CY8C20121-SX1I Cypress Semiconductor Corp, CY8C20121-SX1I Datasheet - Page 11

• 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

This register is used to enable CapSense inputs. This register should be set before setting finger threshold (0x66, 0x67) and
IDAC setting (0x70, 0x71) registers.
8.4 DIG_ENABLE
GPO_ENABLE: 08h
(Writable only in Setup mode)
This register is used to enable DIG (Digital) outputs. If DIG output is enabled, the strong drive mode register (11h) should also be set.
If DIG output is disabled the drive mode of these pins is High Z.
8.5 SET_STRONG_DM
SET_STRONG_DM: 11h
(Writable only in Setup mode)
This register sets strong drive mode for DIG (Digital) outputs. To set strong drive mode the pin should be enabled as GP output.
Document Number: 001-53516 Rev. *E
Bit
1:0
Bit
1:0
Bit
1:0
Access: FD
Access: FD
Access: FD
Access: FD
1 Button
Bit Name
2 Button
Bit Name
1 Button
Bit Name
2 Button
Bit Name
Select DIG Output Register
Sets Strong Drive Mode for DIG Outputs.
Name
CS [1:0]
Name
DIG [1:0]
Name
DM [1:0]
7
7
7
7
6
6
6
6
5
5
5
5
Description
These bits are used to enable CapSense inputs.
0
1
Description
These bits are used to enable DIG outputs.
0
1
Description
These bits are used to set the strong drive mode to DIG outputs.
0
1
4
4
4
4
Disable CapSense input
Enable CapSense input
Strong drive mode not set
Strong drive mode set
Disable DIG output
Enable DIG output
3
3
3
3
2
2
2
2
CY8C20111, CY8C20121
1
1
1
1
DIG [1:0]
DM [1:0]
RW:03
RW:03
RW:01
DIG[0]
RW:01
DM [0]
0
0
0
0
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