TSM12MC

TSM12 12-Channel Self Calibration Capacitive Touch Sensor SPECIFICATION V1.3 November 2006 ADSemiconductor Confidential  Revision History Rev. 1.0 1.1 1.2 1.3 Description of change Initial Release Revision Flow chart , Appending 'Wait 100ms' Revision Unused CS pin -> Connect with GND Appending MLF package Appending MLF package Dimension Appending MLF package marking spec Date Originator 06.11.15 09.06.04 10.02.10 BM KIM SB CHEONG KD PARK 10.02.10 KDPARK ADSemiconductor® TSM12 (12-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 1 Specification 1.1 General Feature             12-Channel capacitive sensor with auto sensitivity calibration Selectable output operation (single mode / multi-mode) Independently adjustable in 8 step sensitivity Sync function for multi chip application Touch intensity can be detectable within 3 steps (Low, Middle and High) Adjustable internal frequency with external resister Adjustable response time and interrupt level by the control registers I2C serial interface Embedded high frequency noise elimination circuit IDLE mode to save the consumption Embedded power key function on channel 1 for mobile phone application RoHS compliant 32QFN, 32MLF packages 1.2      Application Mobile application (mobile phone / PDA / PMP etc) Membrane switch replacement Sealed control panels, keypads Door key-lock matrix application Touch screen replacement application 1.3 Package (32QFN, 32MLF) TSM12-32QFN TSM12-32MLF Drawings not to scale ADSemiconductor Confidential 1/36 ADSemiconductor® TSM12 (12-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 2 Pin Description (32QFN, 32MLF) PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Name RBIAS SRBIAS CS5 CS6 CS7 CS8 CS9 N.C. CS10 VDD CS11 CS12 VSS NC IRBIAS RST OUT1 SCL 19 SDA 20 21 22 23 24 25 26 INT I2C_EN ID_SEL P_CDEG0 P_CDEG1 P_CDEG2 VSS 27 28 29 30 31 32 Note 1 : I/O Analog Input Analog Input Analog Input Analog Input Analog Input Analog Input Analog Input Analog Input Digital Input Analog Input Analog Input Ground Analog Input Digital Input Digital Output Digital Input Digital Input/Output Digital Output Digital Input Digital Input Digital Input Digital Input Digital Input Digital Input Description Internal bias adjust input IDLE Mode Internal bias adjust input CH5 capacitive sensor input CH6 capacitive sensor input CH7 capacitive sensor input CH8 capacitive sensor input CH9 capacitive sensor input No Connection CH10 capacitive sensor input CH11 capacitive sensor input CH12 capacitive sensor input Supply ground No Connection Internal I2C clk frequency adjust input System reset (High reset) CH1 output (Open drain) I2C clock input Protection VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD VDD/GND VDD/GND VDD/GND VDD/GND I2C data (Open drain) VDD/GND Interrupt output (Open drain) I2C enable(Low enable) I2C address selection Ch1 sensitivity selection bit0 Ch1 sensitivity selection bit1 Ch1 sensitivity selection bit2 Output mode selection Digital SYNC/OPT (Single Output / Multi Output Note 1) Input/Output Sync pulse input /output VDD Power Power (2.5V~5.0V) CS1 Analog Input CH1 capacitive sensor input CS2 Analog Input CH2 capacitive sensor input CS3 Analog Input CH3 capacitive sensor input CS4 Analog Input CH4 capacitive sensor input Refer to 6.3 SYNC/OPT implementation VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND VDD/GND GND VDD/GND VDD/GND VDD/GND VDD/GND ADSemiconductor Confidential 2/36 ADSemiconductor® TSM12 (12-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 3 Absolute Maximum Rating Battery supply voltage 5.0V Maximum voltage on any pin VDD+0.3 Maximum current on any PAD 100mA Power Dissipation 800mW Storage Temperature -50 ~ 150℃ Operating Temperature -20 ~ 75℃ Junction Temperature 150℃ Note Unless any other command is noted, all above are operated in normal temperature. 4 ESD & Latch-up Characteristics 4.1 ESD Characteristics Mode H.B.M M.M Polarity Pos / Neg Pos / Neg Max Reference 2000V VDD 2000V VSS 2000V P to P 200V VDD 200V VSS 200V P to P 500V C.D.M Pos / Neg DIRECT 800V 4.2 Latch-up Characteristics Mode Polarity Max Positive 200mA Negative -200mA Positive 8.0V I Test V supply over 5.0V Test Step 25mA 1.0V ADSemiconductor Confidential 3/36 ADSemiconductor® TSM12 (12-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 5 Electrical Characteristics ▪ VDD=3.3V, Rb=510k, Sync Mode (Rsync = 2MΩ) (Unless otherwise noted), TA = 25℃ Characteristics Symbol Test Condition Min Typ Max Units Operating supply voltage VDD 3.3 80 200 7 15 1.5 2.3 - 5.0 130 315 1 V VDD= 3.3V RB=510k VDD= 5.0V RB=510k VDD= 3.3V RB=510k VDD= 5.0V RB=510k VDD= 3.3V RB=510k VDD= 5.0V RB=510k IDD_I2C Disable 2.5 - - 4.0 ㎃ CS - 10 100 ㎊ RS - 200 1000 Ω 0.2 - - ㎊ - 12 - - 30M - - 100 80 - VDD = 3.3V 200 510 820 VDD = 5.0V 330 620 1200 IDD Current consumption Note1 IDD_I2C Output maximum sink current Sense input capacitance range IOUT R_SB=0 R_SB=0 R_SB=3M R_SB=3M RI2C =20k RI2C =30k TA = 25℃ ㎂ mA ㎂ Note2 Sense input resistance range Minimum detective capacitance difference Output impedance (open drain) Self calibration time after system reset Recommended bias resistance range Note3 ΔC Zo TCAL RB Cs = 10pF, CDEG = 200pF (I2C default sensitivity select) ΔC > 0.2pF, Cs = 10pF, (I2C default sensitivity select) ΔC < 0.2pF, Cs = 10pF, (I2C default sensitivity select) VDD = 3.3V RB = 510k VDD = 5.0V RB = 510k Ω ms kΩ Maximum bias CB_MAX 820 1000 pF capacitance Recommended sync RSYNC 1 2 20 MΩ resistance range Note 1 : In case of SCL frequency is 500kHz. Note 2 : The sensitivity can be increased with lower CS value. The recommended value of CS is 10pF when using 3T PC(Poly Carbonate) cover and 10 ㎜ x 7 ㎜ touch pattern. Note 3 : The lower RB is recommended in noisy condition. ADSemiconductor Confidential 4/36 ADSemiconductor® TSM12 (12-CH Auto Sensitivity Calibration Capacitive Touch Sensor) 6 Implementation of TSM12 6.1 RBIAS & SRBIAS implementation VDD CB RBIAS