參數(shù)資料
型號: MAX1233ETI+T
廠商: Maxim Integrated Products
文件頁數(shù): 17/44頁
文件大?。?/td> 0K
描述: IC CNTRLR TOUCH 28-TQFN
其它有關(guān)文件: Automotive Product Guide
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
類型: 電阻
觸摸面板接口: 4 線
輸入數(shù)/鍵: 1,4 x 4 小鍵盤
分辨率(位): 8,10,12 b
數(shù)據(jù)接口: MICROWIRE?,QSPI?,串行,SPI?
數(shù)據(jù)速率/采樣率 (SPS,BPS): 50k
電壓基準: 外部,內(nèi)部
電源電壓: 2.7 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-TQFN-EP(5x5)
包裝: 帶卷 (TR)
MAX1233/MAX1234
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
24
______________________________________________________________________________________
KEYSTS1
KEYSTS0
READ FUNCTION
WRITE FUNCTION
00
No button press detected;
scan or debounce in progress
Scans keypad once and waits to detect a button press. Upon
detection, issues an interrupt and waits for the host’s instruction
before scanning.
10
Button press detected;
scan or debounce in progress
Stops any ongoing scan and waits to detect a button press. Upon
detection, issues an interrupt and scans the keypad.
01
No button press detected;
data available
Stops any ongoing scan and waits to detect a button press. Upon
detection, issues an interrupt and waits for the host’s instruction
before scanning.
11
Button press detected;
data available
Stops any ongoing scan and powers down the button press
detection circuit. No button presses are detected in this mode.
Table 19. KEYSTS1/KEYSTS0 Functions
DBN2
DBN1
DBN0
FUNCTION (ms)
0
Debounce time: 2
0
1
Debounce time: 10
0
1
0
Debounce time: 20
0
1
Debounce time: 50
1
0
Debounce time: 60
1
0
1
Debounce time: 80
1
0
Debounce time: 100
1
Debounce time: 120
Table 20. Keypad Debounce Time Control
BIT
NAME
DESCRIPTION
15 (MSB)
KEYSTS1
Read: keypad interrupt status; Write: set interrupt initiated keypad scans
14
KEYSTS0
Read: keypad scan status; Write: stop keypad scan
13
DBN2
Keypad debounce time control
12
DBN1
Keypad debounce time control
11
DBN0
Keypad debounce time control
10
HLD2
Keypad hold time control
9
HLD1
Keypad hold time control
8
HLD0
Keypad hold time control
[7:0]
0
Reserved
Table 18. Keypad Control Register Bit Descriptions (Write 0x0041/Read 0x8041)
BIT15
BIT14
BIT13
BIT12
BIT11
BIT10
BIT9
BIT8
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
KEYSTS1
KEYSTS0
DBN2
DBN1
DBN0
HLD2
HLD
0000000
0
Table 17. Keypad Control Register (Write 0x0041/Read 0x8041)
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