STM32L041C6T7 from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	PC0	bidirectional	5 V tolerant I/O (FT) with alternate functions LPTIM1_IN1, EVENTOUT and LPUART1_RX.
2	PC13	bidirectional	5 V tolerant I/O (FT) with the additional function ANTI_TAMP and TAMP1/WKUP2.
3	PC14	bidirectional	Standard 3.3 V I/O (TC) that doubles as the OSC32_IN low-speed oscillator input.
4	PC15	bidirectional	Standard 3.3 V I/O (TC) that doubles as the OSC32_OUT low-speed oscillator output.
5	PH0	bidirectional	Standard 3.3 V I/O (TC) that doubles as the OSC_IN high-speed oscillator input.
6	PH1	bidirectional	Standard 3.3 V I/O (TC) that doubles as the OSC_OUT high-speed oscillator output.
7	NRST	bidirectional	Bidirectional reset pin with embedded weak pull-up resistor.
8	VSSA	power_in	Analog ground pin for the ADC and reference section.
9	VDDA	power_in	Analog supply pin for the ADC and comparators, operating down to 1.65 V as stated in the features.
10	PA0	bidirectional	Standard 3.3 V I/O (TC) with ADC_IN0, COMP1_INM6 and RTC_TAMP2/WKUP1 additional functions.
11	PA1	bidirectional	5 V tolerant I/O (FT) with ADC_IN1 and COMP1_INP additional functions.
12	PA2	bidirectional	Standard 3.3 V I/O (TC) with ADC_IN2, COMP2_INM6 and USART2_TX alternate function.
13	PA3	bidirectional	5 V tolerant I/O (FT) with ADC_IN3, COMP2_INP and USART2_RX alternate function.
14	PA4	bidirectional	Standard 3.3 V I/O (TC) with ADC_IN4 and SPI1_NSS alternate function.
15	PA5	bidirectional	Standard 3.3 V I/O (TC) with ADC_IN5 and SPI1_SCK alternate function.
16	PA6	bidirectional	5 V tolerant I/O (FT) with ADC_IN6 and SPI1_MISO alternate function.
17	PA7	bidirectional	5 V tolerant I/O (FT) with ADC_IN7 and SPI1_MOSI alternate function.
18	PB0	bidirectional	5 V tolerant I/O (FT) with ADC_IN8, VREF_OUT and SPI1_MISO alternate function.
19	PB1	bidirectional	5 V tolerant I/O (FT) with ADC_IN9, VREF_OUT and USART2_CK alternate function.
20	PB2	bidirectional	5 V tolerant I/O (FT) with LPTIM1_OUT alternate function.
21	PB10	bidirectional	5 V tolerant I/O (FT) with TIM2_CH3 and LPUART1_TX alternate functions.
22	PB11	bidirectional	5 V tolerant I/O (FT) with EVENTOUT, TIM2_CH4 and LPUART1_RX alternate functions.
23	VSS	power_in	Digital ground pin of the device.
24	VDD	power_in	Digital supply pin, 1.65 V to 3.6 V.
25	PB12	bidirectional	5 V tolerant I/O (FT) with SPI1_NSS and EVENTOUT alternate functions.
26	PB13	bidirectional	5 V tolerant I/O (FT) with SPI1_SCK, MCO, TIM21_CH1 and LPUART1_CTS alternate functions.
27	PB14	bidirectional	5 V tolerant I/O (FT) with SPI1_MISO, RTC_OUT, TIM21_CH2 and LPUART1_RTS/LPUART1_DE alternate functions.
28	PB15	bidirectional	5 V tolerant I/O (FT) with SPI1_MOSI and RTC_REFIN alternate functions.
29	PA8	bidirectional	5 V tolerant I/O (FT) with MCO, LPTIM1_IN1, EVENTOUT, USART2_CK and TIM2_CH1 alternate functions.
30	PA9	bidirectional	5 V tolerant, Fast-mode Plus capable I/O (FTf) with MCO, I2C1_SCL, USART2_TX and TIM22_CH1 alternate functions.
31	PA10	bidirectional	5 V tolerant, Fast-mode Plus capable I/O (FTf) with I2C1_SDA, USART2_RX and TIM22_CH2 alternate functions.
32	PA11	bidirectional	5 V tolerant I/O (FT) with SPI1_MISO, EVENTOUT, USART2_CTS, TIM21_CH2 and COMP1_OUT alternate functions.
33	PA12	bidirectional	5 V tolerant I/O (FT) with SPI1_MOSI, EVENTOUT, USART2_RTS/USART2_DE and COMP2_OUT alternate functions.
34	PA13	bidirectional	5 V tolerant I/O (FT) with SWDIO serial wire debug data, LPTIM1_ETR and LPUART1_RX alternate functions.
35	VSS	power_in	Digital ground pin of the device.
36	VDD	power_in	Digital supply pin, 1.65 V to 3.6 V.
37	PA14	bidirectional	5 V tolerant I/O (FT) with SWCLK serial wire debug clock, LPTIM1_OUT, I2C1_SMBA, USART2_TX and LPUART1_TX alternate functions.
38	PA15	bidirectional	5 V tolerant I/O (FT) with SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1 alternate functions.
39	PB3	bidirectional	5 V tolerant I/O (FT) with SPI1_SCK, TIM2_CH2 and EVENTOUT alternate functions, plus COMP2_INN.
40	PB4	bidirectional	5 V tolerant I/O (FT) with SPI1_MISO, EVENTOUT and TIM22_CH1 alternate functions, plus COMP2_INP.
41	PB5	bidirectional	5 V tolerant I/O (FT) with SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2 alternate functions, plus COMP2_INP.
42	PB6	bidirectional	5 V tolerant, Fast-mode Plus capable I/O (FTf) with USART2_TX, I2C1_SCL, LPTIM1_ETR and TIM21_CH1 alternate functions.
43	PB7	bidirectional	5 V tolerant, Fast-mode Plus capable I/O (FTf) with USART2_RX, I2C1_SDA and LPTIM1_IN2 alternate functions, plus VREF_PVD_IN.
44	BOOT0	input	Dedicated BOOT0 pin used to select the boot mode.
45	PB8	bidirectional	5 V tolerant, Fast-mode Plus capable I/O (FTf) with I2C1_SCL alternate function.
46	PB9	bidirectional	5 V tolerant, Fast-mode Plus capable I/O (FTf) with EVENTOUT and I2C1_SDA alternate functions.
47	VSS	power_in	Digital ground pin of the device.
48	VDD	power_in	Digital supply pin, 1.65 V to 3.6 V.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	LQFP-48(7x7)
Category	Embedded Processors & Controllers
Pins	48

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
External main supply voltage (VDD-VSS)	VDD-VSS	-0.3		4	V		49
Input voltage on TC pins	VIN	-0.3		4	V		49
Input voltage on any other pin	VIN	-0.3		4	V		49
Total current into sum of all VDD power lines (source)	ΣIVDD			105	mA		50
Total current out of sum of all VSS ground lines (sink)	ΣIVSS			105	mA		50
Maximum current into each VDD power pin (source)	IVDD(PIN)			100	mA		50
Maximum current out of each VSS ground pin (sink)	IVSS(PIN)			100	mA		50
Output current sunk by any I/O and control pin except FTf pins	IIO			16	mA		50
Output current sunk by FTf pins	IIO			22	mA		50
Output current sourced by any I/O and control pin	IIO	-16			mA		50
Storage temperature range	TSTG	-65		150	°C		50
Maximum junction temperature	TJ			150	°C		50
Standard operating voltage VDD	VDD	1.65		3.6	V	BOR detector disabled	51
Standard operating voltage VDD	VDD	1.8		3.6	V	BOR detector enabled, at power on	51
Analog operating voltage (all features)	VDDA	1.65		3.6	V	Must be the same voltage as VDD	51
Internal AHB clock frequency	fHCLK	0		32	MHz		51
Input voltage on FT, FTf and RST pins	VIN	-0.3		5.5	V	2.0 V ≤ VDD ≤ 3.6 V	51
Input voltage on FT, FTf and RST pins	VIN	-0.3		5.2	V	1.65 V ≤ VDD ≤ 2.0 V	51
Input voltage on BOOT0 pin	VIN	0		5.5	V		51
Power dissipation LQFP48 package	PD			351	mW	TA = 85 °C (range 6)	51
Power dissipation LQFP48 package	PD			88	mW	TA = 125 °C (range 3)	51
Temperature range	TA	-40		125	°C	Temperature range 3	52
Junction temperature range	TJ	-40		130	°C	Range 3, -40 °C ≤ TA ≤ 125 °C	52
Power on/power down reset threshold, falling edge	VPOR/PDR	1	1.5	1.65	V	Falling edge	52
Power on/power down reset threshold, rising edge	VPOR/PDR	1.3	1.5	1.65	V	Rising edge	52
Brown-out reset threshold 0, falling edge	VBOR0	1.67	1.7	1.74	V	Falling edge	52
Brown-out reset threshold 0, rising edge	VBOR0	1.69	1.76	1.8	V	Rising edge	52
Programmable voltage detector threshold 0, falling edge	VPVD0	1.8	1.85	1.88	V	Falling edge	53
Internal reference voltage	VREFINT out	1.202	1.224	1.242	V	-40 °C < TJ < +125 °C	54
Temperature coefficient of internal reference voltage	TCoeff		25	100	ppm/°C	-40 °C < TJ < +125 °C	54
Voltage coefficient of internal reference voltage	VDDCoeff			2000	ppm/V	3.0 V < VDDA < 3.6 V	54
1/4 reference voltage	VREFINT_DIV1	24	25	26	%		54
Supply current in Stop mode	IDD (Stop)		0.38	0.99	µA	TA = -40 °C to 25 °C	62
Supply current in Stop mode	IDD (Stop)		7.55	19	µA	TA = 125 °C	62
Supply current in Standby mode, independent watchdog and LSI enabled	IDD (Standby)		0.8	1.6	µA	TA = -40 °C to 25 °C	63
Supply current in Standby mode, independent watchdog and LSI off	IDD (Standby)		1.55	5	µA	TA = 125 °C	63
Supply current in Run mode, code executed from Flash	IDD (Run from Flash)		140	200	µA	Range 3, VCORE=1.2 V, VOS[1:0]=11, 1 MHz	56
Supply current in Run mode, code executed from Flash	IDD (Run from Flash)		5	5.6	mA	Range 1, VCORE=1.8 V, VOS[1:0]=01, 32 MHz	56
Frequency of 16 MHz HSI16 oscillator	fHSI16		16		MHz	VDD = 3.0 V	71
Accuracy of factory-calibrated HSI16 oscillator	ACCHSI16	-5.45		3.25	%	VDDA = 1.65 V to 3.6 V, TA = -40 to 125 °C	71
HSE oscillator frequency	fOSC_IN	1		25	MHz		69
LSE oscillator frequency	fLSE		32.768		kHz		70
LSI frequency	fLSI	26	38	56	kHz		72
LSI oscillator frequency drift	DLSI	-10		4	%	0 °C ≤ TA ≤ 85 °C	72
Frequency error of MSI after factory calibration	ACCMSI	-0.5		0.5	%	After factory calibration	72
Weak pull-up equivalent resistor	RPU	25	45	65	kΩ	VIN = VSS	79
Weak pull-down equivalent resistor	RPD	25	45	65	kΩ	VIN = VDD	79
I/O pin capacitance	CIO		5		pF		79
Output low level voltage for an I/O pin, CMOS port	VOL			0.4	V	IIO = +8 mA, 2.7 V ≤ VDD ≤ 3.6 V	81
Output low level voltage for an I/O pin, TTL port	VOL			0.4	V	IIO = +8 mA, 2.7 V ≤ VDD ≤ 3.6 V	81
Output high level voltage for an I/O pin, TTL port	VOH	2.4			V	IIO = -6 mA, 2.7 V ≤ VDD ≤ 3.6 V	81
Output low level voltage for an I/O pin	VOL			0.45	V	IIO = +4 mA, 1.65 V ≤ VDD < 3.6 V	81
NRST input low level voltage	VIL(NRST)			0.8	V		83
NRST input high level voltage	VIH(NRST)	1.4			V		83
Weak pull-up equivalent resistor on NRST	RPU	25	45	65	kΩ	VIN = VSS	83
Analog supply voltage for ADC on, fast channel	VDDA	1.65		3.6	V	Fast channel	84
Analog supply voltage for ADC on, standard channel	VDDA	1.75		3.6	V	Standard channel	84
ADC clock frequency	fADC	0.14		16	MHz	Voltage scaling Range 1	84
ADC clock frequency	fADC	0.14		8	MHz	Voltage scaling Range 2	84
Programming time for word or half-page, programming	tprog		3.28	3.94	ms		74
Cycling (erase / write) program memory	NCYC	10			kcycles	TA = -40 °C to 105 °C	75

CAD (KiCad official)

Symbol: STM32L041C6T7
Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
3D model files: stm32l041c6t7-etched.step / stm32l041c6t7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32l041c6t7.step / stm32l041c6t7.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (123 pp, sha256 135a63989913af4f, retrieved 2026-11-06, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

STM32L041C6T7

Verified STM32L041C6T7

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README