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CIRCUITOS INTEGRADOS (IC) DE I2C, I3C Y SPI
E/S de uso general (GPIO) I2C y SPI

LM8330

ACTIVO

Controlador de teclado compatible con I2C con protección GPIO, PWM e IEC61000 ESD

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LM8330

ACTIVO
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Detalles del producto

Number of I/Os 20 Features (x3) PWM, 104-input keypad scan, Reset pin Addresses 128 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -30 to 85
Number of I/Os 20 Features (x3) PWM, 104-input keypad scan, Reset pin Addresses 128 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -30 to 85
DSBGA (YFQ) 25 4.84 mm² (— mm × — mm)
  • KEY FEATURES
    • Keypad Matrices of up to of 8 x 12 Keys, Plus 8 Special Function (SF) Keys, for a Full 104 Key Support.
    • Supports General-purpose I/O Expansion on Pins Not Otherwise Used for Keypad or PWM Output.
    • Keypad Matrix and Dedicated Key Support:16-Event Keycode Buffer4-Event Multiple Key Storage Registers
    • Internal Oscillator, No External Clock Required.
    • I2C-compatible ACCESS.bus Slave Interface Standard (100 kHz) and Fast (400 kHz) Modes:7-bit and 10-bit AddressingProgrammable Slave Address(Default 7-bit 0x88, 10-bit 0x088)
    • Three Host-programmable PWM OutputsSmooth LED Brightness ModulationDedicated 31-command Script BuggerRegister-based Command Interpreter with Auto-increment Addressing
    • Key Events, Errors, and Dedicated Hardware Interrupts, Request Host Service by Asserting an IRQ Output
    • Ultra-Low-Power OperationAutomatic HALT Mode: 1.5 µA (typ.)Active Supply Current: 23 µA (typ.)Configurable Wake-Up from HALT Operation
    • IEC61000-4-2 ESD Protection on KPX[7:0] and KPY[10:0] pins
    • ESD Glitch Filter on RESETN Input
    • External Reset for System Control
  • 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)
    • −30°C to +85°C Temperature Range
    • Robust IEC ESD Protection: ±8 kV Direct Contact on KPX[7:0] and KPY[10:0] Pins
    • 25-pin DSBGA Package Size: 2 mm x 2 mm x 0.6 mm (0.4 mm Pitch)

All trademarks are the property of their respective owners.

  • KEY FEATURES
    • Keypad Matrices of up to of 8 x 12 Keys, Plus 8 Special Function (SF) Keys, for a Full 104 Key Support.
    • Supports General-purpose I/O Expansion on Pins Not Otherwise Used for Keypad or PWM Output.
    • Keypad Matrix and Dedicated Key Support:16-Event Keycode Buffer4-Event Multiple Key Storage Registers
    • Internal Oscillator, No External Clock Required.
    • I2C-compatible ACCESS.bus Slave Interface Standard (100 kHz) and Fast (400 kHz) Modes:7-bit and 10-bit AddressingProgrammable Slave Address(Default 7-bit 0x88, 10-bit 0x088)
    • Three Host-programmable PWM OutputsSmooth LED Brightness ModulationDedicated 31-command Script BuggerRegister-based Command Interpreter with Auto-increment Addressing
    • Key Events, Errors, and Dedicated Hardware Interrupts, Request Host Service by Asserting an IRQ Output
    • Ultra-Low-Power OperationAutomatic HALT Mode: 1.5 µA (typ.)Active Supply Current: 23 µA (typ.)Configurable Wake-Up from HALT Operation
    • IEC61000-4-2 ESD Protection on KPX[7:0] and KPY[10:0] pins
    • ESD Glitch Filter on RESETN Input
    • External Reset for System Control
  • 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)
    • −30°C to +85°C Temperature Range
    • Robust IEC ESD Protection: ±8 kV Direct Contact on KPX[7:0] and KPY[10:0] Pins
    • 25-pin DSBGA Package Size: 2 mm x 2 mm x 0.6 mm (0.4 mm Pitch)

All trademarks are the property of their respective owners.

The LM8330 I/O - Expander and Keypad Controller is a dedicated device designed 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 Pulse Width Modulation (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 LM8330 follows a predefined register-based set of commands. Upon startup (power-on) a configuration file must be sent from the host to set up the hardware of the device.

The LM8330 is available in a 25-bump lead-free DSBGA package size 2.0 mm x 2.0 mm x 0.6 mm (0.4 mm pitch).

The LM8330 has integrated ASIP (Application Specific Integrated Passives) on the KPX[7:0] and KPY[10:0] pins. These pins are designed to tolerate IEC61000-4-2 level 4 ESD: ±8 kV direct contact.

The LM8330 I/O - Expander and Keypad Controller is a dedicated device designed 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 Pulse Width Modulation (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 LM8330 follows a predefined register-based set of commands. Upon startup (power-on) a configuration file must be sent from the host to set up the hardware of the device.

The LM8330 is available in a 25-bump lead-free DSBGA package size 2.0 mm x 2.0 mm x 0.6 mm (0.4 mm pitch).

The LM8330 has integrated ASIP (Application Specific Integrated Passives) on the KPX[7:0] and KPY[10:0] pins. These pins are designed to tolerate IEC61000-4-2 level 4 ESD: ±8 kV direct contact.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM8330 I2C-Compatible Keypad Controller datasheet (Rev. A) 26/03/2013
Nota sobre la aplicación Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 3/07/2024
Nota sobre la aplicación Choosing the Correct I2C Device for New Designs PDF | HTML 7/09/2016
Nota sobre la aplicación Understanding the I2C Bus PDF | HTML 30/06/2015
Nota sobre la aplicación Maximum Clock Frequency of I2C Bus Using Repeaters 15/05/2015
Nota sobre la aplicación I2C Bus Pull-Up Resistor Calculation PDF | HTML 13/02/2015

Diseño y desarrollo

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GUI para el módulo de evaluación (EVM)

SNVC067 — LM8330 EVM GUI Software

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