BU21050FS-E2 Rohm Semiconductor, BU21050FS-E2 Datasheet
BU21050FS-E2
Specifications of BU21050FS-E2
Related parts for BU21050FS-E2
BU21050FS-E2 Summary of contents
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... Capacitive Sensor Control IC Series Capacitive Sensor Switch Control IC BU21050FS ●Description BU21050FS are the capacitive sensor controller with 8ch respectively. The IC has the port interface and easy to replace the point of switch to this controller. ●Features 1) Port output interface 2) Few software control 3) 4bit Binary outputs or 8GPIO outputs ...
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... BU21050FS ●Electrical characteristics(Especially, Topr=25℃ and AVDD=DVDD=0 as long as it doesn't specify it.) Item Symbol Input“H”voltage V IHIO Input“L”voltage V ILIO Output“H”voltage V OHIO Output“L”voltage V OL Input leakage current I IZ Output leakage current I OZ Standby current I ST Operation current ...
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... BU21050FS ●Block Diagram, Pin configuration ・Sensor I/F CV Conversion Circuit This part selects target sensor and converts its capacitance to a voltage signal. Specifically, all eight sensors are selected one-by-one and their capacity is compared to a common referencecapacity. Each difference value is converted to a certain voltage signal. ・ ...
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... BU21050FS ●Pin Description Pin Name I/O No. 1 SDN In Shutdown input 2 DVDD Power Digital part Power supply 3 GND Ground Ground 4 SREF AIn Standard capacitor input 5 SIN1 AIn Sensor input1 6 SIN2 AIn Sensor input 2 7 SIN3 AIn Sensor input 3 8 SIN4 AIn Sensor input 4 ...
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... BU21050FS ●I/O Circuit ①CMOS INPUT CIN PAD 【IFSEL: Output interface format】 IFSEL H L INSEL = H : 8GPIOs output mode Initial status PO[8:1] = Hi-Z INSEL = L : 4bit Binary output mode Initial Status PO[4: Button Button OFF SIN1 SIN2 SIN3 SIN4 SIN5 SIN6 SIN7 SIN8 Only the first sensor input was effective in terms of button ON judgment when more than one input has occurred ...
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... BU21050FS 【Filter selection】 The noise filter effect can be selected If “Strong” is selected, noise will get down, but the reaction time will be longer. Sensor ON threshold FILTER = ” L ” : filter effect → under ●Setting method 1)Please for the first time in a minimum gain. ...
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... BU21050FS ●Ordering part number Part No Part No SSOP-A32 13.6 ± 0.2 (MAX 13.95 include BURR 0.36 ± 0.1 0.1 0.8 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved Package FS：SSOP-A32 <Tape and Reel information> Tape Embossed carrier tape Quantity 2000pcs E2 Direction The direction is the 1pin of product is at the upper left when you hold ...
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