
CH554E
WCH (Nanjing Qinheng Microelectronics)Extended
16KB 24MHz 3.3V~5V 51 Family 8bit FLASH MSOP-10 Microcontrollers (MCU/MPU/SOC) ROHS
- Part id
- wch/CH554E
- Category
- Microcontrollers (MCU, MPU, SOC)
- Package
- MSOP-10
- Pins
- 10
- In stock
- 545 at JLCPCB (C111293)
- Used on
- 1 open-source board
Overview
The CH554E 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. 545 are in stock at JLCPCB (part C111293). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Pinout
10| 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
1- 2 layers25 × 21 mm

Parts like it
8CH552E
MSOP-1016KB 24MHz 3.3V~5V 51 Family 8bit FLASH MSOP-10 Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)ML51BB9AE
MSOP-10-40℃~+105℃ 1.8V~5.5V 12bit 16KB 1KB 24MHz 51 Series 7 8 Bit Built-in FLASH MSOP-10 Microcontrollers (MCU/MPU/SOC) ROHSNuvoton TechMicrocontrollers (MCU/MPU/SOC)MS51BA9AE
MSOP-10(3x3)-40℃~+105℃ 1KB 2.4V~5.5V 24MHz 51 Series 8 8 Bit 8KB Built-in FLASH MSOP-10(3x3) Microcontrollers (MCU/MPU/SOC) ROHSNuvoton TechMicrocontrollers (MCU/MPU/SOC)BS84B04C-10MSOP
MSOP-10Microcontrollers (MCU/MPU/SOC)Holtek SemiconHT48R002-10MSOP
MSOP-10Microcontrollers (MCU/MPU/SOC)Holtek SemiconHT66F2030-10MSOP
MSOP-10Microcontrollers (MCU/MPU/SOC)Holtek SemiconHT66F2040-10MSOP
MSOP-10Microcontrollers (MCU/MPU/SOC)Holtek SemiconHT66F2050-10MSOP
MSOP-10Microcontrollers (MCU/MPU/SOC)Holtek Semicon
Questions
Is there a KiCad symbol and footprint for the CH554E?
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 CH554E?
MSOP-10, with 10 pins. Its footprint is drawn on this page.
Where is the CH554E datasheet?
WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.
Where can I order the CH554E?
JLCPCB lists it as part C111293, with 545 in stock; the sellers' links on this page open their listings.
What can replace the CH554E?
Parts like it in the library: the CH552E 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 CH554E?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.