The Vinka VK1640B datasheet describes an 8×12 LED display driver chip with 3.0‑5.5 V supply, 8‑level brightness control, SSOP24 package, and its electrical…
The VK1640B is a dedicated LED‑display driver for 8‑segment by 12‑grid matrices. It integrates a data latch, LED driver circuits, an internal 8×12‑bit display RAM, and an on‑power‑up reset. The chip operates from a 3.0 V to 5.5 V supply, provides eight levels of overall brightness adjustment, and uses a two‑wire serial interface (SCLK and DIN) for data transfer.
The device is supplied in an SSOP24 package (8.65 mm × 3.90 mm). Pin assignments include eight SEG pins for LED anodes, twelve GRID pins for LED cathodes, VDD, GND, SCLK, and DIN. Detailed command formats allow writing display data, setting brightness, and controlling the display on/off. Electrical characteristics such as supply voltage, power dissipation, output currents, and temperature ranges are listed in the datasheet. This manual is written in Chinese.
| Supply Voltage (VDD) | 3.0 V – 5.5 V |
|---|---|
| Power Dissipation (PD) | 400 mW |
| LED Output Current (IOLGRID) | +200 mA |
| Segment Output Current (IOHSEG) | -50 mA |
| Storage Temperature (TSTG) | -65 °C – +150 °C |
| Operating Temperature (TOTG) | -40 °C – +85 °C |
| Package | SSOP24 (8.65 mm × 3.90 mm) |
| Brightness Levels | 8 |
The VK1640B operates from a supply voltage of 3.0 V to 5.5 V.
The chip provides eight overall brightness levels.
It uses an SSOP24 package with 8 SEG pins, 12 GRID pins, VDD, GND, SCLK and DIN.