BU21009MUV-E2 ROHM Electronics, BU21009MUV-E2 Datasheet
BU21009MUV-E2
Available stocks
Related parts for BU21009MUV-E2
BU21009MUV-E2 Summary of contents
Page 1
... Capacitive Sensor Switch Control IC BU21009MUV ●Description BU21009MUV is the capacitive sensor controller for the switch function and slider function with 16 channels sensors. All channels are calibrated for the slider functions. So this is useful for 16 switches application, too. LED driver is available (No PWM function). ●Features ...
Page 2
... BU21009MUV ●Electrical characteristics(Especially, Topr=25 ℃ and AVDD=DVDD=0 as long as it doesn't specify it.) PARAMETER SYMBOL H INPUT VOLTAGE V DVDDx0.8 IHIO L INPUT VOLTAGE V ILIO Output "H" voltage V DVDD-0.7 OHIO V OLLED V OLTXD Output "L" voltage V OLINT Input leakage current I IZ Off leakage current I OZ ...
Page 3
... BU21009MUV ●Block Diagram, Pin configuration AVDD DVDD SREF Sensor I/F、 Data correction and CV translate ADC SIN[15:0] circuit CS SCL Conversion sequence control SDA/TXD host I/F RXD Reset generation Clock SDN generation Power on CR Reset oscill CLK_EXT ation AVSS DVSS ・Sensor I/F CV translate circuit This module selects between sensor inputs. The selection sequences between all 16 channels. ...
Page 4
... BU21009MUV ●Pin Description Pin Name I/O No. 1 SIN4 AIn sensor input4 sensor input 5 2 SIN5/LED2 AIn/Out /PW Drive LEDcontrol output 2 3 SIN6 AIn sensor input6 sensor input 7 4 SIN7/LED3 AIn/Out /PWM Drive LED control output 3 5 SIN8 AIn sensor input8 sensor input 9 6 SIN9/LED4 AIn/Out ...
Page 5
... BU21009MUV ●I/O Circuit ①CMOS INPUT CIN PAD ④CMOS 3stute OUTPUT with ANALOG-SW ASW AIN I PAD OE www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. ②CMOS Schmitt INPUT CIN PAD ⑤CMOS Schmitt INOUT CIN I PAD OEN 5/13 Technical Note ③CMOS OUTPUT PAD I 2009.04 - Rev.B ...
Page 6
... BU21009MUV ●HOST I/F ・ 2 wire serial, BUS (Pin configuration, MODE［1:0］＝00b) Slave mode only Slave Address = 5Ch,5Dh selection possible. Normal (Normal mode. 100kHz Transfer rate) Fs mode (Fast mode. 400kHz Transfer rate) also. Not adapting sequential read / write. 【Data format】 ...
Page 7
... BU21009MUV ●Register map Address Register name 1*h SENS_DATA 30h POSX 31h POSY 32h, 33h BTN 4*h OFFSET ECh POS_MODE EDh RESET EEh CALIB EFh DONE F0h, F1h SENS_CH F2h LED_CH F3h, F4h IDLE_CH F5h LED_LINK F6h TIMES F7h TH_ON2 F8h, F9h TH_ON2_CH FAh ...
Page 8
... BU21009MUV 【1*h : Sensor Output Data】 Name: SENS_DATA Address (one byte per sensor channel) Description: The sensor output that converts to 10bit. Scaling, offsets and filtering (when enabled) are applied. The most significant 8 bits are presented to the software with this register. ...
Page 9
... BU21009MUV 【ECh : XY matrix setting】 Name: POS_MODE Address: ECh Description: Setting when two or more sensor are displayed to the first origin and position is detected This selects between two matrix configurations axis →SIN [ axis → SIN [11:4:12:3:13:2:14:1:15: axis →SIN [ axis → SIN [8:15] POS_EN : The position tracking enable Enables the condition under which the position tracking is made effective ...
Page 10
... BU21009MUV 【F3h / F4h : Idle Exit Condition】 Name: IDLE_CH Address: F3h / F4h Description: Defines which channels cause the device to wake up – i.e. go from idle mode to normal operation on a key press. Selection is made on a per channel basis. 1：Effective 0：Not used Bit7 Bit6 F3h ...
Page 11
... BU21009MUV 【FAh : Simultaneous Press and Idle Mode Entry】 Name: CMD Address: FAh Description: INTERMIT_EN : Intermittent and the drive are enable. ： Whether intermittent is driven at the idol mode is selected. 1：Intermittent is driven. 0：Intermittent is not driven. IDLE_T[3:0] : non-detect time-out setting ： This sets the time the chip takes to go from normal mode to idle mode in a period key inactivity. ...
Page 12
... BU21009MUV 【FDh : Switch ON -> OFF Threshold Value】 Name: TH_OFF Address: FDh Description: This register provides a threshold value for transitioning from ON to OFF. This is relative value from reference value (128d). So absolute value of threshold is128d + OFF[6:0]. It makes a threshold value between TH_ON and TH_OFF. ...
Page 13
... BU21009MUV ●Ordering part number Part No Part No VQFN032V5050 5.0±0.1 1PIN MARK 0.08 S 3.4±0.1 C0 0.75 +0.05 0.5 0.25 -0.04 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved Package MUV : VQFN032V5050 <Tape and Reel information> Tape Embossed carrier tape Quantity 2500pcs E2 Direction ...
Page 14
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...