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I2C 汎用 I/O (GPIO)

LM8328

アクティブ

キースキャンと I/O 拡張と PWM と Access.bus ホスト・インターフェイスをサポートする、モバイル I/O コンパニオン

ご注文はこちら
データシート

LM8328

アクティブ
データシート ご注文はこちら

製品詳細

Supply voltage (min) (V) 1.62 Supply voltage (max) (V) 1.98 Rating Catalog Operating temperature range (°C) -40 to 85
Supply voltage (min) (V) 1.62 Supply voltage (max) (V) 1.98 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFQ) 25 4.84 mm² 2.2 x 2.2
  • KEY FEATURES
    • Internal RC Oscillator, No External Clock Required
    • Internal PWM Clock Generation, No External Clock Required
    • External Reset for System Control
    • Programmable I2C-compatible ACCESS.bus Address (Default 0x88)
    • Support for Keypad Matrices of up to of 8 x 12 Keys, Plus 8 Special Function (SF) Keys, for a Full 104 Key Support
    • I2C-compatible ACCESS.bus Slave Interface at 100 kHz (Standard-Mode) and 400 kHz (Fast-Mode)
    • Three Host-programmable PWM Outputs for Smooth LED Brightness Modulation
    • Supports General-purpose I/O Expansion on Pins Not Otherwise Used for Keypad or PWM Output
    • 15 byte Key Event Buffer
    • Multiple Key Event Storage
    • Key Events, Errors, and Dedicated Hardware Interrupts Request Host Service by Asserting an IRQ Output
    • Automatic HALT Mode for Low Power Operation
    • Wake-up from HALT Mode on Any Interface (Rising Edge, Falling Edge or Pulse)
    • Three PWM Outputs with Dedicated Script Buffer for up to 32 Commands
    • Register-based Command Interpreter with Auto Increment Address
  • HOST-CONTROLLED FEATURES
    • Reset Input for System Control
    • PWM Scripting for Three PWM Outputs
    • Period of Inactivity that Triggers Entry into HALT Mode
    • Debounce Time for Reliable Key Event Polling
    • Configuration of General Purpose I/O Ports
    • Various Initialization Options (Keypad Size, etc.)
  • KEY DEVICE FEATURES
    • 1.8V ± 10% Single-supply Operation
    • On-chip Power-on Reset (POR)
    • Watchdog Timer
    • −40°C to +85°C Temperature Range
    • 25-pin DSBGA Package

All trademarks are the property of their respective owners.

  • KEY FEATURES
    • Internal RC Oscillator, No External Clock Required
    • Internal PWM Clock Generation, No External Clock Required
    • External Reset for System Control
    • Programmable I2C-compatible ACCESS.bus Address (Default 0x88)
    • Support for Keypad Matrices of up to of 8 x 12 Keys, Plus 8 Special Function (SF) Keys, for a Full 104 Key Support
    • I2C-compatible ACCESS.bus Slave Interface at 100 kHz (Standard-Mode) and 400 kHz (Fast-Mode)
    • Three Host-programmable PWM Outputs for Smooth LED Brightness Modulation
    • Supports General-purpose I/O Expansion on Pins Not Otherwise Used for Keypad or PWM Output
    • 15 byte Key Event Buffer
    • Multiple Key Event Storage
    • Key Events, Errors, and Dedicated Hardware Interrupts Request Host Service by Asserting an IRQ Output
    • Automatic HALT Mode for Low Power Operation
    • Wake-up from HALT Mode on Any Interface (Rising Edge, Falling Edge or Pulse)
    • Three PWM Outputs with Dedicated Script Buffer for up to 32 Commands
    • Register-based Command Interpreter with Auto Increment Address
  • HOST-CONTROLLED FEATURES
    • Reset Input for System Control
    • PWM Scripting for Three PWM Outputs
    • Period of Inactivity that Triggers Entry into HALT Mode
    • Debounce Time for Reliable Key Event Polling
    • Configuration of General Purpose I/O Ports
    • Various Initialization Options (Keypad Size, etc.)
  • KEY DEVICE FEATURES
    • 1.8V ± 10% Single-supply Operation
    • On-chip Power-on Reset (POR)
    • Watchdog Timer
    • −40°C to +85°C Temperature Range
    • 25-pin DSBGA Package

All trademarks are the property of their respective owners.

The LM8328 GenI/O - Expander and Keypad Controller is a dedicated device to unburden a host processor from scanning a matrix-addressed keypad and to provide flexible and general purpose, host programmable input/output functions. Three independent PWM timer outputs are provided for dynamic LED brightness modulation.

It communicates with a host processor through an I2C-compatible ACCESS.bus serial interface. It can communicate in Standard (100 kHz) - and Fast-Mode (400 kHz) in slave Mode only.

All available input/output pins can alternately be used as an input or an output in a keypad matrix or as a host programmable general purpose input or output.

Any pin programmed as an input can also sense hardware interrupts. The interrupt polarity (“high to low” or “low to high” transition) is thereby programmable.

The LM8328 follows a predefined register based set of commands. Upon start-up (power - on) a configuration file must be sent from the host to setup the hardware of the device.

The LM8328 GenI/O - Expander and Keypad Controller is a dedicated device to unburden a host processor from scanning a matrix-addressed keypad and to provide flexible and general purpose, host programmable input/output functions. Three independent PWM timer outputs are provided for dynamic LED brightness modulation.

It communicates with a host processor through an I2C-compatible ACCESS.bus serial interface. It can communicate in Standard (100 kHz) - and Fast-Mode (400 kHz) in slave Mode only.

All available input/output pins can alternately be used as an input or an output in a keypad matrix or as a host programmable general purpose input or output.

Any pin programmed as an input can also sense hardware interrupts. The interrupt polarity (“high to low” or “low to high” transition) is thereby programmable.

The LM8328 follows a predefined register based set of commands. Upon start-up (power - on) a configuration file must be sent from the host to setup the hardware of the device.
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種類 タイトル 最新の英語版をダウンロード 日付
* データシート LM8328 Mobile I/O Companion Supporting Keyscan, I/O Expansion, PWM, & ACCESS.bus データシート (Rev. A) 2013年 3月 26日

購入と品質

記載されている情報：
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報：
  • ファブの拠点
  • 組み立てを実施した拠点

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