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STPM32TR

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STMicroelectronics Energy Metering, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STPM32TR

STMicroelectronics · Energy Metering · QFN-24-EP(4x4)

STPM32TR from STMicroelectronics, in a QFN-24-EP(4x4). 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 Zero-crossing output or system clock output (configurable), voltage 0 to VCC.
2 CLKIN/XTAL2 input External clock input or crystal oscillator 2 input, voltage 0 to VCC.
3 XTAL1 input Crystal oscillator 1 input, voltage 0 to VCC.
4 LED1 output Programmable pulse output 1 for energy pulses or sigma-delta bitstream, voltage 0 to VCC.
5 LED2 output Programmable pulse output 2 for energy pulses or sigma-delta bitstream, voltage 0 to VCC.
6 INT1 output Programmable interrupt 1 output or sigma-delta bitstream output, voltage 0 to VCC.
7 EN input Enable pin for device operation control, voltage 0 to VCC.
8 VIP1 input Positive voltage input for primary channel measurement, voltage -0.3 V to 0.3 V.
9 VIN1 input Negative voltage input for primary channel measurement, voltage -0.3 V to 0.3 V.
10 IIP1 input Positive current input for primary channel measurement, voltage -0.3 V to 0.3 V.
11 IIN1 input Negative current input for primary channel measurement, voltage -0.3 V to 0.3 V.
12 VREF1 power_out Voltage reference 1 output from internal bandgap reference, voltage 1.16 V to 1.18 V.
13 GND_REF power_in Analog ground reference for voltage reference 1.
14 GNDA power_in Analog ground (shield) for analog measurement circuits.
15 VDDA power_out Analog power supply regulator output, 3.0 V typical.
16 GND_REG power_in Ground reference for internal regulators and digital circuits.
17 VCC power_in Main supply voltage input, voltage range 3.0 V to 3.6 V.
18 GNDD power_in Digital ground.
19 VDDD power_out Digital power supply regulator output, 1.2 V typical.
20 SYN input Synchronization pin for pulse generation or measurement register latching, voltage 0 to VCC.
21 SCS input Chip-select pin for SPI interface or interface mode selection at power-up, voltage 0 to VCC.
22 SCL input SPI serial clock input, voltage 0 to VCC.
23 MOSI/RXD input SPI master-out-slave-in data input or UART receive data input, voltage 0 to VCC.
24 MISO/TXD output SPI master-in-slave-out data output or UART transmit data output, voltage 0 to VCC.
25 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package QFN-24-EP(4x4)
Category Data Acquisition
Pins 25

CAD (KiCad official)

  • Symbol: STPM32TR
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: stpm32tr-etched.step / stpm32tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stpm32tr.step / stpm32tr.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 2026-10-07, 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