TM1628

The TM1628 is a versatile LED driver and key-scanning IC, commonly used to control 7-segment displays, LED matrices, and buttons in embedded systems. It features:
- Multiplexed LED control (up to 8×16 segments).
- Integrated key-scanning (supports up to 8×3 matrix).
- SPI-like serial interface for easy MCU communication.
- Adjustable brightness via PWM.
Applications include digital clocks, appliances, and industrial panels. Its ability to drive LEDs and scan keys simultaneously reduces external components, making it cost-effective for compact designs.
For operation, send commands/data via DIN (data), CLK (clock), and STB (chip select). The TM1628 is compatible with 3.3V/5V systems and requires minimal firmware overhead.
Datasheets provide detailed command sets for display modes, addressing, and key-read functions.

The TM1628 is a versatile LED driver and key-scan controller with the following key features:
- LED Driver: Supports up to 8 segments × 16 digits (or 10 segments × 13 digits) for multiplexed LED displays.
- Key Scanning: Integrated 8×3 key-scan matrix (supports up to 24 keys).
- Communication Interface: Uses a simple 3-wire serial interface (STB, CLK, DIO).
- Brightness Control: Adjustable via 8-level PWM dimming.
- Low Power Consumption: Supports power-saving modes.
- Wide Voltage Range: Operates at 2.4V–5.5V, compatible with 3.3V/5V systems.
- Built-in Memory: Includes display RAM for data storage.
- Package Options: Available in SOP28 and DIP28 packages.
Ideal for appliances, meters, and industrial controls requiring LED displays and key inputs.

The TM1628 is a LED driver and key-scan IC with 28 pins. Its primary functions include:
- LED Drive: Supports up to 10 segments × 8 commons (80 LEDs) or 13 segments × 4 commons (52 LEDs).
- Key Scan: Provides 8×2 (16-key) matrix scanning.
- Interface: Uses a 4-wire serial bus (CLK, STB, DIO, GND) for communication.
- Dimming Control: Adjustable brightness via PWM.
Key pins:
- VDD (Pin 28): Power supply (3.3V–5V).
- SEG/GRID Pins (Pins 1–24): Multiplexed for LED segments/key scan.
- CLK (Pin 25), STB (Pin 26), DIO (Pin 27): Serial control signals.
Compact and versatile, it’s commonly used in appliances and industrial controls.

The TM1628 is manufactured by Titan Micro Electronics (Titanmec), a Chinese semiconductor company specializing in integrated circuits (ICs) for display drivers, LED control, and consumer electronics. Founded in 2000 and headquartered in Shenzhen, Titanmec is known for producing cost-effective ICs, including LED driver chips like the TM1628, commonly used in segment displays, keypad scanning, and industrial control systems. The company serves global markets with a focus on affordability and reliability.

The TM1628 is a versatile LED driver and key-scanning IC commonly used in:
1. Home Appliances – Displays for microwaves, ovens, and air conditioners.
2. Consumer Electronics – Digital clocks, thermostats, and audio equipment.
3. Industrial Controls – Instrument panels and machinery interfaces.
4. Automotive Displays – Dashboard indicators and infotainment systems.
5. Medical Devices – Simple readouts for monitors and diagnostic tools.
It supports up to 8×4 key scanning and drives 7-segment LED displays, making it ideal for compact, cost-effective interfaces.

The TM1628 is typically available in a SOP28 (Small Outline Package, 28-pin) or DIP28 (Dual In-line Package, 28-pin) format. These packages are compact and suitable for LED display and key-scan control applications. The SOP28 is surface-mounted, while the DIP28 is through-hole, offering flexibility for different PCB designs. Both support easy integration into driver circuits for segment displays and matrix keyboards.