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PDF CY8C20111 Data sheet ( Hoja de datos )
| Número de pieza | CY8C20111 | |
| Descripción | One Button and Two Button Capacitive Controllers | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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CY8C20111/CY8C20121
CapSense® Express™ – One Button and
Two Button Capacitive Controllers
CapSense® Express™ – One Button and Two Button Capacitive Controllers
Features
■ Capacitive button input tied to a configurable output
❐ Robust sensing algorithm
❐ High sensitivity, low noise
❐ Immunity to RF and AC noise
❐ Low radiated EMC noise
❐ Supports wide range of input capacitance, sensor shapes,
and sizes
■ Target Applications
❐ Printers
❐ Cellular handsets
❐ LCD monitors
❐ Portable DVD players
■ Industry's best configurability
❐ Custom sensor tuning
❐ Output supports strong 20 mA sink current
❐ Output state can be controlled through I2C or directly from
CapSense input state
❐ Run time reconfigurable over I2C
■ Advanced features
❐ Plug-and-play with factory defaults – tuned to support up to
1 mm overlay
❐ Nonvolatile storage of custom settings
❐ Easy integration into existing products – configure output to
match system
❐ No external components required
❐ World class free configuration tool
■ Wide range of operating voltages
❐ 2.45 V to 2.9 V
❐ 3.10 V to 3.6 V
❐ 4.75 V to 5.25 V
■ I2C communication
❐ Supported from 1.8 V
❐ Internal pull-up resistor support option
❐ Data rate up to 400 kbps.
❐ Configurable I2C addressing
■ Industrial temperature range: –40 °C to +85 °C
■ Available in 8-pin SOIC package
Overview
The CapSense® Express™ controllers support two capacitive
sensing (CapSense) buttons and two general purpose outputs in
CY8C20121 and one CapSense button and one general
purpose output in CY8C20111. The device functionality is
configured through the I2C port and can be stored in on-board
nonvolatile memory for automatic loading at power on. The
digital outputs are controlled from CapSense inputs in factory
default settings, but are user configurable for direct control
through I2C.
The four key blocks that make up the CY8C20111 and
CY8C20121 controllers are: a robust capacitive sensing core
with high immunity against radiated and conductive noise,
control registers with nonvolatile storage, configurable outputs,
and I2C communications. The user can configure registers with
parameters needed to adjust the operation and sensitivity of the
CapSense buttons and outputs and permanently store the
settings. The standard I2C serial communication interface allows
the host to configure the device and read sensor information in
real time. I2C address is fully configurable without any external
hardware strapping.
Errata: For information on silicon errata, see “Errata” on page 41. Details include trigger conditions, devices affected, and proposed workaround.
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-53516 Rev. *M
• San Jose, CA 95134-1709 • 408-943-2600
Revised May 19, 2016
1 page  
Pinouts
CY8C20111/CY8C20121
Figure 2. 8-pin SOIC (150 Mils) pinout
CY8C20121 (2 Button)
Pin Definitions
8-pin SOIC
CY8C20121 (2 Button)
Pin No
1
2
3
4
5
6
7
8
Name
VSS
I2C SCL
I2C SDA
CS0
CS1
DIG0
DIG1
VDD
Ground
I2C Clock
I2C Data
CapSense Input
CapSense Input
Digital Output
Digital Output
Supply Voltage
Description
Document Number: 001-53516 Rev. *M
Page 5 of 44
5 Page 
CY8C20111/CY8C20121
Register Map
Name
OUTPUT_PORT
CS_ENABLE
DIG_ENABLE
SET_STRONG_DM
OP_SEL_0
LOGICAL_OPR_INPUT0
OP_SEL_1 [7]
LOGICAL_OPR_INPUT1 [7]
CS_NOISE_TH
CS_BL_UPD_TH
CS_SETL_TIME
CS_OTH_SET
CS_HYSTERISIS
CS_DEBOUNCE
CS_NEG_NOISE_TH
CS_LOW_BL_RST
CS_FILTERING
CS_SCAN_POS_0
CS_SCAN_POS_1 [7]
CS_FINGER_TH_0
CS_FINGER_TH_1 [7]
CS_IDAC_0
CS_IDAC_1 [7]
I2C_ADDR_LOCK
DEVICE_ID
DEVICE_STATUS
I2C_ADDR_DM
CS_READ_BUTTON
CS_READ_BLM
CS_READ_BLL
CS_READ_DIFFM
CS_READ_DIFFL
CS_READ_RAWM
CS_READ_RAWL
Register
Address
(in Hex)
04
07
08
11
1C
1E
21
23
4E
4F
50
51
52
53
54
55
56
5C
5D
66
67
70
71
79
7A
7B
7C
81
82
83
84
85
86
87
Access
W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
R
R
RW
RW
R
R
R
R
R
R
Writable
Only in
Setup
Mode [5]
Factory Default
Values of Registers
(in Hex)
1 Button 2 Button
I2C Max ACK
Time in
Normal Mode
(ms) [6]
I2C Max ACK
Time in Setup
Mode (ms) [6]
Page No.
– 01 03
0.10
– 13
Yes 01
03
–
11 13
Yes 01
03
–
11 14
Yes 01
03
–
11 14
– 82 82
0.12
11 15
– 01 01
0.12
11 15
–
82 0.12
11 15
–
02 0.12
11 15
– 28 28
0.11
11 16
– 64 64
0.11
11 16
Yes A0
A0
–
35 16
Yes 00
00
–
35 17
– 0A 0A
0.11
11 17
– 03 03
0.11
11 18
– 14 14
0.11
11 18
– 14 14
0.11
11 18
– 20 20
0.11
11 19
Yes 00
00
–
11 19
Yes
01 –
11 19
– 64 64
0.14
11 20
–
64 0.14
11 20
– 0A 0A
0.14
11 20
–
0A 0.14
11 20
– 01 01
0.11
11 20
– 11 21
0.11
11 21
– 03 03
0.11
11 21
– 80 80
0.11
11 22
– 81 81
0.12
11 22
– NA NA
0.12
11 23
– NA NA
0.12
11 23
– NA NA
0.12
11 23
– NA NA
0.12
11 23
– NA NA
0.12
11 23
– NA NA
0.12
11 23
Notes
5. These registers are writable only after entering into setup mode. All other registers are available for read and write in normal and setup mode.
6. The Ack times specified are 1x I2C Ack times.
7. These registers are available only in CY8C20121 device.
Document Number: 001-53516 Rev. *M
Page 11 of 44
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CY8C20111.PDF ] | |
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