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參數(shù)資料
| 型號： | AK4184 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | TSC with Keypad Scanner and GPIO Expander |
| 中文描述： | 臺糖與鍵盤掃描儀和GPIO擴展 |
| 文件頁數(shù)： | 25/36頁 |
| 文件大?。?/td> | 597K |
| 代理商： | AK4184 |
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[AK4184]
MS0603-E-00
2007/04
25
■
Keypad Data Register (PAGE 0)
The keypad data register format is shown below. KD1, KD2, KD3, KS1, KS2 and KS3 represent the number of keys
pressed. Table 24 shows a configuration of a 30-key keypad. Data of KD1, KD2, KD3, KS1, KS2 and KS3 returned
as zero represents a no key pressed. The AK4184 keypad scanner can be read out up to three keys simultaneously.
The AK4184 key pad scanner writes the number of keys pressed in the keypad data register. For example: When two
keys are pressed at the same time, the contents of the keypad register are filled with KD1, KD2, KS1, and KS2. KD3
and KS3 are the zero data. When more than four keys are pressed at the same time, error bits (DERR bit and SERR
bit) are set to “1” and KD1, KD2, KD3, KS1, KS2, and KS3 data are set to 31.
The keypad data can be read out either from the KPDATA1 register or the KPDATA2 register. The KPDATA1
register represents the keypad data masked by the keypad column mask register. KPDATA2 register represents the
keypad data masked by both the keypad column mask register and the keypad mask register. KPDATA1 and
KPDATA2 register are cleared after these resisters are read. .
Addr
NAME
D15
D14
D13 D12
D11
D10
00H
KPDATA1 DERR
KD3[4:0]
01H
KPDATA2
SERR
KS3[4:0]
Table 21. Keypad Data Register Format
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
KD2[4:0]
KS2[4:0]
KD1[4:0]
KS1[4:0]
Bits
15
14:10
9:5
4:0
Name
DERR
KD3
KD2
KD1
Description
Keypad scan data error
Keypad scan result 3. can be masked by column mask
Keypad scan result 2. can be masked by column mask
Keypad scan result 1. can be masked by column mask
Table 22. Keypad Data 1 Register (addr: 00H)
Bits
15
14:10
9:5
4:0
Name
SERR
KS3
KS2
KS1
Description
Keypad status data error
Keypad status result 3. can be masked by both keymask and column mask
Keypad status result 2. can be masked by both keymask and column mask
Keypad status result 1. can be masked by both keymask and column mask
Table 23. Keypad Data 2 Register (addr: 01H)
The corresponding number and its keypad layout are shown on Table 24.
R1
#1
R2
#2
R3
#3
R4
#4
R5
#5
Table 24. Keypad to Key number Mapping
C1
C2
#6
#7
#8
#9
#10
C3
#11
#12
#13
#14
#15
C4
#16
#17
#18
#19
#20
C5
#21
#22
#23
#24
#25
C6
#26
#27
#28
#29
#30
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| AK4184VG | TSC with Keypad Scanner and GPIO Expander |
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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 |
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