CY8C20121-SX1I Cypress Semiconductor Corp, CY8C20121-SX1I Datasheet - Page 21

• Manufacturer Part Number: CY8C20121-SX1I
• Description: CY8C20121-SX1I
• Manufacturer: Cypress Semiconductor Corp
• Series: CapSense Express™ CY8C20xxxr

Specifications of CY8C20121-SX1I

• Controller Type: Capacitive Sensing Controller
• Interface: I²C
• Voltage - Supply: 2.4 V ~ 5.25 V
• Current - Supply: 1.5mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Processor Series: CY8C201xx
• Core: M8C
• Program Memory Type: Flash
• Interface Type: I2C
• Operating Supply Voltage: 2.4 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: CY3218-CAPEXP1
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.25 CS_READ_BLx
Reading from this register returns the 2-byte current baseline value for the selected CapSense input.
8.26 CS_READ_DIFFx
Reading from this register returns the 2-byte current difference count for the selected CapSense input.
8.27 CS_READ_RAWx
Reading from this register returns the 2-byte current raw count value for the selected CapSense input.
Document Number: 001-53516 Rev. *E
CS_READ_BLM: 82h
Bit
7:0
CS_READ_DIFFM: 82h
Bit
7:0
CS_READ_RAWM: 82h
Bit
7:0
Access: FD
Access: FD
Access: FD
1/2 Button
1/2 Button
1/2 Button
Bit Name
Bit Name
Bit Name
Baseline Value MSB/LSB Registers
Difference Count Value MSB/LSB Registers
Difference Count Value MSB/LSB Registers
Name
Name
BL [7:0]
DIF [7:0]
Name
RC [7:0]
7
7
7
CS_READ_BLL: 83h
CS_READ_DIFFL: 83h
CS_READ_RAWL: 83h
6
6
6
5
5
5
These bits represent the baseline value.
These bits represent the sensor difference count.
These bits represent the raw count value.
Description
Description
Description
4
4
4
DIF [7:0]
RC [7:0]
BL [7:0]
R: 00
R: 00
R: 00
3
3
3
2
2
2
CY8C20111, CY8C20121
1
1
1
0
0
0
Page 21 of 43
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