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CH552E

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WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), MSOP-10. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs ch552e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers ch552e: viewers · Ray
ch552e-etched.fit.json ch552e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ch552e-etched.glb ch552e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ch552e-etched.step ch552e: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ch552e.glb Publish 0.1.0 · Ray
ch552e.kicad_mod Publish 0.1.0 · Ray
ch552e.kicad_sym Publish 0.1.0 · Ray
ch552e.lbr Publish 0.1.0 · Ray
ch552e.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
page.json ch552e: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md ch552e: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

CH552E

WCH Jiangsu Qin Heng · Microcontrollers (MCU/MPU/SOC) · MSOP-10

CH552E from WCH Jiangsu Qin Heng, in a MSOP-10. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 P1.4/T2_/CAP1_/SCS/TIN2/UCC1/AIN1 bidirectional Port 1 bit 4 general-purpose I/O with internal pull-up by default. Muxed alternate functions: Timer 2 external count input (T2_ inverted mapping), Timer 2 capture 1 input (CAP1_), SPI0 slave chip-select (SCS), Touch-Key channel TIN2 input, USB type-C configuration channel UCC1, and ADC channel AIN1 analog input.
2 P1.5/MOSI/PWM1/TIN3/UCC2/AIN2 bidirectional Port 1 bit 5 general-purpose I/O with internal pull-up by default. Muxed alternate functions: SPI0 MOSI (master output / slave input), PWM1 output, Touch-Key channel TIN3, USB type-C configuration channel UCC2, and ADC channel AIN2 analog input.
3 P1.6/MISO/RXD1/TIN4 bidirectional Port 1 bit 6 general-purpose I/O with internal pull-up by default. Muxed alternate functions: SPI0 MISO (master input / slave output), UART1 serial data receive (RXD1), and Touch-Key channel TIN4.
4 P1.7/SCK/TXD1/TIN5 bidirectional Port 1 bit 7 general-purpose I/O with internal pull-up by default. Muxed alternate functions: SPI0 serial clock (SCK), UART1 serial data transmit (TXD1), and Touch-Key channel TIN5.
5 RST/T2EX/CAP2_ input External reset input, active high. Internal pull-down resistor on RST. Alternate functions: Timer 2 reload / capture trigger input (T2EX) and Timer 2 capture 2 input (CAP2_ alternate mapping).
6 P3.6/UDP bidirectional Port 3 bit 6 general-purpose I/O; alternate function is the USB D+ (UDP) signal. When used as USB, no external series resistor is allowed. P3.6 uses V33 as its I/O supply, so digital high level is limited to V33 and does not support 5V logic.
7 P3.7/UDM bidirectional Port 3 bit 7 general-purpose I/O; alternate function is the USB D− (UDM) signal. When used as USB, no external series resistor is allowed. P3.7 uses V33 as its I/O supply, so digital high level is limited to V33 and does not support 5V logic.
8 GND power_in Common ground (VSS) return for the chip.
9 VCC power_in Main power supply input (VDD), 3.3 V or 5 V. Requires an external 0.1 µF decoupling capacitor to GND placed close to the pin.
10 V33 power_in Internal USB LDO regulator output and internal USB supply input. When VCC < 3.6 V, tie V33 to VCC externally. When VCC > 3.6 V (5 V operation), connect a 0.1 µF decoupling capacitor from V33 to GND and let the internal LDO produce 3.3 V.

Key specifications

Parameter Value
Manufacturer WCH Jiangsu Qin Heng
Package MSOP-10
Category MCU
Pins 10

Ordering variants

Same part, different packaging or reel option.

  • CH552E
  • CH552T
  • CH552G
  • CH552P

CAD (KiCad official)

  • Symbol: CH552E
  • Footprint: Package_SO:MSOP-10_3x3mm_P0.5mm
  • 3D model: MSOP-10 (KiCad packages3D, STEP)
  • 3D model files: ch552e-etched.step / ch552e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ch552e.step / ch552e.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ch552e.step 148 KB You want the bare part, or you mark your own boards.
ch552e-etched.step 1.6 MB You want the part with CH552E already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 389 faces against 177 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: WCH Jiangsu Qin Heng datasheet (53 pp, sha256 b3995c47a6c00a9f, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF