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TM1681-LQFP48

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TM Shenzhen Titan Micro Elec LED Drivers, LQFP-48(7x7). Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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TM1681-LQFP48

TM Shenzhen Titan Micro Elec · LED Drivers · LQFP-48(7x7)

TM1681-LQFP48 from TM Shenzhen Titan Micro Elec, in a LQFP-48(7x7). 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 ROW10 output LED row drive output.
2 ROW9 output LED row drive output.
3 ROW8 output LED row drive output.
4 ROW7 output LED row drive output.
5 ROW6 output LED row drive output.
6 LED_VDD power_in LED driver positive supply; must be at the same voltage as VDD.
7 ROW5 output LED row drive output.
8 ROW4 output LED row drive output.
9 ROW3 output LED row drive output.
10 ROW2 output LED row drive output.
11 ROW1 output LED row drive output.
12 ROW0 output LED row drive output.
13 VSS power_in Logic supply negative terminal (ground).
14 OSC bidirectional Outputs the on-chip RC system clock in RC master mode; in slave or external-clock master mode the system clock is input here.
15 DATA bidirectional Serial data input/output.
16 WR input Write clock input; data on DATA is written into the TM1681 on the rising edge of WR.
17 RD input Read clock input; RAM data is output on DATA at the falling edge of RD and latched at the next rising edge.
18 CS input Chip select; when high data and command transfers are disabled and the serial interface is reset, when low transfers are enabled.
19 SYNC bidirectional Sync signal output in master or external-clock master mode; sync signal input in slave mode.
20 VDD power_in Logic supply positive terminal, operating range 2.4 to 5.5 V.
21 COM0 output LED common terminal (COM0), N-MOS or P-MOS open-drain selectable.
22 COM1 output LED common terminal (COM1), N-MOS or P-MOS open-drain selectable.
23 COM2 output LED common terminal (COM2), N-MOS or P-MOS open-drain selectable.
24 LED_VSS power_in LED driver negative supply; connect to VSS.
25 NC unconnected No connection.
26 COM3 output LED common terminal (COM3), N-MOS or P-MOS open-drain selectable.
27 COM4 output LED common terminal (COM4), N-MOS or P-MOS open-drain selectable.
28 COM5 output LED common terminal (COM5), N-MOS or P-MOS open-drain selectable.
29 COM6 output LED common terminal (COM6), N-MOS or P-MOS open-drain selectable.
30 COM7 output LED common terminal (COM7), N-MOS or P-MOS open-drain selectable.
31 NC unconnected No connection.
32 LED_VSS power_in LED driver negative supply; connect to VSS.
33 LED_VDD power_in LED driver positive supply; must be at the same voltage as VDD.
34 NC unconnected No connection.
35 NC unconnected No connection.
36 ROW23 output LED row drive output.
37 ROW22 output LED row drive output.
38 ROW21 output LED row drive output.
39 ROW20 output LED row drive output.
40 ROW19 output LED row drive output.
41 ROW18 output LED row drive output.
42 ROW17 output LED row drive output.
43 ROW16 output LED row drive output.
44 ROW15 output LED row drive output.
45 ROW14 output LED row drive output.
46 ROW13 output LED row drive output.
47 ROW12 output LED row drive output.
48 ROW11 output LED row drive output.

Key specifications

Parameter Value
Manufacturer TM Shenzhen Titan Micro Elec
Package LQFP-48(7x7)
Category LED Drivers
Pins 48

CAD (KiCad official)

  • Symbol: TM1681-LQFP48
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: tm1681-lqfp48-etched.step / tm1681-lqfp48-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tm1681-lqfp48.step / tm1681-lqfp48.glb are the bare package body.

Provenance

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

  • Datasheet: TM Shenzhen Titan Micro Elec datasheet (19 pp, sha256 ed140a0ed774d54e, retrieved 2026-10-22, 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