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CKS32F103RBT6

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by Ray

CKS Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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CKS32F103RBT6

CKS · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)

CKS32F103RBT6 from CKS, in a LQFP-64(10x10). 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 VBAT power_in Backup battery input, 1.8-3.6V. Powers RTC, LSE oscillator and backup registers when VDD is off.
2 PC13-TAMPER-RTC bidirectional GPIO Port C bit 13; alt-function TAMPER input and RTC output. Backup-domain supplied via power switch, limited to 3mA / 2MHz / 30pF; not suitable for current-sourcing.
3 PC14-OSC32_IN bidirectional GPIO Port C bit 14 / 32.768 kHz LSE crystal input. Backup-domain supplied; drive limited to 3mA / 2MHz / 30pF.
4 PC15-OSC32_OUT bidirectional GPIO Port C bit 15 / 32.768 kHz LSE crystal output. Backup-domain supplied; drive limited to 3mA / 2MHz / 30pF.
5 OSC_IN/PD0 input HSE crystal input (default after reset). Software-remappable to GPIO PD0.
6 OSC_OUT/PD1 output HSE crystal output (default after reset). Software-remappable to GPIO PD1.
7 NRST bidirectional Bidirectional active-low reset. Internal weak pull-up; drive low to reset MCU.
8 PC0 bidirectional GPIO Port C bit 0; alt-function ADC12_IN10.
9 PC1 bidirectional GPIO Port C bit 1; alt-function ADC12_IN11.
10 PC2 bidirectional GPIO Port C bit 2; alt-function ADC12_IN12.
11 PC3 bidirectional GPIO Port C bit 3; alt-function ADC12_IN13.
12 VSSA power_in Analog ground reference for ADC and VREF. Also the internal VREF- on LQFP64.
13 VDDA power_in Analog supply, 2.0-3.6V. Also the internal VREF+ on LQFP64.
14 PA0-WKUP bidirectional GPIO Port A bit 0; alt WKUP wake-from-Standby / USART2_CTS / ADC12_IN0 / TIM2_CH1_ETR.
15 PA1 bidirectional GPIO Port A bit 1; alt USART2_RTS / ADC12_IN1 / TIM2_CH2.
16 PA2 bidirectional GPIO Port A bit 2; alt USART2_TX / ADC12_IN2 / TIM2_CH3.
17 PA3 bidirectional GPIO Port A bit 3; alt USART2_RX / ADC12_IN3 / TIM2_CH4.
18 VSS_4 power_in Digital ground.
19 VDD_4 power_in Digital supply, 2.0-3.6V.
20 PA4 bidirectional GPIO Port A bit 4; alt SPI1_NSS / USART2_CK / ADC12_IN4.
21 PA5 bidirectional GPIO Port A bit 5; alt SPI1_SCK / ADC12_IN5.
22 PA6 bidirectional GPIO Port A bit 6; alt SPI1_MISO / ADC12_IN6 / TIM3_CH1 / TIM1_BKIN.
23 PA7 bidirectional GPIO Port A bit 7; alt SPI1_MOSI / ADC12_IN7 / TIM3_CH2 / TIM1_CH1N.
24 PC4 bidirectional GPIO Port C bit 4; alt ADC12_IN14.
25 PC5 bidirectional GPIO Port C bit 5; alt ADC12_IN15.
26 PB0 bidirectional GPIO Port B bit 0; alt ADC12_IN8 / TIM3_CH3 / TIM1_CH2N.
27 PB1 bidirectional GPIO Port B bit 1; alt ADC12_IN9 / TIM3_CH4 / TIM1_CH3N.
28 PB2/BOOT1 bidirectional GPIO Port B bit 2; also BOOT1 boot-mode select strap sampled at reset. 5V-tolerant (FT).
29 PB10 bidirectional GPIO Port B bit 10; alt I2C2_SCL / USART3_TX / TIM2_CH3. 5V-tolerant.
30 PB11 bidirectional GPIO Port B bit 11; alt I2C2_SDA / USART3_RX / TIM2_CH4. 5V-tolerant.
31 VSS_1 power_in Digital ground.
32 VDD_1 power_in Digital supply, 2.0-3.6V.
33 PB12 bidirectional GPIO Port B bit 12; alt SPI2_NSS / I2C2_SMBAI / USART3_CK / TIM1_BKIN. 5V-tolerant.
34 PB13 bidirectional GPIO Port B bit 13; alt SPI2_SCK / USART3_CTS / TIM1_CH1N. 5V-tolerant.
35 PB14 bidirectional GPIO Port B bit 14; alt SPI2_MISO / USART3_RTS / TIM1_CH2N. 5V-tolerant.
36 PB15 bidirectional GPIO Port B bit 15; alt SPI2_MOSI / TIM1_CH3N. 5V-tolerant.
37 PC6 bidirectional GPIO Port C bit 6; alt TIM3_CH1. 5V-tolerant.
38 PC7 bidirectional GPIO Port C bit 7; alt TIM3_CH2. 5V-tolerant.
39 PC8 bidirectional GPIO Port C bit 8; alt TIM3_CH3. 5V-tolerant.
40 PC9 bidirectional GPIO Port C bit 9; alt TIM3_CH4. 5V-tolerant.
41 PA8 bidirectional GPIO Port A bit 8; alt USART1_CK / TIM1_CH1 / MCO. 5V-tolerant.
42 PA9 bidirectional GPIO Port A bit 9; alt USART1_TX / TIM1_CH2. 5V-tolerant.
43 PA10 bidirectional GPIO Port A bit 10; alt USART1_RX / TIM1_CH3. 5V-tolerant.
44 PA11 bidirectional GPIO Port A bit 11; alt USART1_CTS / USBDM / CANRX / TIM1_CH4. 5V-tolerant.
45 PA12 bidirectional GPIO Port A bit 12; alt USART1_RTS / USBDP / CANTX / TIM1_ETR. 5V-tolerant.
46 PA13 bidirectional GPIO Port A bit 13; default JTMS/SWDIO after reset. 5V-tolerant.
47 VSS_2 power_in Digital ground.
48 VDD_2 power_in Digital supply, 2.0-3.6V.
49 PA14 bidirectional GPIO Port A bit 14; default JTCK/SWCLK after reset. 5V-tolerant.
50 PA15 bidirectional GPIO Port A bit 15; default JTDI after reset. Alt TIM2_CH1_ETR / PA15 / SPI1_NSS. 5V-tolerant.
51 PC10 bidirectional GPIO Port C bit 10; alt USART3_TX. 5V-tolerant.
52 PC11 bidirectional GPIO Port C bit 11; alt USART3_RX. 5V-tolerant.
53 PC12 bidirectional GPIO Port C bit 12; alt USART3_CK. 5V-tolerant.
54 PD2 bidirectional GPIO Port D bit 2; alt TIM3_ETR. 5V-tolerant.
55 PB3 bidirectional GPIO Port B bit 3; default JTDO after reset. Alt PB3/TRACESWO/TIM2_CH2/SPI1_SCK. 5V-tolerant.
56 PB4 bidirectional GPIO Port B bit 4; default JNTRST after reset. Alt PB4/TIM3_CH1/SPI1_MISO. 5V-tolerant.
57 PB5 bidirectional GPIO Port B bit 5; alt I2C1_SMBAI / TIM3_CH2 / SPI1_MOSI. Not 5V-tolerant.
58 PB6 bidirectional GPIO Port B bit 6; alt I2C1_SCL / TIM4_CH1 / USART1_TX. 5V-tolerant.
59 PB7 bidirectional GPIO Port B bit 7; alt I2C1_SDA / TIM4_CH2 / USART1_RX. 5V-tolerant.
60 BOOT0 input Boot-mode select strap sampled at reset. Combined with BOOT1 (PB2) selects boot from main Flash, system memory (bootloader), or SRAM.
61 PB8 bidirectional GPIO Port B bit 8; alt I2C1_SCL / TIM4_CH3 / CANRX. 5V-tolerant.
62 PB9 bidirectional GPIO Port B bit 9; alt I2C1_SDA / TIM4_CH4 / CANTX. 5V-tolerant.
63 VSS_3 power_in Digital ground.
64 VDD_3 power_in Digital supply, 2.0-3.6V.

Key specifications

Parameter Value
Manufacturer CKS
Package LQFP-64(10x10)
Category MCU
Pins 64

Ordering variants

Same part, different packaging or reel option.

  • CKS32F103RBT6R8T6
  • CKS32F103RBT6
  • CKS32F103RBT6RBT7
  • CKS32F103RBT6C8T6
  • CKS32F103RBT6CBT6
  • CKS32F103RBT6VBT6

CAD (KiCad official)

  • Symbol: CKS32F103RBT6
  • Footprint: Package_QFP:LQFP-64_10x10mm_P0.5mm
  • 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: CKS datasheet (64 pp, sha256 221001e6207f4f99, 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