BU1852GUW is a key encoder IC from ROHM that supports up to 96 key matrix keyboards and has low power consumption and anti-interference features.
The BU1852GUW is a key‑encoder IC that can monitor up to a 96‑key matrix and offers features such as ghost‑key rejection, N‑key rollover, and low‑power standby mode. The device supports both key‑scan and GPIO functions, with 3 V tolerant inputs and built‑in power‑on reset.
The note includes absolute maximum ratings, operating conditions, electrical characteristics, package information (VBGA35W040), pin assignments, and a functional block diagram. Ordering information and legal notices are also provided.
| Maximum matrix keys | 96 (8×12) |
|---|---|
| Stand‑by current | < 3 µA |
| Operating temperature range | -30 °C – +85 °C |
| Package power dissipation | 272 mW |
| Package type | VBGA35W040 |
It can monitor up to a 96‑key matrix (8 × 12).
The standby current is less than 3 µA.
It is supplied in a VBGA35W040 package.