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參數(shù)資料
型號(hào)： TSC2301IPAGG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： GREEN, PLASTIC, TQFP-64
文件頁(yè)數(shù)： 62/95頁(yè)
文件大小： 1322K
代理商： TSC2301IPAGG4
www.ti.com
OPERATION - KEYPAD INTERFACE
Issue Interrupt
KBIRQ
Start Clock
Store Keypad scan
results in KPData
Register
Keypad
Touch
Turn off clock
Reset KBIRQ and Scan
Trigger
Done
Scan and
debounce keys
TSC2301
SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004
The TSC2301 contains a keypad interface that is suitable for use with matrix keypads up to 4 x 4 keys. A control
register, the keypad control register, is used to set the scan rate for the keypad and de-bounce times. There is
also a keypad mask register which allows certain keys to be masked from being read, or from causing the
TSC2301 to detect a key-press on selected keys. The results of keypad scans are placed in the keypad data
register.
When a column line (keypad input) is tied to logic high, pressing on all four keys connected to that column is
sensed. For example, if C1 is tied high, pressing on keys 0, 4, 8, and 12 is detected in the keypad data register.
This capability is used to extend the keypad interface beyond 4 x 4 keypads.
When a key-press is detected by the TSC2301, it automatically scans the keypad and de-bounces the key-press.
It then drives KBIRQ low. All keys pressed at the time of the scan are then reflected in the keypad data register.
This mode is shown in Figure 73.
Keypad Scan KBRIQ Initiated
Figure 73. Keypad Scan Initiated by Keypress
65
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TSC2301IPAGR 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
TSC2301IPAGRG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
TSC2301IZQZ 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
TSC2301IZQZR 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
TSC2301PAG 制造商:TI 制造商全稱:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC
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