參數(shù)資料
型號(hào)： AK4184
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： TSC with Keypad Scanner and GPIO Expander
中文描述： 臺(tái)糖與鍵盤掃描儀和GPIO擴(kuò)展
文件頁(yè)數(shù)： 22/36頁(yè)
文件大?。?/td> 597K
代理商： AK4184
[AK4184]
MS0603-E-00
2007/04
22
Keypad Debounce Scan initiated by keypad activity (Initial : KST1 bit="1", KST0 bit="0"
KEYIRQN
BUSY
Ry
CSN
KPDATA1,2
State
DOUT
Debounce
Scan
HOLD
Debounce
Scan
HOLD
Key Detect
Enable
then wait
Key
Detect
Enable
Key
Detect
Disable
Figure 13. Keypad Debounce Scan initiated by key activity
(Key interrupt enable, key scan initiated by key touch)
■
Keypad Control Register (PAGE 1)
The keypad scanner controller is controlled by the Keypad Control register (Table 12), Keypad Mask register (Table
17 ) and Keypad Column register (Table 19). This register controls the key press interrupt (host scan mode or key-press
scan mode), key-press debounce time interval and hold time. The Keypad Mask register is valid for each key masked
after debounce key scan. The Keypad Column Mask register stops a key scan of a selected key column and is disabled
for the detection of key press.
Addr
NAME
D15
MSB
00H
KEY
KST1
KST0
DBN[2:0]
Table 11. Keypad Control Register Format
Bits
Name
Description
15
KST1
Key Interrupt enable signal
0 : disable
1 : enable
14
KST0
Key scan initiated by Host/Key
0 : scan starts by key-press
1 : scan starts by Host command
13:11
DBN
Keypad debounce time interval
10:8
HLD
Keypad hold time control
7:0
Reserved
Table 12. Keypad Control Register (Write)
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
LSB
0
HLD[2:0]
0
0
0
0
0
0
0
The KST1 and KST0 bits can be read to determine the state of keypad scanner. The KST1 and KST0 bits and their
descriptions are described in Table 13.
KST1 KST0 Description
0
0
0
1
1
0
1
1
No detect
Wait for the command initiated by Host
Keypad Debounce scan is busy.
Data available
Table 13. KST bit (Read)
相關(guān)PDF資料
PDF描述
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
AK4250 Output Coupling Capacitor-less Video Amp with LPF
AK4250VU Output Coupling Capacitor-less Video Amp with LPF
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4184A 制造商:AKM 制造商全稱:AKM 功能描述:TSC with Keypad Scanner and GPIO Expander
AK4184AEG 制造商:AKM 制造商全稱:AKM 功能描述:TSC with Keypad Scanner and GPIO Expander
AK4184VG 制造商:AKM 制造商全稱:AKM 功能描述:TSC with Keypad Scanner and GPIO Expander
AK4185 制造商:AKM 制造商全稱:AKM 功能描述:Low Power Touch Screen Controller with SPI? Interface
AK4185_10 制造商:AKM 制造商全稱:AKM 功能描述:Low Power Touch Screen Controller with SPI? Interface
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*