← All parts
CH552
CH552
Microcontroller
CH552 is an 8-bit enhanced USB microcontroller with built-in ADC, PWM, UART, SPI, and USB device controller.
In stock
Specifications
1- Operating Voltage
- 5V or 3.3V or even 2.8V (supply voltage) / V33 (I/O power) - VCC/VDD/VIN/supply: 5V, 3.3V, 2.8V; GND: ground/VSS; V33: 3.3V I/O power; VBUS1/2: USB bus voltage detection input; AIN0-3: ADC analog signal input; UCC1/UCC2: USB type-C bidirectional configuration channel; XI/XO: external crystal oscillation input, inverted input; RXD/TXD: UART serial data input/output; SCS/MOSI/MISO/SCK: SPI interface; PWM1/PWM2: PWM outputs; T0/T1: Timer 0/1 external inputs; UDM/UDP: USB D- and D+ signal terminals; P3.6/P3.7: internally use V33 as I/O power, high level can only reach V33 voltage; RST: built-in pull-down resistor with pull-up resistor in default; T2/T2EX/CAP1/CAP2: Timer/Counter 2 inputs; TIN0-TIN5: touch key capacitance detection input channels; P1.0-P1.7, P3.0-P3.7: GPIO pins; INT0/INT1: external interrupts; TKEY_CTRL/TKEY_DATL/TKEY_DATH: touch-key control and data registers; USB_DEV_AD: USB device address register; UEP4_1_MOD/UEP2_3_MOD/UEP0_DMA_L/UEP0_DMA_H/UEP1_DMA_L/UEP1_DMA_H/UEP2_DMA_L/UEP2_DMA_H/UEP3_DMA_L/UEP3_DMA_H: USB endpoint control and buffer address registers; SPI0 related, ADC related, PWM related, UART related, Timer/Counter 2 related, Port setting related, Flash-ROM related, SFR related - detailed configuration and state registers; ROM_DATA_L/ROM_DATA_H/ROM_ADDR_L/ROM_ADDR_H/ROM_STATUS: flash-ROM data, address, status registers; TCON/TMOD/TL0/TH0/TL1/TH1: timer control and mode registers; PCON/IP/IP_EX/IE/IE_EX/GPIO_IE: power control, interrupt priority, enable, GPIO interrupt enable registers; ADC_CFG/PWM_DATA1/PWM_DATA2/PWM_CTRL/PWM_CK_SE: ADC configuration, PWM data and control registers; SBUF/SBUF1/SBUF1: UART data register; T2MOD/T2CAP1L/T2CAP1H/RCAP2L/RCAP2H/TH2/TL2: timer 2 mode and capture/reload registers; SPI0 related - detailed configuration and state registers; USB related - endpoint control, buffer address, device address, interrupt enable, status registers; ADC related - data and configuration registers; Touch-Key related - touch-key control and data registers; SFR related - special function register table with detailed descriptions of each register's function and reset value.
Pinout
20| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VCC/VDD | POWER | Power input |
| 2 | V33 | POWER | Internal USB power regulator output and input for external power supply when VCC < 3.6V |
| 3 | RST/T2EX_/CAP2_ | GPIO | External reset input, reload/capture input of Timer/Counter 2, capture input 1 of Timer/Counter 2 |
| 4 | GND/VSS | GND | Common ground |
| 5 | P3.6/UDP | GPIO | |
| 6 | P3.7/UDM | GPIO | |
| 7 | VCC/VDD | POWER | Power input |
| 8 | P1.0/T2/CAP1/TIN0 | PWMGPIO | |
| 9 | P3.1/PWM2_/TXD | PWMUART | |
| 10 | P3.0/PWM1_/RXD | PWMUART | |
| 11 | P3.3/INT1 | GPIO | |
| 12 | P3.4/PWM2/RXD1_/T0 | PWMUART | |
| 13 | P3.5/T1 | GPIO | |
| 14 | P3.6/UDP | SPI | |
| 15 | P3.7/UDM | SPI | |
| 16 | VCC/VDD | POWER | Power input |
| 17 | P1.2/XI/RXD_ | UART | |
| 18 | P3.2/TXD1_/INT0/VBUS1/AIN3 | GPIO | |
| 19 | VCC/VDD | POWER | Power input |
| 20 | P1.4/T2_/CAP1_/SCS/TIN2/UCC1/AIN1 | PWMGPIO |
Interactive pinout
Highlight:
CH552
Click a pin to copy its name · tap a tag above to spotlight a bus.