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ICM-42688-PC

Public Made by Adom

by adom

Tokmas Accelerometers, LGA-14(2.5x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ICM-42688-PC

Tokmas · Accelerometers · LGA-14(2.5x3)

ICM-42688-PC from Tokmas, in a LGA-14(2.5x3). 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 SDO/SA0 output SPI-UI data out (SDO) in 4-wire SPI mode, and I2C/I3C address select SA0 (SA0=0 gives 0x6B, SA0=1 gives 0x6A) with an internal 200K pull-up.
2 SDx bidirectional Reserved pin; connect to VDDIO, GND or leave unconnected, with an internal 200K pull-up.
3 SCx bidirectional Reserved pin; connect to VDDIO, GND or leave unconnected, with an internal 200K pull-up.
4 INT1 output Programmable interrupt 1 output.
5 VDDIO power_in Power supply for the IO pins.
6 GND power_in Ground (0 V supply).
7 GND power_in Ground (0 V supply).
8 VDD power_in Power supply.
9 INT2 output Programmable interrupt 2 (INT2) / data ready (DRDY) output.
10 RESV bidirectional Reserved; connect to VDDIO or logic high (preferred) or leave floating with the internal 200K pull-up enabled, and never connect to GND or logic low.
11 RESV-NC unconnected Reserved; float is preferred, and it is an output by default (disabled if RESV pin 10 is firmly held at VDDIO).
12 CS input I2C/I3C/SPI-UI selection pin: 1 enables I2C/I3C mode, 0 enables SPI-UI mode and disables I2C/I3C, with an internal 200K pull-up.
13 SCL bidirectional I2C/I3C clock (SCL) in I2C/I3C mode and SPI-UI serial clock (SPC) in SPI mode, with an internal 200K pull-up.
14 SDA bidirectional I2C/I3C data (SDA), SPI-UI data in (SDI) in 4-wire mode or data IO (SDIO) in 3-wire mode, with an internal 200K pull-up.

Key specifications

Parameter Value
Manufacturer Tokmas
Package LGA-14(2.5x3)
Category Sensors
Pins 14

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 1.71 1.8 3.6 V 11
I/O Pins Supply Voltage VDDIO 1.71 1.8 3.6 V 11
Digital Low Level Input Voltage VIL 0.3 V max printed as 0.3 *VDDIO 11
Digital High Level Input Voltage VIH 0.7 V min printed as 0.7 *VDDIO; table also prints VDDIO + 0.3 11
Digital Low Level Output Voltage VOL 0.1 V max printed as 0.1 *VDDIO 11
Digital High Level Output Voltage VOH 0.9 V min printed as 0.9 *VDDIO 11
POR Threshold Voltage VPOR_RLS 1.1 V 11
Storage Temperature TSTG -40 125 °C 11
Lead Soldering Temperature TPmax 260 °C 10 Seconds 11
Supply Voltage VDD -0.3 3.6 V 11
I/O Pins Supply Voltage VDDIO -0.3 3.6 V 11
Acceleration (mechanical shock) Sg 10000 g 0.2 ms (Un-powered) 11
ESD Human Body Model ESD -2000 2000 V Human Body Model per JES001-2014 11
ESD Charged Device Model ESD -500 500 V Charged Device Model per JESD22-C101 11
Power Off Voltage SDV 0.2 V Voltage that device considers to be power down, valid for VDD & VDDIO 12
Power Off Interval PINT 100 μs Time period required for voltage lower than SDV to enable next POR, valid for VDD & VDDIO 12
Host SPI Interface Speed fSPC 15 MHz VDD = VDDIO = 1.8 V, T = 25°C 19
Host I2C Interface Speed fSCL 400 kHz standard mode and Fast Mode are supported 19
Host I3C Interface Speed fSCL3 12.5 MHz Standard Data Rate (SDR) 19
SPI Clock Cycle tSPC 66.6 ns VDDIO = 1.8 V, T = 25°C 75
SPI Clock Frequency fSPC 15 MHz VDDIO = 1.8 V, T = 25°C 75
CS Setup Time tsCS 6 ns 75
CS Hold Time thCS 8 ns 75
SDI Input Setup Time tsSDI 5 ns 75
SDI Input Hold Time thSDI 15 ns 75
SDO Time for Valid Output tvSDO 50 ns 75
SDO Hold Time for Output thSDO 9 ns 75
SDO Disable Time for Output tdSDO 50 ns 75
SDIO Address Setup Time tsSDIO 5 ns 75
SDIO Address Hold Time thSDIO 15 ns 75
SDIO Time for Valid Data tvSDIO 50 ns 75
SDIO Time from SPC to High Z tczSDIO 50 ns 75
SDIO Time from CS to High Z tzSDIO 50 ns 75
I2C SCL Clock Frequency fSCL 0 400 KHz 77
I2C Bus-Free Time between STOP and START tBUF 1300 ns 77
I2C START or Repeated START Hold Time tHD;STA 600 ns 77
I2C SCL LOW Period tLOW 1300 ns 77
I2C SCL HIGH Period tHIGH 600 ns 77
I2C Repeated START Setup Time tSU;STA 600 ns 77
I2C Data Setup Time tSU;DAT 100 ns 77
I2C Data Hold Time, Standard Mode tHD;DAT 0 3450 ns Standard Mode 77
I2C Data Hold Time, Fast Mode tHD;DAT 0 900 ns Fast Mode 77
I2C SCL Rise Time, Standard Mode tRCL, tR 1000 ns Standard Mode 77
I2C SCL Rise Time, Fast Mode tRCL, tR 300 ns Fast Mode; min printed as 20 + 0.1 * CB 77
I2C SCL Fall Time, Standard Mode tFCL 300 ns Standard Mode 77
I2C SCL Fall Time, Fast Mode tFCL 300 ns Fast Mode; min printed as 20 + 0.1 * CB 77
I2C SDA Rise Time, Standard Mode tRDA, tRCL1 1000 ns Standard Mode 77
I2C SDA Rise Time, Fast Mode tRDA, tRCL1 300 ns Fast Mode; min printed as 20 + 0.1 * CB 77
I2C SDA Fall Time, Standard Mode tFDA 300 ns Standard Mode 77
I2C SDA Fall Time, Fast Mode tFDA 300 ns Fast Mode; min printed as 20 + 0.1 * CB 77
I2C Stop Condition Setup Time tSU;STO 600 ns 77
Accelerometer Noise Density 150 µg/√Hz High-Resolution Mode 14
Accelerometer Initial Offset Tolerance -100 100 mg Board Level 14
Accelerometer Initial Sensitivity Tolerance -6 6 % Board Level 14
Gyroscope Noise Density 13 mdps/√Hz High-Resolution Mode 15
Gyroscope Initial Offset Tolerance -10 10 dps Board Level 15
Gyroscope Initial Sensitivity Tolerance -3 3 % Board Level 15
System Turn On Time 15 ms From Software Reset, No Power, or Power Down to Power-on Default state 15

CAD (KiCad official)

  • Symbol: ICM-42688-PC
  • Footprint: Package_LGA:Bosch_LGA-14_3x2.5mm_P0.5mm
  • 3D model: LGA-14(2.5x3) (KiCad packages3D, STEP)
  • 3D model files: icm-42688-pc-etched.step / icm-42688-pc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); icm-42688-pc.step / icm-42688-pc.glb are the bare package body.

Provenance

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

  • Datasheet: Tokmas datasheet (80 pp, sha256 409e777a5db8dcff, retrieved 2026-10-22, tier: lcsc)
  • 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