AK4186 AKM [Asahi Kasei Microsystems], AK4186 Datasheet - Page 17

• Manufacturer Part Number: AK4186
• Description: Low Power Touch Screen Controller with I2C Interface
• Manufacturer: AKM [Asahi Kasei Microsystems]

SLEEP1-0, PD0 bits can be written during a sequential measurement but PANEL bit will not be changed.
2. Sequence Command Configuration
The AK4186 starts A/D conversion in sequence mode by setting the COUNT, SEQM2-0, INTERVAL2-0 bits of the
register address to 02H. The AK4186 makes six or ten measurements by setting the COUNT bit. The results are used to
calculate the average value, discarding the minimum and maximum values, and the result sets the data register of
sequence mode. If the address 02H is set again during a sequential measurement, this setting is ignored and the AK4186
continues the measurement. The master executes the register read operation to read the measurement data of sequence
mode after confirming the PENIRQN pin turns to “H” (Data Available).
MS1068-E-04
Addr
02H
D7
D6
D5-D4
D3
D2
D1
D0
D7
D6-D4
D3
D2-D0
Bits
Bits
Sequence Command
Register Name
Reserved
SEQM2-0
COUNT
PANEL
Reserved
SLEEP1-0
Reserved
Reserved
Reserved
PD0
INTERVAL2-0
Name
Name
D7
0
Sequence Mode
Panel type Selection
Must write “0”
Sleep Command bits (refer to
Must write “0”
Must write “0”
Must write “0”
Power-down Mode (refer to
Must write “0”
A/D Conversion count
Sampling interval times.
Table 8. Sequence Command Register Format
0: 4-wire (default)
1: 5-wire
00: Normal Mode (default)
01: Sleep Mode 1 (PENIRQN disabled and output “H”. Touch Panel is open.)
10: Sleep Mode 2 (PENIRQN disabled and open. Touch Panel is open.)
11: Reserved
0: Auto Power-down Mode (default)
1: Driver ON Mode
000: X → Y → Z1 → Z2 Scan (only 4-wire Touch Screen) (default)
001: X → Y Scan
010: X Scan
011: Y Scan
100: Z1 → Z2 Scan (only 4-wire Touch Screen)
101: Reserved
110: A-IN (only 4-wire Touch Screen)
111: Reserved
0: 6 times A/D Conversion (default)
1: 10 times A/D Conversion
000: 0μs (default)
010: 10μs
100: 50μs
110: 200μs
SEQM2
Table 9. Sequence Command description
D6
Table 7. Setup Command description
SEQM1
D5
- 17 -
SEQM0
D4
001: 5μs
011: 20μs
101: 100μs
111: 500μs
“■ Power-down
“■ Sleep
COUNT
D3
Description
Description
Mode”)
INTERVAL2
Control”)
D2
INTERAVAL1
D1
INTERVAL0
[AK4186]
D0
2011/03