CH32V307WCU6

32-bit RISC-V Microcontroller

The CH32V307WCU6 is a 32-bit risc-v microcontroller from WCH (WCH-IC). View the full CH32V307WCU6 datasheet below including pinout, electrical characteristics, absolute maximum ratings.

Manufacturer

WCH (WCH-IC)

Overview

Part: CH32V307VCT6 — WCH (WCH-IC)

Type: 32-bit RISC-V Microcontroller

Description: Industrial-grade general-purpose microcontroller based on QingKe RISC-V4F core, operating at up to 144 MHz with 480 KB CodeFlash, up to 128 KB SRAM, and extensive peripherals including USB2.0 high-speed, Gigabit Ethernet, and dual 12-bit ADCs/DACs.

Operating Conditions:

Supply voltage: 3.3V
Operating temperature: -40 to +85 °C
CPU main frequency: Max 144MHz

Absolute Maximum Ratings:

Key Specs:

Core: QingKe 32-bit RISC-V4F
CPU main frequency: Max 144MHz
Program memory (CodeFlash): Up to 480KB (zero-wait + non-zero-wait)
Volatile data storage (SRAM): Up to 128KB
ADC: 2 units, 12-bit, 16 external channels + 2 internal signals
DAC: 2 units, 12-bit
USB: USB2.0 full-speed host/device, USB2.0 high-speed host/device (built-in 480Mbps PHY)
Ethernet: Gigabit Ethernet MAC controller, 10M PHY transceiver

Features:

Single-precision floating-point unit (FPU)
Fast programmable interrupt controller (PFIC)
Multiple low-power modes: Sleep, Stop, Standby
Built-in 8MHz RC oscillator and 40kHz RC oscillator
2 groups of 18-channel general-purpose DMA controllers
4 groups of 16-bit advanced timers for motor control
8 USART interfaces (including 5 UARTs)
2 I2C interfaces (support SMBus/PMBus)
3 SPI interfaces (SPI2, SPI3 for I2S2, I2S3)
2 CAN interfaces (2.0B active)
SDIO host interface
Digital video port (DVP)
FSMC memory interface
80 GPIO ports, mapping 16 external interrupts
CRC unit, 96-bit unique ID
2-wire serial debug interface (SDI)

Applications:

Package:

LQFP100

Pin Configuration

CH32V307VCT6 Pinout

Package: QFN-68 (8×8)

Pin #	Pin Name	Type	Description
1	PE2	I/O	GPIO Port E, Pin 2
2	PE3	I/O	GPIO Port E, Pin 3
3	PE4	I/O	GPIO Port E, Pin 4
4	PE5	I/O	GPIO Port E, Pin 5
5	VBAT	P	Battery Power Supply
6	PC13/TAMPER-RTC	I/O	GPIO Port C, Pin 13 / RTC Tamper
7	PC14/OSC32IN	I/O	GPIO Port C, Pin 14 / 32kHz Oscillator Input
8	PC15/OSC32OUT	I/O	GPIO Port C, Pin 15 / 32kHz Oscillator Output
9	VDD_3	P	Digital Power Supply
10	OSC_IN	I	Main Oscillator Input
11	OSC_OUT	O	Main Oscillator Output
12	NRST	I	Reset (Active Low)
13	PD0/ADC10	I/O	GPIO Port D, Pin 0 / ADC Channel 10
14	PD1/ADC11	I/O	GPIO Port D, Pin 1 / ADC Channel 11
15	PC0/ADC12	I/O	GPIO Port C, Pin 0 / ADC Channel 12
16	PC3/ADC13	I/O	GPIO Port C, Pin 3 / ADC Channel 13
17	VSS	P	Ground
18	VREF-	P	ADC Reference Negative
19	VREF+	P	ADC Reference Positive
20	VDDA	P	Analog Power Supply
21	PA0/WKUP/ADC0	I/O	GPIO Port A, Pin 0 / Wakeup / ADC Channel 0
22	PA1/ADC1	I/O	GPIO Port A, Pin 1 / ADC Channel 1
23	PA2/ADC2	I/O	GPIO Port A, Pin 2 / ADC Channel 2
24	PA3/ADC3	I/O	GPIO Port A, Pin 3 / ADC Channel 3
25	PA4/ADC4	I/O	GPIO Port A, Pin 4 / ADC Channel 4
26	PA5/ADC5	I/O	GPIO Port A, Pin 5 / ADC Channel 5
27	PA6/ADC6	I/O	GPIO Port A, Pin 6 / ADC Channel 6
28	PA7/ADC7	I/O	GPIO Port A, Pin 7 / ADC Channel 7
29	PC4/ADC14	I/O	GPIO Port C, Pin 4 / ADC Channel 14
30	PC5/ADC15	I/O	GPIO Port C, Pin 5 / ADC Channel 15
31	PB0/ADC8	I/O	GPIO Port B, Pin 0 / ADC Channel 8
32	PB1/ADC9	I/O	GPIO Port B, Pin 1 / ADC Channel 9
33	PB2	I/O	GPIO Port B, Pin 2
34	VDD_1	P	Digital Power Supply
35	VSS_1	P	Ground
36	PB10	I/O	GPIO Port B, Pin 10
37	PB11	I/O	GPIO Port B, Pin 11
38	VDD_2	P	Digital Power Supply
39	VSS_2	P	Ground
40	PB12	I/O	GPIO Port B, Pin 12
41	PB13	I/O	GPIO Port B, Pin 13
42	PB14	I/O	GPIO Port B, Pin 14
43	PB15	I/O	GPIO Port B, Pin 15
44	PA8	I/O	GPIO Port A, Pin 8
45	PA9	I/O	GPIO Port A, Pin 9
46	PA10	I/O	GPIO Port A, Pin 10
47	PA11/USB1DM	I/O	GPIO Port A, Pin 11 / USB1 Data Minus
48	PA12/USB1DP	I/O	GPIO Port A, Pin 12 / USB1 Data Plus
49	PA13/SWDIO	I/O	GPIO Port A, Pin 13 / SWD Data I/O
50	VDD_2	P	Digital Power Supply
51	VIO_2	P	I/O Power Supply
52	PA14/SWCLK	I/O	GPIO Port A, Pin 14 / SWD Clock
53	PA15	I/O	GPIO Port A, Pin 15
54	PC6/RXP	I/O	GPIO Port C, Pin 6 / Ethernet RX+
55	PC7/RXN	I/O	GPIO Port C, Pin 7 / Ethernet RX-
56	PD8	I/O	GPIO Port D, Pin 8
57	PD9	I/O	GPIO Port D, Pin 9
58	PD10	I/O	GPIO Port D, Pin 10
59	PD11	I/O	GPIO Port D, Pin 11
60	PD13	I/O	GPIO Port D, Pin 13
61	PD14	I/O	GPIO Port D, Pin 14
62	PD15	I/O	GPIO Port D, Pin 15
63	PC6/RXP	I/O	GPIO Port C, Pin 6 / Ethernet RX+
64	PC7/TXP	I/O	GPIO Port C, Pin 7 / Ethernet TX+
65	PC8/TXP	I/O	GPIO Port C, Pin 8 / Ethernet TX+
66	VSS_3	P	Ground
67	VDD_3	P	Digital Power Supply
68	PE0	I/O	GPIO Port E, Pin 0

Notes

Power pins: VDD (digital), VDDA (analog), VBAT (battery), VIO (I/O supply) are distributed across the package for low-impedance distribution.
Ground pins (VSS): Multiple ground pins distributed for low-impedance return paths.
ADC pins: PA0–PA7, PB0–PB1, PC0, PC3–PC5 provide analog input channels.
Oscillator pins: OSC_IN/OSC_OUT for main clock; PC14/PC15 for 32kHz RTC oscillator.
USB: PA11/PA12 support USB1 interface (DP/DM).
SWD Debug: PA13/PA14 provide SWDIO/SWCLK for serial wire debug.
Ethernet: PC6/PC7 (RX±), PC8/PC7 (TX±) support Ethernet PHY interface.
Reset: NRST is active-low reset input.

Electrical Characteristics

Table 4-41 ADC characteristics

Symbol	Parameter	Condition	Min.	Typ.	Max.	Unit
V DDA	Supply voltage		2.4		3.6	V
V REF+	Positive reference voltage	V REF+ cannot be more thanV DDA	2.4		V DDA	V
I VREF	Reference current			160	220	μA
I DDA	Supply current			480	530	μA
f ADC	ADC clock frequency				14	MHz
f S	Sampling rate		0.05		1	MHz
f TRIG	External trigger frequency				16	1/f ADC
V AIN	Conversion voltage range		0		V REF+	V
R AIN	External input impedance				50	kΩ
R ADC	Sampling switch resistance			0.6	1	kΩ
C ADC	Internal sample and capacitor			8		pF

Table 4-41 ADC characteristics

V3.4 78

CAL	Calibration time	t			1/f ADC
Iat	Injected trigger conversion latency	t		2	1/f ADC
Iatr	Regular trigger conversion latency	t		2	1/f ADC
t s	Sampling time		1.5	239.5	1/f ADC
STAB	Power-on time	t		1	us
CONV	Total conversion time (including sampling time)	t	14	252	1/f ADC

Note: Above parameters are guaranteed by design.

Formula: Maximum RAIN

The above formula is used to determine the maximum external impedance so that the error can be less than 1/4 LSB. Where N=12 (representing 12-bit resolution).

Table 4-42 Maximum RAIN when fADC = 14MHz

T S (cycle) t S (us) Maximum R AIN (kΩ)
1.5 0.11 0.4
7.5 0.54 5.9
13.5 0.96 11.4
28.5 2.04 25.2
41.5 2.96 37.2
55.5 3.96 50
71.5 5.11 Invalid
239.5 17.1 Invalid

Table 4-43 ADC error

Symbol	Parameter	Condition	Typ.	Max.	Unit
EO	Offset error	f PCLK2 = 56MHz,	±4		LSB
ED	Differential nonlinearity error	f ADC = 14MHz,	±0.5	±3	LSB
EL	Integral nonlinearity error	R AIN < 10kΩ,V DDA = 3.3V	±1	±4	LSB

Cp represents the parasitic capacitance on the PCB and the pad (about 5pF), which may be related to the quality of the pad and PCB layout. A larger Cp value will reduce the conversion accuracy, the solution is to reduce the f ADC value.

V3.4 79

Figure 4-29 ADC typical connection diagram

Figure 4-30 Analog power supply and decoupling circuit reference

Absolute Maximum Ratings

Stresses at or above the absolute maximum ratings listed in the table below may cause permanent damage to the device.

Table 4-1 Absolute maximum ratings

Symbol	Description	Description	Min.	Max.	Unit
T A	Ambient temperature during operation	Ambient temperature during operation	-40	85	°C
T S	Ambient temperature during storage	Ambient temperature during storage	-40	125	°C
V DD -V SS	External main supply voltage (includingV DDA and V DD )	External main supply voltage (includingV DDA and V DD )	-0.3	4.0	V
V I/O -V SS	I/O supply voltage	I/O supply voltage	-0.3	4.0	V
V DD_ETH -V SS	Internal 10/100M Ethernet PHY supply voltage	CH32V317	-0.3	4.0	V
V DDK	Voltage at decoupling end of internal power supply LDO	CH32V317	-0.2	1.5	V
V IN	Input voltage on the FT (5V tolerance) pin	Input voltage on the FT (5V tolerance) pin	V SS -0.3	5.5	V
V IN	10/100M Ethernet PHY differential pin	V SS -0.3	V DD_ETH +0.3	V	V
V IN	Input voltage onPHY pin of USB and 10M Ethernet	Input voltage onPHY pin of USB and 10M Ethernet	V SS -0.3	V DD +0.3	V
V IN	Input voltage on other pins	Input voltage on other pins	V SS -0.3	V IO +0.3	V
\	△ V DD_x \		Variations between different main power supply pins	Variations between different main power supply pins
\	△ V I/O_x \		Variations between different I/O power supply pins	Variations between different I/O power supply pins
\	△ V SS_x \		Variations between different ground pins	Variations between different ground pins
V ESD(HBM)	Electrostatic discharge voltage (HBM, non-contact)	Electrostatic discharge voltage (HBM, non-contact)	4K	4K	V
V ESD(HBM)	USB pins (PA11, PA12)	USB pins (PA11, PA12)	3K	3K	V

Table 4-1 Absolute maximum ratings

V3.4 51

I VDD	Total current intoV DD /V DDA /V IO power lines (source)	150	mA
I Vss	Total current out ofV SS ground lines (sink)	150	mA
I I/O	Sink current on any I/O and control pin	25	mA
I I/O	Source current on any I/O and control pin	-25	mA
I INJ(PIN)	Injected current on NRST pin	+/-5	mA
I INJ(PIN)	Injected current on HSE's OSC_IN pin and LSE's OSC_IN pin	+/-5	mA
I INJ(PIN)	Injected current on other pins	+/-5	mA
∑I INJ(PIN)	Total injected current on all I/Os and control pins	+/-25	mA

Ordering Information

No ordering information table or specific ordering codes were found in the provided datasheet section. The section only mentions the TSSOP20 package type in the context of a figure.

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
CH32V303	WCH	—
CH32V305	WCH	—
CH32V307	WCH	TSSOP20
CH32V307/317	WCH (WCH-IC)	—
CH32V307RCT6	WCH (WCH-IC)	LQFP-64M(10x10)
CH32V307VCT6	WCH (WCH-IC)	LQFP-100(14x14)
CH32V30X	WCH	—
CH32V317	WCH	—

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