 200 · max 800 uA	49
电压比较器模块工作电流 ICMP5	TA=25℃，VCC=5V，Fsys=6MHz	typ 100 · max 500 uA	49
触摸按键电容检测模块工作电流 ITKEY5	TA=25℃，VCC=5V，Fsys=6MHz	typ 150 · max 250 uA	49
低电平输入电压 VIL5	TA=25℃，VCC=5V，Fsys=6MHz	min -0.4 · max 1.2 V	49
高电平输入电压 VIH5	TA=25℃，VCC=5V，Fsys=6MHz	min 2.4 V	49
低电平输出电压 VOL5	TA=25℃，VCC=5V，Fsys=6MHz，12mA 吸入电流	max 0.4 V	49
无上拉输入端的输入电流 IIN	TA=25℃，VCC=5V，Fsys=6MHz	min -5 · typ 0 · max 5 uA	49
带下拉电阻输入端的输入电流 IDN5	TA=25℃，VCC=5V，Fsys=6MHz	min -35 · typ -70 · max -140 uA	49
带上拉电阻输入端的输入电流 IUP5	TA=25℃，VCC=5V，Fsys=6MHz	min 35 · typ 70 · max 140 uA	49
带上拉输入端由低向高翻转时的输入电流 IUP5X	TA=25℃，VCC=5V，Fsys=6MHz	min 250 · typ 400 · max 600 uA	49
电源上电复位的门限电压 Vpot	TA=25℃，Fsys=6MHz	min 2.1 · typ 2.3 · max 2.5 V	49
VCC 引脚电源电压 VCC3	TA=25℃，V33 短接到 VCC，开启 USB	min 3 · typ 3.3 · max 3.6 V	49
VCC 引脚电源电压 VCC3	TA=25℃，V33 短接到 VCC，关闭 USB	min 2.8 · typ 3.3 · max 3.6 V	49
工作时的总电源电流 ICC12M3	TA=25℃，VCC=V33=3.3V，Fsys=12MHz	min 3 · typ 5 mA	49
工作时的总电源电流 ICC6M3	TA=25℃，VCC=V33=3.3V，Fsys=6MHz	min 2 · typ 4 mA	49
工作时的总电源电流 ICC750K3	TA=25℃，VCC=V33=3.3V，Fsys=750KHz	min 1 · typ 2 mA	49
睡眠后的总电源电流 ISLP3	TA=25℃，VCC=V33=3.3V	typ 0.07 · max 0.15 mA	49

Parameters

ADC (Bit): 8bit
CPU Core: 51 Series
CPU Maximum Speed: 24MHz
Core Size: 8 Bit
Current - Supply: 11mA
Features: Integrated LDO
Operating Temperature: -40℃~+85℃
Oscillator Type: Built-in+External
Program Memory Type: FLASH
Program Storage Size: 16KB
RAM Size: 1.25KB
Standby Current: 100uA
Voltage - Supply: 2.8V~5.5V
Voltage - Supply(Absolute Max): 5.8V

Order codes

CH552ELCSC C967938

Pinout

The pins of the CH552E
Pin	Name	Type
1	P1.4/T2_/CAP1_/SCS/TIN2/UCC1/AIN1	Unspecified
2	P1.5/MOSI/PWM1/TIN3/UCC2/AIN2	Unspecified
3	P1.6/MISO/RXD1/TIN4	Unspecified
4	P1.7/SCK/TXD1/TIN5	Unspecified
5	RST/T2EX_/CAP2_	Unspecified
6	P3.6/UDP	Unspecified
7	P3.7/UDM	Unspecified
8	GND/VSS	Unspecified
9	VCC/VDD	Unspecified
10	V33	Unspecified

Open-source boards using it

All 13

2 layers19 × 19 mm
Snowflake
acornitum/snowflake
one key macropad w/ ch552e!!
21 parts9
2 layers88.9 × 50.8 mm
DogeKey2
acamilo/pcb-artwork-project
Collection of graphical PCBs containing memes, logos of youtube channels i watch, among other things.
23 parts1
2 layers32.9 × 49.6 mm
MBusCH55x
jmysu/mBusCH55x
An affordable USB-CDC dev board.
50 parts1GPL-3.0
2 layers26.8 × 10 mm
Ppk
wojtekka/ppk
Palm™ Portable Keyboard USB adapter
13 parts1
2 layers83 × 58 mm
Tk1
kr-Eliza/tkey-open-hardware-reproduction
Reproducing the Tillitis TKey open hardware security key: 2-layer hand-solderable PCB, lab assembly and bring-up, Voltera prototype, SBOM
67 partsCERN-OHL-S-2.0
2 layers88 × 92 mm
Ch552-daplink vcut
Netetra/kicad-archive

672 parts
2 layers
USBPW
nilslmm/ch552e
A simple PCB for the ch552e
12 parts
2 layers49 × 35.6 mm
CH552E2x2
VycoV/2x2-Macro
2x2 Macropad with a CH552E
21 partsMIT

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A picture

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A picture that opens the part, for a README

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Questions

Is there a KiCad symbol and footprint for the CH552E?

Yes. The symbol is EasyEDA_Cloud:CH552E and the footprint Package_SO:MSOP-10_3x3mm_P0.5mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH552E?

MSOP-10, with 10 pins. Its footprint is drawn on this page.

Where is the CH552E datasheet?

WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.

Where can I order the CH552E?

JLCPCB lists it as part C967938, with 9,419 in stock; the sellers' links on this page open their listings.

What can replace the CH552E?

Parts like it in the library: the CH554E by WCH (Nanjing Qinheng Microelectronics), the ML51BB9AE by Nuvoton Tech, the MS51BA9AE by Nuvoton Tech and the BS84B04C-10MSOP by Holtek Semicon. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the CH552E?

13 boards in 9 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

CH552E

Overview

Symbol

Footprint

From the datasheet

What it is and has

Specifications

Parameters

Order codes

Pinout

Open-source boards using it

Snowflake

DogeKey2

MBusCH55x

Ppk

Tk1

Ch552-daplink vcut

USBPW

CH552E2x2

Show this part on your page

Questions

Is there a KiCad symbol and footprint for the CH552E?

What package is the CH552E?

Where is the CH552E datasheet?

Where can I order the CH552E?

What can replace the CH552E?

Which open-source boards use the CH552E?

Parts like it

CH554E

ML51BB9AE

MS51BA9AE

BS84B04C-10MSOP

HT48R002-10MSOP

HT66F2030-10MSOP

HT66F2040-10MSOP

HT66F2050-10MSOP