BS801B HOLTEK [Holtek Semiconductor Inc], BS801B Datasheet

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BS801B

Manufacturer Part Number
BS801B
Description
Touch Key
Manufacturer
HOLTEK [Holtek Semiconductor Inc]
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BS801B
Manufacturer:
HOLTEK/合泰
Quantity:
20 000
Part Number:
BS801B
0
Features
General Description
The BS801B/02B/04B/06B/08B are a range of 1 to 8 key
touch key devices which can detect human body con-
tact using external touch pads. The high level of device
integration enable applications to be implemented with
a minimum number of external components.
The BS804B and BS808B are equipped with a One-line
serial interface to allow easy communication with an exter-
nal MCU for device setup and for touch pin monitoring pur-
poses.
Selection Table
Rev. 1.00
Part. No.
BS801B
BS802B
BS804B
BS806B
BS808B
Operating voltage: 2.2V~5.5V
Ultra low standby current: 1.5 A at 3V
Auto-calibration
High reliability touch detections
High PSRR
Touch
1-Key
2-Key
4-Key
6-Key
8-Key
Keys
Standby Current at 3V
One-Key
Wake-up
1.5 A
1.5 A
1.5 A
1.5 A
Wake-up
Any-key
2.0 A
3.0 A
4.0 A
5.0 A
BS801B/02B/04B/06B/08B
Level-Hold
Level-Hold
Level-Hold
Level-Hold
Level-Hold
or Toggle
or Toggle
or Toggle
Output
1
Type
Key
Special internal circuitry is also employed to ensure
excellent power noise rejection to reduce the possibility
of false detections, increasing the touch switch applica-
tion reliability under adverse environmental conditions.
With auto-calibration, low standby current and a choice
of wake-up features, this range of touch key devices
provides a simple and effective means of implementing
touch switches in a wide variety of applications.
Output type: Level-hold or Toggle
One-key or Any-key Wake-up Mode
Wake-up Mode set by pins or serial command
Open drain NMOS output
Key status monitored using pins or serial bus
20SOP/SSOP
Package
SOT23-6
16NSOP
16NSOP
16NSOP
8SOP
8SOP
Interface
Serial
Touch Key
Calibration
July 7, 2009
Auto

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BS801B Summary of contents

Page 1

... Auto-calibration High reliability touch detections High PSRR General Description The BS801B/02B/04B/06B/08B are a range key touch key devices which can detect human body con- tact using external touch pads. The high level of device integration enable applications to be implemented with a minimum number of external components. ...

Page 2

... Internal circuitry ensures that this pull high resistor will not BS804B consume current even if the input is low. Open: Level-Hold output Low: Toggle output Note important that the logic level of the OKW and LHF pins do not change state after power-on. Rev. 1.00 BS801B/02B/04B/06B/08B Description Description 2 July 7, 2009 ...

Page 3

... Standby Current, Any Key I STB Wake-up I Operating Current DD V Input High Voltage IH V Input Low Voltage IL I Sink Current OL R Pull-high Resistance PH Rev. 1.00 BS801B/02B/04B/06B/08B +6.0V Storage Temperature ........................... 125 C SS +0.3V Operating Temperature .......................... Total.............................................................. 80mA OH Test Conditions Min. V Conditions DD 2 load 3V No load ...

Page 4

... Standby Current - I STB1 One-key Wake-up Standby Current - I STB2 Any-Key Wake-up I Operating Current DD V Input High Voltage IH V Input Low Voltage IL I Sink Current OL R Pull-high Resistance PH Rev. 1.00 BS801B/02B/04B/06B/08B Test Conditions Min. V Conditions DD 2 load 3V No load 3V No load 0. =0. Test Conditions Min ...

Page 5

... Mode and the Normal Mode. After the device is powered up it will automatically enter the Standby Mode to con- serve power. The BS801B and BS802B devices can then be woken up by touching any of their Keyn pins. The BS804B, BS806B and BS808B devices can how- ever be woken up by either a One-key Wake-up using Key0 Any-key Wake-up ...

Page 6

... Normal Mode and await subsequent switch detections on all their Keyn pins. It will remain in the Nor- mal Mode for about 10 seconds for the BS801B and BS802B devices and for about 20 seconds for the other devices and if no further detections are made during this time will return to the Standby Mode ...

Page 7

... SCD clock period is about about certain time is required for the MCU to transmit three or more pulses to inform the device that it desires to Rev. 1.00 BS801B/02B/04B/06B/08B read the key status. After this time has elapsed the de- vice will then transmit the data bits, D0~Dn. Device ...

Page 8

... BS80xB device. Therefore the sensitivity will vary according to the actual PCB layout and design. Rev. 1.00 BS801B/02B/04B/06B/08B An external capacitor, Cs, connected to the Cref pin, is used to set the overall sensitivity of all pins. Some of the most important factors affecting sensitivity are the fol- ...

Page 9

... Note: If the output is connected to an MCU input with an internal pull high resistor then the pull high resistor on the ap- plication circuit is not required. Rev. 1.00 BS801B/02B/04B/06B/08B VDD VDD 0.1uF R VDD Kout LHF BS801B VDD VDD 0.1uF R VDD Kout0 R VDD Kout1 LHF BS802B VDD VDD ...

Page 10

... Touch Key0 . . . Touch Key7 Cs 0pF~ 10pF Note: If the output is connected to an MCU input with an internal pull high resistor then the pull high resistor on the ap- plication circuit is not required. Rev. 1.00 BS801B/02B/04B/06B/08B VDD VDD Key0 . 0.1uF . . R Key5 VDD Kout0 Cref . R . VDD ...

Page 11

... Package Information 8-pin SOP (150mil) Outline Dimensions MS-012 Symbol Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mil Min. Nom. 228 150 12 188 Max. 244 157 20 197 July 7, 2009 ...

Page 12

... NSOP (150mil) Outline Dimensions MS-012 Symbol Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mil Min. Nom. 228 150 12 386 Max. 244 157 20 394 July 7, 2009 ...

Page 13

... SOP (300mil) Outline Dimensions MS-013 Symbol Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mil Min. Nom. 393 256 12 496 Max. 419 300 20 512 104 July 7, 2009 ...

Page 14

... SSOP (150mil) Outline Dimensions Symbol Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mil Min. Nom. 228 150 8 335 Max. 244 158 12 347 July 7, 2009 ...

Page 15

... SOT23-6 Outline Dimensions Symbol Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mm Min. Nom. 1.0 0.7 0.35 0.1 2.7 1.4 1.9 2.6 0. Max. 1.3 0.1 0.9 0.50 0.25 3.1 1.8 3.0 9 July 7, 2009 ...

Page 16

... Key Slit Width T1 Space Between Flange T2 Reel Thickness SOP 16N (150mil) Symbol Description A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter D Key Slit Width T1 Space Between Flange T2 Reel Thickness Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mm 330.0 1.0 100.0 1.5 +0.5/-0.2 13.0 2.0 0.5 +0.3/-0.2 12.8 18.2 0.2 Dimensions in mm 330.0 1.0 100.0 1.5 +0.5/-0.2 13.0 2.0 0.5 +0.3/-0.2 16.8 22.2 0.2 16 July 7, 2009 ...

Page 17

... Key Slit Width T1 Space Between Flange T2 Reel Thickness SOT23-6 Symbol Description A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter D Key Slit Width T1 Space Between Flange T2 Reel Thickness Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mm 330.0 1.0 100.0 1.5 +0.5/-0.2 13.0 2.0 0.5 +0.3/-0.2 24.8 30.2 0.2 Dimensions in mm 330.0 1.0 100.0 1.5 +0.5/-0.2 13.0 2.0 0.5 +0.3/-0.2 16.8 22.2 0.2 Dimensions in mm 178.0 1.0 62 ...

Page 18

... Description W Carrier Tape Width P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter D1 Cavity Hole Diameter P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mm +0.3/-0.1 12.0 8.0 0.1 1.75 0.1 5.5 0.1 1.55 0.1 +0.25/-0.00 1.50 4.0 0.1 2.0 0.1 6.4 0.1 5.2 0.1 2.1 0.1 0.30 0.05 9.3 0.1 Dimensions in mm 16.0 0.3 8.0 0.1 1.75 0.1 7.5 0.1 +0.10/-0.00 1.55 +0.25/-0.00 1.50 4.0 0.1 2.0 0.1 6 ...

Page 19

... Description W Carrier Tape Width P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter D1 Cavity Hole Diameter P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mm +0.3/-0.1 24.0 12.0 0.1 1.75 0.10 11.5 0.1 +0.1/-0.0 1.5 +0.25/-0.00 1.50 4.0 0.1 2.0 0.1 10.8 0.1 13.3 0.1 3.2 0.1 0.30 0.05 21.3 0.1 Dimensions in mm +0.3/-0.1 16.0 8.0 0.1 1.75 0.10 7.5 0.1 +0.1/-0.0 1.5 +0.25/-0.00 1.50 4 ...

Page 20

... Description W Carrier Tape Width P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter D1 Cavity Hole Diameter P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev. 1.00 BS801B/02B/04B/06B/08B Dimensions in mm 8.0 0.3 4.0 0.1 1.75 0.10 3.50 0.05 +0.1/-0.0 1.5 +0.1/-0.0 1.5 4.0 0.1 2.00 0.05 3.15 0.10 3.2 0.1 1.4 0.1 0.20 0.03 5.3 0.1 20 July 7, 2009 ...

Page 21

... Holtek s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 BS801B/02B/04B/06B/08B 21 July 7, 2009 ...

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