Update: 01 October, 2023
The BU1851GUW key encoder IC is an 8x8 keyboard encoder IC that supports 64 keys and is compatible with QWERTY keyboards. It adopts the architecture that the information of the only key whose status is changed, such as push or release, is encoded into the 8 bits data. This can greatly reduce the CPU load which tends to become heavier as the number of keys increase. (Previously, all key's status is stored in the registers.) Furthermore, auto sleep function contribute to low power consumption, when no keys are pressed. It is also equipped with the various functions such as ghost key rejection, N-key Rollover, Built-in power on reset and oscillator.
File format: PDF
Size: -
MD5 Checksum: ACFB2B0046935E0A05BD6866B618426E
Publication date: 04 June, 2012
Downloads: -
PDF Link: ROHM BU1851GUW handbook PDF