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STPM34TR

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STMicroelectronics Energy Metering, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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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