TCA8418E

Name: TCA8418E
Brand: TI
SKU: TCA8418E
Price: 0.764 USD

現行

具中斷和 80 鍵支援的 18 位元 1.65 至 3.6-V 1MHz I2C/SMBus 鍵盤掃描儀

立即訂購

產品規格表

document-pdfAcrobat TCA8418E I2C Controlled Keypad Scan IC With Integrated ESD Protection datasheet (Rev. C) (英文) PDF | HTML

TCA8418E

現行

產品規格表

立即訂購

產品詳細資料

Number of I/Os

18

Features

1-MHz maximum frequency, 80-input keypad scan, Debounce filter

Supply voltage (min) (V)

1.65

Supply voltage (max) (V)

3.6

Addresses

1

Rating

Catalog

Frequency (max) (MHz)

1

Operating temperature range (°C)

-40 to 85

Number of I/Os

18

Features

1-MHz maximum frequency, 80-input keypad scan, Debounce filter

Supply voltage (min) (V)

1.65

Supply voltage (max) (V)

3.6

Addresses

1

Rating

Catalog

Frequency (max) (MHz)

1

Operating temperature range (°C)

-40 to 85

DSBGA (YFP)

25

6.75999999999999792000000000000016 mm² 2.5999999999999996 x 2.5999999999999996

Operating Power-Supply Voltage Range of 1.65-V
to 3.6-V
±15-kV Human Body Model High Voltage ESD
(GPIO lines)
Supports 80 Buttons With Use of 18 GPIOs
Supports QWERTY Keypad Operation Plus GPIO
Expansion
Low Standby (Idle) Current Consumption: 3 µA
Supports 1-MHz Fast Mode Plus I²C Bus
10-Byte FIFO to Store 10 Key Presses and
Releases
Open-Drain Active-Low Interrupt Output
Integrated Debounce Time of 50 µs
Schmitt-Trigger Action Allows Slow Input
Transition and Better Switching Noise Immunity at
the SCL and SDA Inputs: Typical V_hys at 1.8 V is
0.18 V
Latch-Up Performance Exceeds 200 mA Per
JESD 78, Class II
Very Small Package
- WCSP (YFP): 2 mm × 2 mm; 0.4 mm pitch
APPLICATIONS
- Smart Phones
- Tablets
- HMI Panels
- GPS Devices
- MP3 Players
- Digital Cameras

All other trademarks are the property of their respective owners

Operating Power-Supply Voltage Range of 1.65-V
to 3.6-V
±15-kV Human Body Model High Voltage ESD
(GPIO lines)
Supports 80 Buttons With Use of 18 GPIOs
Supports QWERTY Keypad Operation Plus GPIO
Expansion
Low Standby (Idle) Current Consumption: 3 µA
Supports 1-MHz Fast Mode Plus I²C Bus
10-Byte FIFO to Store 10 Key Presses and
Releases
Open-Drain Active-Low Interrupt Output
Integrated Debounce Time of 50 µs
Schmitt-Trigger Action Allows Slow Input
Transition and Better Switching Noise Immunity at
the SCL and SDA Inputs: Typical V_hys at 1.8 V is
0.18 V
Latch-Up Performance Exceeds 200 mA Per
JESD 78, Class II
Very Small Package
- WCSP (YFP): 2 mm × 2 mm; 0.4 mm pitch
APPLICATIONS
- Smart Phones
- Tablets
- HMI Panels
- GPS Devices
- MP3 Players
- Digital Cameras

All other trademarks are the property of their respective owners

The TCA8418E is a keypad scan device with integrated ESD protection. It can operate from 1.65 V to 3.6 V and has 18 general purpose inputs/outputs (GPIO) that can be used to support up to 80 keys via the I²C interface.

The TCA8418E saves power and bandwidths since it handles the keypad scanning algorithms. The TCA8418E is also ideal for usage with processors that have limited GPIOs.

The key controller debounces inputs and maintains a 10 byte FIFO of key-press and release events which can store up to 10 keys with overflow wrap capability. An interrupt (INT) output can be configured to alert key presses and releases either as they occur, or at maximum rate. A CAD_INT pin is included to indicate the detection of CTRL-ALT-DEL (essentially, 1, 11, 21) key press action.

The TCA8418E is a keypad scan device with integrated ESD protection. It can operate from 1.65 V to 3.6 V and has 18 general purpose inputs/outputs (GPIO) that can be used to support up to 80 keys via the I²C interface.

The TCA8418E saves power and bandwidths since it handles the keypad scanning algorithms. The TCA8418E is also ideal for usage with processors that have limited GPIOs.

The key controller debounces inputs and maintains a 10 byte FIFO of key-press and release events which can store up to 10 keys with overflow wrap capability. An interrupt (INT) output can be configured to alert key presses and releases either as they occur, or at maximum rate. A CAD_INT pin is included to indicate the detection of CTRL-ALT-DEL (essentially, 1, 11, 21) key press action.

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具中斷、重設和配置暫存器的 18 位元 1.65 至 3.6-V I2C/SMBus I/O 擴展器 No keyboard scanning

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	類型	標題		日期
*	Data sheet	TCA8418E I2C Controlled Keypad Scan IC With Integrated ESD Protection datasheet (Rev. C)	PDF \| HTML	2015年 10月 28日
	Application note	Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A)	PDF \| HTML	2024年 7月 3日
	Selection guide	I2C Infographic Flyer		2015年 12月 3日
	Application note	Understanding the I2C Bus	PDF \| HTML	2015年 6月 30日
	Application note	Maximum Clock Frequency of I2C Bus Using Repeaters		2015年 5月 15日
	Application note	I2C Bus Pull-Up Resistor Calculation	PDF \| HTML	2015年 2月 13日

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TCA8418E-EVM — 具有整合式 ESD 防護的 TCA8418E-EVM I2C 控制鍵盤掃描 IC 評估模組

The TCA8418E-EVM is an evaluation board designed to demonstrate the key scanning functionality of the TCA8418E keypad scan IC. The EVM comes with 9 buttons configured in a row/column matrix for easy testing. In addition, the 10x2 receptacle allows the customer to expand the functionality of the (...)

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TCA8418E

具中斷和 80 鍵支援的 18 位元 1.65 至 3.6-V 1MHz I2C/SMBus 鍵盤掃描儀

TCA8418E

產品詳細資料

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功能相同，但引腳輸出與所比較的裝置不同

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設計與開發

TCA8418E-EVM — 具有整合式 ESD 防護的 TCA8418E-EVM I2C 控制鍵盤掃描 IC 評估模組

SLVC601 — TCA8418E-EVM Firmware and GUI

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產品

I2C 與 SPI 通用 I/O (GPIO)

硬體開發

開發板

I2C-DESIGNER — I2C 設計工具

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