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TM1621E
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TM Shenzhen Titan Micro Elec LCD Drivers, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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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README
markdownTM1621E
TM Shenzhen Titan Micro Elec · LCD Drivers · SOP-16
TM1621E from TM Shenzhen Titan Micro Elec, in a SOP-16. 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 | /CS | input | When /CS is high, reads and writes of data and commands are invalid and the serial interface circuit is reset; when /CS is low and used as an input, reads and writes of data and commands are valid. |
| 2 | /WR | input | Data on the DATA line is written into the TM1621E on the rising edge of /WR. |
| 3 | DATA | bidirectional | Serial data input/output that requires an external pull-up resistor; serial clock (fCLK) is specified up to 300 KHz at 3 V and 500 KHz at 5 V. |
| 4 | VSS | power_in | Logic ground; system ground connection. |
| 5 | VLCD | power_in | LCD power supply input, used to set the LCD operating voltage; VLCD must be lower than VDD. |
| 6 | VDD | power_in | Logic positive supply, operating voltage range 2.4 V to 5.2 V. |
| 7 | COM0 | output | LCD common driver output; number of active commons (2, 3 or 4) is selected by software. |
| 8 | COM1 | output | LCD common driver output; number of active commons (2, 3 or 4) is selected by software. |
| 9 | COM2 | output | LCD common driver output; number of active commons (2, 3 or 4) is selected by software. |
| 10 | COM3 | output | LCD common driver output; number of active commons (2, 3 or 4) is selected by software. |
| 11 | SEG8 | output | LCD segment driver output. |
| 12 | SEG11 | output | LCD segment driver output. |
| 13 | SEG14 | output | LCD segment driver output. |
| 14 | SEG17 | output | LCD segment driver output. |
| 15 | SEG20 | output | LCD segment driver output. |
| 16 | SEG23 | output | LCD segment driver output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TM Shenzhen Titan Micro Elec |
| Package | SOP-16 |
| Category | LED Drivers |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作电压 (operating voltage) | VDD | 2.4 | 5.2 | V | 3 | ||
| 工作电流 (operating current) | IDD | 150 | 300 | uA | 3V 不带负载 片内RC振荡器 | 3 | |
| 工作电流 (operating current) | IDD | 300 | 600 | uA | 5V 不带负载 片内RC振荡器 | 3 | |
| 待机电流 (standby current) | ISTB | 0.1 | 5 | uA | 3V 不带负载 省电模式 | 3 | |
| 待机电流 (standby current) | ISTB | 0.3 | 10 | uA | 5V 不带负载 省电模式 | 3 | |
| 输入低电平电压 (input low voltage) | VIL | 0 | 0.6 | V | 3V DATA,/WR,/CS | 3 | |
| 输入低电平电压 (input low voltage) | VIL | 0 | 1 | V | 5V DATA,/WR,/CS | 3 | |
| 输入高电平电压 (input high voltage) | VIH | 2.4 | 3 | V | 3V DATA,/WR,/CS | 3 | |
| 输入高电平电压 (input high voltage) | VIH | 4 | 5 | V | 5V DATA,/WR,/CS | 3 | |
| DATA 输出低电平电流 (DATA sink current) | IOL1 | 0.5 | 1.2 | mA | 3V VOL=0.3V / VOL=0.5V | 3 | |
| DATA 输出低电平电流 (DATA sink current) | IOL1 | 1.3 | 2.6 | mA | 5V | 3 | |
| DATA 输出高电平电流 (DATA source current) | IOH1 | -0.4 | -0.8 | mA | 3V VOH=2.7V | 3 | |
| DATA 输出高电平电流 (DATA source current) | IOH1 | -0.9 | -1.8 | mA | 5V VOH=4.5V | 3 | |
| LCD 公共口漏电流 (LCD common sink current) | IOL2 | 80 | 150 | uA | 3V VOL=0.3V | 3 | |
| LCD 公共口漏电流 (LCD common sink current) | IOL2 | 150 | 250 | uA | 5V VOL=0.5V | 3 | |
| LCD 公共口源电流 (LCD common source current) | IOH2 | -80 | -120 | uA | 3V VOH=2.7V | 3 | |
| LCD 公共口源电流 (LCD common source current) | IOH2 | -120 | -200 | uA | 5V VOH=4.5V | 3 | |
| LCD 段管脚漏电流 (LCD segment sink current) | IOL3 | 60 | 120 | uA | 3V VOL=0.3V | 3 | |
| LCD 段管脚漏电流 (LCD segment sink current) | IOL3 | 120 | 200 | uA | 5V VOL=0.5V | 3 | |
| LCD 段管脚源电流 (LCD segment source current) | IOH3 | -40 | -70 | uA | 3V VOH=2.7V | 3 | |
| LCD 段管脚源电流 (LCD segment source current) | IOH3 | -70 | -100 | uA | 5V VOH=4.5V | 3 | |
| 上拉电阻 (pull-up resistance) | RPH | 40 | 80 | 150 | Kohm | 3V DATA,/WR,/CS | 3 |
| 上拉电阻 (pull-up resistance) | RPH | 30 | 60 | 100 | Kohm | 5V VOH=4.5V | 3 |
| 供应电压 (supply voltage, absolute maximum as printed) | -0.3 | 0.5 | V | 3 | |||
| 贮存温度 (storage temperature) | -50 | 125 | ℃ | 3 | |||
| 工作温度 (operating temperature) | -40 | 85 | ℃ | 3 |
CAD (KiCad official)
- Symbol:
TM1621E - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
tm1621e-etched.step/tm1621e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tm1621e.step/tm1621e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TM Shenzhen Titan Micro Elec datasheet (9 pp, sha256
970a78d5f0b0c274, retrieved 2026-10-20, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).