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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

STPM34TR

STMicroelectronics · Energy Metering · QFN-32-EP(5x5)

STPM34TR from STMicroelectronics, in a QFN-32-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	CLKOUT/ZCR	output	Multifunctional output for zero-crossing detector or system clock signal, output voltage 0 to VCC.
2	CLKIN/XTAL2	input	External clock input or crystal oscillator input 2, input voltage 0 to VCC.
3	XTAL1	input	Crystal oscillator input 1, input voltage 0 to VCC.
4	LED1	output	Programmable pulse output 1 for energy metrics or primary current sigma-delta bitstream, output voltage 0 to VCC.
5	LED2	output	Programmable pulse output 2 for energy metrics or secondary current sigma-delta bitstream, output voltage 0 to VCC.
6	INT1	output	Programmable interrupt output 1 or primary voltage sigma-delta bitstream, output voltage 0 to VCC.
7	INT2	output	Programmable interrupt output 2 or secondary voltage sigma-delta bitstream, output voltage 0 to VCC.
8	EN	input	Device enable input pin, input voltage 0 to VCC.
9	VIP1	input	Positive voltage input for primary voltage measurement channel, input range -0.3 V to +0.3 V.
10	VIN1	input	Negative voltage input for primary voltage measurement channel, input range -0.3 V to +0.3 V.
11	IIP1	input	Positive current input for primary current measurement channel, input range -0.3 V to +0.3 V.
12	IIN1	input	Negative current input for primary current measurement channel, input range -0.3 V to +0.3 V.
13	IIN2	input	Negative current input for secondary current measurement channel, input range -0.3 V to +0.3 V.
14	IIP2	input	Positive current input for secondary current measurement channel, input range -0.3 V to +0.3 V.
15	VIN2	input	Negative voltage input for secondary voltage measurement channel, input range -0.3 V to +0.3 V.
16	VIP2	input	Positive voltage input for secondary voltage measurement channel, input range -0.3 V to +0.3 V.
17	VREF1	power_out	Output of voltage reference 1 for primary channel, output voltage 1.16 V to 1.18 V.
18	GND_REF	power_in	Analog ground of voltage reference 1.
19	VREF2	power_out	Output of voltage reference 2 for secondary channel, output voltage 1.16 V to 1.18 V.
20	GNDA	power_in	Analog ground (shield).
21	VDDA	power_out	Output of analog voltage regulator, typical output 3.0 V.
22	GND_REG	power_in	Ground for voltage regulator.
23	VCC	power_in	Voltage supply input, range 3.0 V to 3.6 V.
24	NC	unconnected	Not connected.
25	GNDD	power_in	Digital ground.
26	GNDD	power_in	Digital ground.
27	VDDD	power_out	Output of digital voltage regulator, typical output 1.2 V.
28	SYN	input	Synchronization pin for multi-device coordination or GPIO, input voltage 0 to VCC.
29	SCS	input	SPI chip-select or UART/SPI interface selection pin, input voltage 0 to VCC.
30	SCL	input	SPI clock input, input voltage 0 to VCC.
31	MOSI/RXD	input	SPI master-out-slave-in or UART receive input, input voltage 0 to VCC.
32	MISO/TXD	output	SPI master-in-slave-out or UART transmit output, output voltage 0 to VCC.
33	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	QFN-32-EP(5x5)
Category	Data Acquisition
Pins	33

CAD (KiCad official)

Symbol: STPM34TR
Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
3D model files: stpm34tr-etched.step / stpm34tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stpm34tr.step / stpm34tr.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (122 pp, sha256 fc11ae6e2a323f49, retrieved 2026-10-05, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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