- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385090 > AK4183 (Asahi Kasei Microsystems Co.,Ltd) I2C Touch Screen Controller PDF資料下載
參數(shù)資料
| 型號： | AK4183 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | I2C Touch Screen Controller |
| 中文描述： | 觸摸屏控制器的I2C |
| 文件頁數(shù)： | 13/17頁 |
| 文件大小： | 173K |
| 代理商： | AK4183 |
ASAHI KASEI
[AK4183]
WRITE Operation Sequence (Figure 13)
The selection of channel input of AK4183 is determined by a command byte. The timing of the driver switch on is 18
th
falling edge
of SCL regardless PD0 bit when accelerate command (A2= “0”) is sent. The accelerate command is to accelerate the timing of
desired driver SW ON to ensure that AK4183 needs more settling time. As for actually sampling is on the time of READ operation,
it becomes possible to take settling time long even when the impedance of the touch screen is large.
MS0500-E-00
2006/04
13
AK4183
ACK
0
Touch Driver SW
AK4183
ACK
S
X1
A2=0, PD0=0 or 1
A2=1, PD0=1
A2=1, PD0=0
A2
PD0
STOP
MODE
A1
A0
X2
CAD0
0
19
I
II
III
IV
Command Byte
SCL
SDA
START
1 0 0
0 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1 0 0
R/ W
Address Byte
Figure 13 write operation and Driver SW timing
READ Operation Sequence (Figure. 14)
A/D conversion is synchronized with SCL. Sampling time is the one SCL clock period (SCL7
↓～
SCL8
↓
) on the end of writing
address byte and then hold. A/D conversion is held on the next 12 SCL period (except MASTER ACK) .The readout sequence is
that after command byte has been sent, AK4183 respond with acknowledge if the address matches. The MSB data byte will follow
(D11
～
D4) then issued acknowledge by master. The LSB data byte (D3
～
D0, followed four “0”) will be followed by NOT
acknowledge bit (NACK) from master in order to terminate the read transfer. The master will then issued STOP that ends read
operation or Repeated Start condition that keeps write or read operation. The master will issue Repeated Start Condition or START
condition followed by read operation again. AK4183 repeats A/D data updated [continuous read operation]. Master must issue
STOP condition after terminating the last read out of A/D data.
Address Byte
Data Byte (MSB)
Data Byte (LSB)
MASTER
ACK
MASTER
NACK
0
“H”
A2=“0” or A2=“1” , PD0=“1”
A2=“1”, PD0=“0”
Sampling
AD conversion
0
A2=“0”, PD0=“0”
28
V
VI
SCL
SDA
START
1 0 0
1 0
CAD0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1 0 0
AK4183
ACK
D11
D10
D9
D8
D7
D6
D4
D5
R/ W
19
20
21
22
23
24
25
26
27
D3
D2
D1
D0
0
0
0
1
0
Touch Driver SW
Repeated START
IV
Figure 14 Read data Sequence
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4183VT | I2C Touch Screen Controller |
| AK4184 | TSC with Keypad Scanner and GPIO Expander |
| AK4184VG | TSC with Keypad Scanner and GPIO Expander |
| AK4220 | 7:3 Audio Switch and 6:3 Video Switch |
| AK4220VQ | 7:3 Audio Switch and 6:3 Video Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4183_08 | 制造商:AKM 制造商全稱:AKM 功能描述:I2C Touch Screen Controller |
| AK4183KT | 制造商:AKM 制造商全稱:AKM 功能描述:I2C Touch Screen Controller |
| AK4183VT | 制造商:AKM 制造商全稱:AKM 功能描述:I2C Touch Screen Controller |
| AK4184 | 制造商:AKM 制造商全稱:AKM 功能描述:Analog I/F IC which includes 4-wire resistive Touch Screen Controller |
| AK4184A | 制造商:AKM 制造商全稱:AKM 功能描述:TSC with Keypad Scanner and GPIO Expander |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。