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BU1851GUW - GPIO ICs Series Key Encoder IC

Datasheet Summary

Description

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.

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.

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Datasheet Details

Part number BU1851GUW
Manufacturer ROHM
File Size 327.47 KB
Description GPIO ICs Series Key Encoder IC
Datasheet download datasheet BU1851GUW Datasheet
Additional preview pages of the BU1851GUW datasheet.

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www.DataSheet4U.com GPIO ICs Series Key Encoder IC BU1851GUW No.09098EAT03 ●Description 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, 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.
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