BU1851GUW - Rohm

BU1851GUW GPIO ICs Series Key Encoder IC

Key Encoder IC can monitor up to 8x8 matrix (64 keys), which means to be adaptable to Qwerty keyboard. We adopt the architecture that the information of the only key which status is changed, like 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, al.

Features

1) Monitor up to 64-matrix keys 2) Under 5A Stand-by Current 3) Built-in Power On Reset 4) Ghost key rejection
●Absolute maximum ratings (Ta=25℃) Item Supply Voltage
*1 Input voltage Storage temperature range Package power
*1
*2 Symbol VDD VI Tstg PD Value -0.3 ~ +4.5 -0.3 ~ VDD +0.3 -55 ~ +125 272
*2
*1 Unit V V ℃ mW comment This IC is not designed to be X-ray proof. It is prohibited to exceed the absolute maximum ratings even including +0.3 V. Package dissipation will be reduced each 2.72mW/ oC when the ambient temperature increases beyond 25 oC.
●Operating Conditions Limit Item Suppl.