AK4160 Datasheet, PDF (27/40 Pages) Asahi Kasei Microsystems – 16-channel Capacitive Touch Sensor IC

[AK4160]
Charge Current Register (CCn: n=0~15)
Address 0x45-0x54 (W/R) Default 0x00
Description
D7
D6
Charge Current
Reserved Reserved
D5
CCn[5]
D4
CCn[4]
D3
CCn[3]
D2
CCn[2]
D1
CCn[1]
D0
CCn[0]
Bits
Name
Description
D7-D6 Reserved Reserved: This bit should be written “0”.
D5-D0
CCn
The charge current from the terminal CSn is set. 0.556 x CCn x VDD [uA]
When automatic setting is valid (Addr 0x5F ACE bit = “1”), these bits are
updated after the setting is completed. This value may not be correct during the
automatic setting.
These bits can not be changed by the serial I/F in run-mode.
Charge Time Register (CTn: n=0, 2, 4, 6, 8, 10, 12, 14)
Address 0x55-0x5C (W/R) Default 0x00
Description
D7
D6
Charge Time
Reserved CTn+1[2]
D5
CTn+1[1]
D4
CTn+1[0]
D3
Reserved
D2
CTn[2]
D1
CTn[1]
D0
CTn[0]
Bits
Name
Description
D7,D3
D6-D4
Reserved
CTn+1
Reserved: This bit should be written “0”.
The charge time at the terminal CSn is set. 0.25us~32us = 0.25us x 2^CTn
D2-D0
CTn
When automatic setting is valid (Addr 0x5F ACE bit = “1”), these bits are
updated after the setting is completed. This value may not be correct during the
automatic setting.
These bits can not be changed by the serial I/F in run-mode.
GPIO Date Register (GPDT)
Address 0x5D (W/R) Default 0x00
Description
D7
GPIO Data Register
GPDT[7]
D6
GPDT[6]
D5
GPDT[5]
D4
GPDT[4]
D3
GPDT[3]
D2
GPDT[2]
D1
GPDT[1]
D0
GPDT[0]
Bits
D7-D0
Name
GPDT
Description
GPIO Output Data Setting
When the touch status is output (SRC1-0 bits = “01”, “10”, “11”), the output is
valid according to GPDT7-0 bits = “1”.
GPIO Enable Register (GPEN)
Address 0x5E (W/R) Default 0x00
Description
D7
GPIO Enable Register
GPEN[7]
D6
GPEN[6]
D5
GPEN[5]
D4
GPEN[4]
D3
GPEN[3]
D2
GPEN[2]
D1
GPEN[1]
D0
GPEN[0]
Bits
D7-D0
Name
GPEN
Description
GPIO Enable
Exclusive control is provided for the sense terminal select (SCC Register NCH
bit).
When a pin has already been selected as GPIO, the sense terminal selection is
invalid.
MS1313-E-01
- 27 -
2011/11