CY8C20111_11 CYPRESS [Cypress Semiconductor], CY8C20111_11 Datasheet - Page 2

• Manufacturer Part Number: CY8C20111_11
• Manufacturer: CYPRESS [Cypress Semiconductor]

3. Contents
Pinouts .............................................................................. 3
Typical Circuits ................................................................. 4
Operating Modes .............................................................. 6
I2C Interface ...................................................................... 6
Registers ........................................................................... 7
Document Number: 001-53516 Rev. *G
Circuit-1: One Button and One LED[1] ........................ 4
Circuit-2: One Button and One LED with
I2C Interface ................................................................ 4
Circuit-3: Two Buttons and Two LEDs with
I2C Interface ................................................................ 5
Circuit-4: Compatibility with 1.8 V I2C Signaling[2] ..... 5
Circuit-5: Powering Down CapSense Express
Device for Low Power Requirements .......................... 6
Normal Mode ............................................................... 6
Setup Mode ................................................................. 6
I2C Device Addressing ................................................ 6
I2C Clock Stretching .................................................... 7
Format for Register Write and Read ........................... 7
OUTPUT_STATUS ................................................... 10
OUTPUT_PORT ........................................................ 10
CS_ENABLE ............................................................. 10
DIG_ENABLE ............................................................ 11
SET_STRONG_DM .................................................. 11
OP_SEL_x ................................................................. 13
LOGICAL_OPR_INPUTx .......................................... 13
CS_NOISE_TH ......................................................... 14
CS_BL_UPD_TH ....................................................... 14
CS_SETL_TIME ........................................................ 14
CS_OTH_SET ........................................................... 15
CS_HYSTERISIS ...................................................... 15
CS_DEBOUNCE ....................................................... 16
CS_NEG_NOISE_TH ................................................ 16
CS_LOW_BL_RST .................................................... 16
CS_FILTERING ......................................................... 17
CS_SCAN_POS_x .................................................... 17
CS_FINGER_TH_x ................................................... 18
CS_IDAC_x ............................................................... 18
I2C_ADDR_LOCK ..................................................... 18
DEVICE_ID ............................................................... 19
DEVICE_STATUS ..................................................... 19
I2C_ADDR_DM ......................................................... 20
CS_READ_BUTTON ................................................. 20
Layout Guidelines and Best Practices ......................... 24
Operating Voltages ......................................................... 27
CapSense Constraints ................................................... 27
Electrical Specifications ................................................ 28
Examples of Frequently Used I2C Commands ............ 33
Ordering Information ...................................................... 34
Thermal Impedances ...................................................... 34
Solder Reflow Specifications ........................................ 34
Package Diagram ............................................................ 35
Acronyms ........................................................................ 36
Acronyms Used .............................................................. 36
Document Conventions ................................................. 36
Glossary .......................................................................... 37
Document History Page ................................................. 42
Sales, Solutions, and Legal Information ...................... 43
CS_READ_BLx ......................................................... 21
CS_READ_DIFFx ...................................................... 21
CS_READ_RAWx ..................................................... 21
CS_READ_STATUS ................................................. 22
COMMAND_REG ...................................................... 22
Example PCB Layout Design with
Two CapSense Buttons and Two LEDs .................... 26
Absolute Maximum Ratings ....................................... 28
Operating Temperature ............................................. 28
DC Electrical Characteristics ..................................... 28
DC Chip Level Specifications .................................... 28
DC GPIO Specifications ............................................ 28
DC POR and LVD Specifications .............................. 29
DC Flash Write Specifications ................................... 29
DC I2C Specifications ............................................... 30
CapSense Electrical Characteristics ......................... 30
AC Electrical Specifications ....................................... 31
AC Chip-Level Specifications .................................... 31
AC GPIO Specifications ............................................ 31
AC I
Ordering Code Definitions ......................................... 34
Units of Measure ....................................................... 36
Numeric Conventions ................................................ 36
Worldwide Sales and Design Support ....................... 43
Products .................................................................... 43
PSoC Solutions ......................................................... 43
2
C Specifications ................................................ 31
CY8C20111, CY8C20121
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