AK4160 AKM [Asahi Kasei Microsystems], AK4160 Datasheet - Page 28

• Manufacturer Part Number: AK4160
• Description: 16-channel Capacitive Touch Sensor IC
• Manufacturer: AKM [Asahi Kasei Microsystems]

Auto Calibration Control Register (ACC)
These bits can not be changed by the serial I/F in run-mode.
MS1313-E-01
Address 0x5F (W/R) Default 0x06
Auto Calibration Control
D3-D0
Bits
D7
D6
D5
D4
Description
0000-0101
VS[3:0]
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Name
ACE
CCO
RCE
RIM
VS
Lowest Operation
ACE
The automatic setting of the charge current and the charge time is enabled.
The automatic reconfiguration is enabled.
Reference value setting of the reconfiguration
Automatic Setting of the Charge Current Only
The Lowest Operation Voltage Setting
VDD ≥ 1.71V
D7
VDD ≥ 1.9V
VDD ≥ 2.1V
VDD ≥ 2.3V
VDD ≥ 2.5V
VDD ≥ 2.7V
VDD ≥ 2.9V
VDD ≥ 3.1V
VDD ≥ 3.3V
VDD ≥ 3.5V
Table 9. Reference Value of Automatic Setting
0: The first measurement value is set as the initial value of the reference after
1: 31/32 of the first measurement value is set as the initial value of the reference
The charge time is not automatically configured, and it is set to the value of CT
register. Only charge current is automatically set.
The best charge current and charge time in the power supply voltage selected
with these bits are automatically configured.
At the power supply voltage selected by these bits, the charge current and the
charge time are automatically optimized.
The initial value is “0110”. (1.71V ~1.9V)
Reserved
The charge current and the charge time is set automatically at the first
measurement, and each register is updated. When the function of automatic
setting is valid, the VS3-0 bits must be configured.
The reconfiguration is operated automatically when the measurement data is
over the upper limit.
Voltage
after reconfiguration.
reconfiguration.
RCE
D6
- 28 -
Upper Limit Voltage of
RIM
D5
Sense Terminals
Reserved
1.50V
1.70V
1.90V
2.10V
2.30V
2.50V
2.70V
2.90V
3.10V
3.30V
CCO
D4
Description
VS[3]
D3
Setting Voltage
VS[2]
D2
Reserved
1.35V
1.53V
1.71V
1.89V
2.07V
2.25V
2.43V
2.61V
2.79V
2.97V
VS[1]
D1
[AK4160]
VS[0]
2011/11
D0