BU21077MUV Datasheet, PDF (1/16 Pages) Rohm – Capacitive Switch Controller IC

Datasheet
Capacitive Controller ICs
Capacitive Switch Controller IC
BU21077MUV
General Description
BU21077MUV is a capacitive switch controller for switch
operation.
BU21077MUV has programmable MPU and it control the
sensing sequence and how to use value of sensor. It is
possible to reduce operational current with devising a
sensing sequence.
Key Specifications
■ Input Voltage Range
■ Operating Temperature Range
2.7 to 5.5V
-20 to +85°C
Package
VQFN020V4040
4.00 ㎜×4.00 ㎜×1.00 ㎜
Features
■ Programmable MPU
■ 8 Capacitive Sensor Ports
■ 2-Wire Serial Bus Interface
■ Single Power Supply
■ Built-in Power-On-Reset and Oscillator
Applications
■ Portable Device such as Smart Phone, PDA.
■ Electronic Device with Multi Switches
■ Information Appliance such as Projector
■ AV Appliance such as Digital TV, HDD Recorder
■ PC / PC Peripheral Equipment such as Laptop PC
Typical Application Circuit
2.2uF
1.0uF
VDD
15
16
SIN1
SIN0
AVDD
DVDD
RSTB
20
1
BU21077MUV
1.0uF
11
10
SIN5
SIN6
SIN7
TEST
INT
VDD
6
1MΩ
5
4.7kΩ
4.7kΩ
HOST
Figure 1. Typical Application Circuit
〇Product structure : Silicon monolithic integrated circuit
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
〇This product has no designed protection against radioactive rays
1/12
TSZ02201-0L5L0F300820-1-2
14.Jul.2016 Rev.002