AK4160 AKM [Asahi Kasei Microsystems], AK4160 Datasheet - Page 24

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

Threshold Register (THn: n=0~15)
The threshold register should not be updated in run-mode.
When the sense terminal is set to GPIO, the threshold register becomes a GPIO control register GPCn (n=0~7).
GPIO Control Register (GPCn: n=0~7)
CS8~CS15 can be used as GPIO by setting GPIO enable register (Addr 0x5E). In this case, the threshold register works as
the GPIO control register. The bit allocation of the GPIO control register at the input setting (DIR bit = “0”) is different
from the allocation at the output setting (DIR bit = “1”).
MS1313-E-01
Address 0x25/0x27/…/0x43 (W/R) Default 0x00
Address 0x26/0x28/…/0x44 (W/R) Default 0x00
CSn Release Threshold
CSn Touch Threshold
D6-D0
D6-D0
Bits
Bits
D7
D7
Description
Description
0x2B – 0x2C
0x2D – 0x2E
0x3B – 0x3C
0x3D – 0x3E
0x29 – 0x2A
0x39 – 0x3A
0x2F – 0x30
0x3F – 0x40
0x25 – 0x26
0x27 – 0x28
0x31 – 0x32
0x33 – 0x34
0x35 – 0x36
0x37 – 0x38
0x41 – 0x42
0x43 – 0x44
Address
Name
T8Xn
Name
R8Xn
RTn
TTn
Table 7. CS Threshold Register and GPIO Control Register
R8Xn
T8Xn
The touch threshold of the terminal CSn is increased by a factor of eight.
The touch threshold of the terminal CSn is set.
The release threshold of the terminal CSn is increased by a factor of eight.
The release threshold of the terminal CSn is set.
D7
D7
CS10 Threshold Register
CS11 Threshold Register
CS12 Threshold Register
CS13 Threshold Register
CS14 Threshold Register
CS15 Threshold Register
CS0 Threshold Register
CS1 Threshold Register
CS2 Threshold Register
CS3 Threshold Register
CS4 Threshold Register
CS5 Threshold Register
CS6 Threshold Register
CS7 Threshold Register
CS8 Threshold Register
CS9 Threshold Register
T8Xn=0: The threshold is 0~127 (Step 1)
T8Xn=1: The threshold is 0~1016 (Step 8)
R8Xn=0: The threshold is 0~127 (Step 1)
R8Xn=1: The threshold is 0~1016 (Step 8)
TTn[6]
RTn[6]
D6
D6
CS
RTn[5]
TTn[5]
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D5
D5
TTn[4]
RTn[4]
D4
D4
Description
Description
GPIO7 Control Register
GPIO6 Control Register
GPIO5 Control Register
GPIO4 Control Register
GPIO3 Control Register
GPIO2 Control Register
GPIO1 Control Register
GPIO0 Control Register
RTn[3]
TTn[3]
D3
D3
GPIO
-
-
-
-
-
-
-
-
TTn[2]
RTn[2]
D2
D2
RTn[1]
TTn[1]
D1
D1
[AK4160]
TTn[0]
RTn[0]
2011/11
D0
D0