TM1650 LED Drive Control: Datasheet pdf, Circuit and Pinout
TM1650 datasheet pdf and Unclassified product details from TM(Shenzhen Titan Micro Elec) stock available at Utmel









TM1650 is a LED driver for controlling LEDs with a keyboard scanning interface. In this article, we will explain datasheet pdf, circuit, pinout, specifications, and other details about the TM1650 driver. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!

Arduino, TM1650 7-Segment LED Displays and TM16xx Library – The Details
What is TM1650?
The TM1650 is a special circuit with a keyboard scanning interface for controlling LED (light-emitting diode display) drive. Integrated MCU
Input and output control digital interface, data latch, LED drive, keyboard scanning, brightness adjustment, and other circuits. TM1650 has stable performance and quality
Reliable quantity, strong anti-interference ability are suitable for 24 hours long-term continuous work applications.
TM1650 Pinout

TM1650 Pinout
| Pin Name | Description |
| DIG1 | LED segment drive output 1 / keyboard scan output 1 |
| DIG2 | LED segment drive output 2 / keyboard scan output 2 |
| DIG3 | LED segment drive output 3 / keyboard scan output 3 |
| DIG4 | LED segment drive output 4 / keyboard scan output 4 |
| SCL | I2C Serial Clock Input |
| SDA | I2C Serial Data Input/Output |
| A/K11 | LED segment drive output A/key scan input K11 |
| B/K12 | LED segment drive output B/key scan input K12 |
| C/K13 | LED segment drive output C/key scan input K13 |
| D/K14 | LED segment drive output D/key scan input K14 |
| E/K15 | LED segment drive output E/key scan input K15 |
| F/K16 | LED segment drive output F/key scan input K16 |
| G/K17 | LED segment drive output G/key scan input K17 |
| DP/KP | LED segment output DP/keyboard logo output KP |
| GND | Ground |
| VDD | VCC of Supply |
TM1650 CAD Model

TM1650 Symbol

TM1650 Footprint
Specifications
- TypeParameter
- Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
SOP-16_150mil - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube-packed - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant
TM1650 Internal Block Diagram

TM1650 Internal Block Diagram
TM1650 Features
Two display modes: 8-segment × 4 digits and 7-segment × 4 digits
Segment drive current is greater than 25mA,
Provide 8-level brightness control
Keyboard scanning: 7×4bit internal integrated transistor driver
High-speed two-wire serial interface
The built-in clock oscillation circuit
Built-in power-on reset circuit
Support 2.8V-5.5V power supply voltage
Provide DIP16 and SOP16 packages
TM1650 Applications
Display drivers for household appliances such as set-top boxes, air conditioners, DVD/VCD, etc.
TM1650 Equivalents
MBI5026GD, CD4511, MAX6945, MAX7221
Where to Use TM1650
This is a very inexpensive and adaptable device that may be used for a variety of purposes. The devices contain a 150A low-power shutdown mode, 8 channel brightness control, a scan-limit register that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on.
How to Use TM1650
Although the datasheet indicates that it uses an I2C interface, this IC can be driven without one, and it is recommended that you do so because this IC does not provide any I2C addresses, which means you cannot drive more than one I2C device on the I2C bus. A basic schematic of the TM1650 with a keypad is shown below.

TM1650 Schematic
As you can see, this gadget is designed to be controlled using a matrix keypad to operate the TM1650 IC. Aside from that, you may control the TMS1650 IC with an Arduino by using the TM16XX library by maxing-rd from GitHub. This library allows you to control the TMS1650 IC with any Arduino pin.
TM1650 Package Dimensions

TM1650 Package Dimensions
TM1650 Manufacturer
Shenzhen Titan Micro-Electronics Co., Ltd. was established in 2003, is headquartered in Shenzhen Nanshan District high tech Industrial Park North violet information port, day micro is to integrated circuit (IC) design, integrated circuit package, semiconductor packaging and testing equipment manufacturing, industrial marketing characteristics of the fully synthetic enterprise. Micro day around customer needs continuous innovation, there are more than 3000 customers in the use of micro integrated circuit products, including data converter, LCD driver, radio frequency (RF) IC, power management products, and other types of sensors and signal processing products. Customers are throughout the country, Europe, Southeast Asia, and other countries in the region.
Does TM1650 need to add segment resistance?
TM1650 is a 4-bit 7-segment LED nixie tube driver chip with an I2C serial port. It does not need to be programmed, but the single-chip microcomputer used to control it needs to be programmed.
How to control the brightness of tm1650?
It is controlled by PTM. TM1650 is a very cost-effective chip. A single chip can drive a 4-digit 8-segment digital tube and key scanning.
What is the program of 51 single-chip microcomputer to drive TM1650?
TM1650 is an 8-segment × 4 digits led driver, the segment drive current is greater than 25mA, the bit drive current is greater than 150mA , it provides 8-level brightness control, and also has a 7×4 keyboard scan function.
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