AK4160 Datasheet, PDF (33/40 Pages) Asahi Kasei Microsystems – 16-channel Capacitive Touch Sensor IC

[AK4160]
IRQ Mask Register (IRQMn: n=0~2)
Address 0x66/0x6A/0x6E (W/R) Default 0x00
Description
D7
D6
IRQ Mask
IRQM[15] IRQM[14]
D5
IRQM[13]
D4
IRQM[12]
D3
IRQM[11]
D2
IRQM[10]
D1
IRQM[9]
D0
IRQM[8]
Address 0x67/0x6B/0x6F (W/R) Default 0x00
Description
D7
D6
IRQ Mask
IRQM[7] IRQM[6]
D5
IRQM[5]
D4
IRQM[4]
D3
IRQM[3]
D2
IRQM[2]
D1
IRQM[1]
D0
IRQM[0]
Bits
Name
Description
15-0
IRQM
Intended channel setting of Touch/Release Interrupt
0: No Target of Interrupt
1: Target of Interrupt
Noise Filter Control Register (NFC)
Address 0x70 (W/R) Default 0x00
Description
D7
D6
D5
D4
D3
D2
D1
D0
Noise Filter Control
NF2S[1] NF2S[0] NF1S[1] NF1S[0] RIM[1] RIM[0]
LCH
RCH
Bits
Name
Description
D7-D6
NF2S
Number of samples at the noise filter (the second filter)
00: 4 samples
01: 6 samples
10: 10 samples
11: 18 samples
D5-D4
NF1S
Number of samples at the noise filter (the first filter)
00: 4 samples
01: 6 samples
10: 10 samples
11: 18 samples
D3-D2
RIM
Initial Reference Setting Selection
00: User Setting (reference value set by Addr 0x80-0x9F REFn bits)
01: First Measurement Value as a Reference
10: 31/32 of First Measurement Value as a Reference
11: 30/32 of First Measurement Value as a Reference
D1
LCH
Priority Setting of sense terminals without multi touch function
0: The sense terminal to touch most strongly is selected.
1: The sense terminal of the youngest number is selected.
D0
RCH
Release Operation Setting of sense terminals without multi touch function
0: The next touch judgment is not executed until all the sense terminals are
released once.
1: When the sense terminal that is judged as touched is released, the next touch
judgment is executed.
These bits can not be changed by the serial I/F in run-mode.
MS1313-E-01
- 33 -
2011/11