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HC89S105AK8T7CM

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by Ray

Shanghai Holychip Elec Microcontroller Units (MCUs/MPUs/SOCs), LQFP-32(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentsingle chip microcomputer-microcontrollerhc89s105ak8t7cm
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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HC89S105AK8T7CM

Shanghai Holychip Elec · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-32(7x7)

HC89S105AK8T7CM from Shanghai Holychip Elec, in a LQFP-32(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 P3.7/INT7/SCK bidirectional GPIO P3.7. Alt: external interrupt INT7 input; two-wire ISP/debug clock input (SCK).
2 P5.4/XOUT bidirectional GPIO P5.4. Alt: external crystal oscillator output XOUT (analog).
3 P5.5/XIN bidirectional GPIO P5.5. Alt: external crystal oscillator input XIN (analog); supports 4-24 MHz HF crystal or 32.768 kHz LF crystal.
4 GND power_in Ground (power return).
5 P4.1/RST bidirectional External reset input (active low, Schmitt with pull-up) by factory default on the LQFP32 variant; may be reconfigured via code option as ordinary GPIO P4.1.
6 VDD power_in Main supply input. Operating range 2.0-5.5 V. Decouple to GND with ≥0.1 µF close to the pin.
7 P2.1/ADC9/INT9/TCK bidirectional GPIO P2.1. Alt: 12-bit ADC channel 9 (analog); external interrupt INT9; JTAG TCK clock input.
8 P2.2/ADC10/INT10/TDI bidirectional GPIO P2.2. Alt: ADC channel 10 (analog); external interrupt INT10; JTAG TDI data input.
9 P2.3/ADC11/INT11/TMS bidirectional GPIO P2.3. Alt: ADC channel 11 (analog); external interrupt INT11; JTAG TMS mode input.
10 P2.4/ADC12/INT12/TDO bidirectional GPIO P2.4. Alt: ADC channel 12 (analog); external interrupt INT12; JTAG TDO data output.
11 P2.5/ADC13/INT13/Vref bidirectional GPIO P2.5. Alt: ADC channel 13 (analog); external interrupt INT13; external ADC reference voltage Vref input/output.
12 P0.7/ADC23 bidirectional GPIO P0.7. Alt: ADC channel 23 analog input.
13 P0.6/ADC22 bidirectional GPIO P0.6. Alt: ADC channel 22 analog input.
14 P0.5/ADC21 bidirectional GPIO P0.5. Alt: ADC channel 21 analog input.
15 P0.4/ADC20 bidirectional GPIO P0.4. Alt: ADC channel 20 analog input.
16 P0.3/ADC19 bidirectional GPIO P0.3. Alt: ADC channel 19 analog input.
17 P0.1/ADC17/CMP3+ bidirectional GPIO P0.1. Alt: ADC channel 17 analog input; comparator 3 non-inverting (+) analog input.
18 P0.0/ADC16/CMP2+ bidirectional GPIO P0.0. Alt: ADC channel 16 analog input; comparator 2 non-inverting (+) analog input.
19 P4.2/PLVD/CMP- bidirectional GPIO P4.2. Alt: port low-voltage detect input PLVD (analog, 1.2 V threshold, interruptible); shared inverting (-) input of comparators CMP1/2/3.
20 P1.0/ADC0/CMP1+ bidirectional GPIO P1.0. Alt: ADC channel 0 analog input; comparator 1 non-inverting (+) analog input.
21 P1.1/ADC1 bidirectional GPIO P1.1. Alt: ADC channel 1 analog input.
22 P1.2/ADC2 bidirectional GPIO P1.2. Alt: ADC channel 2 analog input.
23 P1.3/ADC3 bidirectional GPIO P1.3. Alt: ADC channel 3 analog input.
24 P1.4/ADC4 bidirectional GPIO P1.4. Alt: ADC channel 4 analog input.
25 P5.3/ADC26 bidirectional GPIO P5.3. Alt: ADC channel 26 analog input.
26 P4.3/SDA bidirectional GPIO P4.3. Alt: two-wire ISP/debug data input/output (SDA). This is the debug SDA, not the IIC-bus SDA (IIC is PTM-mapped).
27 P3.1/INT3/ADC27 bidirectional GPIO P3.1. Alt: external interrupt INT3 input; ADC channel 27 analog input.
28 P3.2/ADC28 bidirectional GPIO P3.2. Alt: ADC channel 28 analog input.
29 P3.3/ADC29 bidirectional GPIO P3.3. Alt: ADC channel 29 analog input.
30 P3.4/INT4/ADC30 bidirectional GPIO P3.4. Alt: external interrupt INT4 input; ADC channel 30 analog input.
31 P3.5/INT5/ADC31 bidirectional GPIO P3.5. Alt: external interrupt INT5 input; ADC channel 31 analog input.
32 P3.6/INT6 bidirectional GPIO P3.6. Alt: external interrupt INT6 input.

Key specifications

Parameter Value
Manufacturer Shanghai Holychip Elec
Package LQFP-32(7x7)
Category Single Chip Microcomputer/Microcontroller
Pins 32

Ordering variants

Same part, different packaging or reel option.

  • HC89S105AK8T7CM
  • HC89S105AK8T7CMAS8T7CM
  • HC89S105AS8T7CM
  • HC89S105AK8T7CMAC8T7M
  • HC89S105AC8T7M

CAD (KiCad official)

  • Symbol: HC89S105AK8T7CM
  • Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
  • 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Shanghai Holychip Elec datasheet (221 pp, sha256 6c85c1d6e46dbbbf, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF