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MRF89XAT-I

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Microchip Tech RF Transceiver ICs, TQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentradio frequency chip-antennamrf89xat-ifactory-2.0.0extractor-text

Verified MRF89XAT-I

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 33 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MRF89XAT-I · TQFN-32-EP(5x5) · 33 pins
  • ✓copper: 33 copper pads, none touching another net
  • ✓datasheet: all 33 pin names found in the 139-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ff6eeb8x/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 33 pins = 33 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 33 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mrf89xat-i.kicad_sym✓ mrf89xat-i.kicad_mod✓ mrf89xat-i.step
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Ray Publish 0.1.0 d234ac1 2d ago

MRF89XAT-I

Microchip Tech · RF Transceiver ICs · TQFN-32-EP(5x5)

MRF89XAT-I from Microchip Tech, in a TQFN-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 TEST5 bidirectional Test pin, connected to Ground during normal operation.
2 TEST1 bidirectional Test pin, connected to Ground during normal operation.
3 VCORS power_out Regulated voltage supply of the VCO (0.85V).
4 VCOTN passive VCO tank connection (negative side; two same-value external inductors required).
5 VCOTP passive VCO tank connection (positive side; two same-value external inductors required).
6 PLLN passive PLL loop filter connection.
7 PLLP passive PLL loop filter connection.
8 TEST6 bidirectional Test pin, connected to Ground during normal operation.
9 TEST7 bidirectional Test pin, connected to Ground during normal operation.
10 OSC1 passive Crystal connection.
11 OSC2 passive Crystal connection.
12 TEST0 input Test pin, connected to Ground during normal operation.
13 TEST8 bidirectional Test pin, allow pin to float; do not connect signal during normal operation.
14 CSCON input SPI configure chip select; has priority over CSDAT.
15 CSDAT input SPI data chip select.
16 SDO tri_state Serial data output from the MRF89XA; driven only when CSCON or CSDAT is low, otherwise High-Z.
17 SDI input Serial data input to the MRF89XA.
18 SCK input SPI serial clock input.
19 CLKOUT output Clock output at reference frequency divided by a programmable factor; disable when unused to minimize current.
20 DATA bidirectional NRZ data input and output in Continuous mode; if unused, pull up to VDD through 100 kΩ.
21 IRQ0 output Interrupt request output to the host microcontroller.
22 IRQ1 output Interrupt request output to the host microcontroller.
23 PLOCK output PLL lock detection output, enabled by the LENPLL bit.
24 TEST2 bidirectional Test pin, connected to Ground during normal operation.
25 TEST3 bidirectional Test pin, connected to Ground during normal operation.
26 VDD power_in Power supply input, 2.1-3.6V.
27 AVRS power_out Regulated supply of the analog circuitry (1.0V).
28 DVRS power_out Regulated supply of the digital circuitry (1.0V).
29 PARS power_out Regulated supply of the PA (1.8V), also output for the PA choke in Transmit mode.
30 TEST4 bidirectional Test pin, connected to Ground during normal operation.
31 RFIO bidirectional RF input/output.
32 NC unconnected No connection; connected to Ground during normal operation.
33 Vss power_in Exposed pad, connected to Ground during normal operation.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFN-32-EP(5x5)
Category Radio Frequency Chip/Antenna
Pins 33

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage (VDD, powers POR, SPI and configuration registers) VDD 2.1 3.6 V VDD pin 26, external supply, Table 2-2 14
Operating temperature range (Industrial) -40 85 °C I = Industrial temperature range 135

CAD (KiCad official)

  • Symbol: MRF89XAT-I
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: TQFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: mrf89xat-i-etched.step / mrf89xat-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mrf89xat-i.step / mrf89xat-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (139 pp, sha256 c971bf0195452e73, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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