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NSP171A

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Nuvoton Tech Audio Interface ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NSP171A

Nuvoton Tech · Audio Interface ICs · SOP-8

NSP171A from Nuvoton Tech, in a SOP-8. 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 BP00 bidirectional General input/output pin, individually settable as input (optional pull-high) or output, shared with ICPCLK and used as SCL for the host 2-I/O protocol.
2 VSS power_in Negative power supply for oscillation, uP and peripherals, tied to ground.
3 VDD power_in Positive power supply, operating range 2.0 to 5.5 V, with 4.7uF and 0.1uF decoupling capacitors placed close to the chip.
4 PWM+ output PWM driver positive output to drive the speaker directly, rated for +250 mA into 8 ohm.
5 PWM- output PWM driver negative output to drive the speaker directly, rated for -250 mA into 8 ohm.
6 VSS_SPK power_in Negative power supply for the speaker driver, connected to ground.
7 /RESET input IC reset input, active low, with a 0.1uF capacitor to ground in the typical application.
8 BP01 bidirectional General input/output pin, individually settable as input (optional pull-high) or output, shared with ICPDATA and used as SDA for the host 2-I/O protocol.

Key specifications

Parameter Value
Manufacturer Nuvoton Tech
Package SOP-8
Category Interface ICs
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Voltage VDD 2 5.5 V 5
Operating Current IOP1 4 6 mA No load 5
Standby Current (STOP) IDD1 1 2 µA No load 5
Input Low Voltage VIL 0 0.3 V All input pins 5
Input High Voltage VIH 0.7 1 V All input pins 5
Output Current BP0, BP1 sink IOL 8 12 mA VDD = 3V, VOUT = 0.4V 5
Output Current BP0, BP1 source IOH -4 -6 mA VDD = 3V, VOUT = 2.6V 5
Output Current BP0, BP1 sink IOL 25 mA VDD = 4.5V, VOUT = 1.0V 5
Output Current BP0, BP1 source IOH -12 mA VDD = 4.5V, VOUT = 3.5V 5
Output Current PWM+/PWM- sink IOL1 250 mA RL= 8Ω 5
Output Current PWM+/PWM- source IOH1 -250 mA RL= 8Ω 5
Frequency Deviation by Voltage Drop ΔF/F 2 % (Fmax, Fmin)/Fmin @VDD: 2.4 ~ 5.5V 5
Oscillator frequency deviation -1.5 1.5 % internal Rosc (TRIM) 3
Power Supply VDD-VSS -0.3 7 V 4
Storage Temp. TSTG -55 150 °C 4
Operating Temp. TOPR -20 85 °C 4

CAD (KiCad official)

  • Symbol: NSP171A
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: nsp171a-etched.step / nsp171a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); nsp171a.step / nsp171a.glb are the bare package body.

Provenance

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

  • Datasheet: Nuvoton Tech datasheet (13 pp, sha256 fb966d59fa3e3401, retrieved 2026-10-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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