36-pin (NYB) package image

LM8327JGR8X/NOPB ACTIVE

Mobile I/O Companion Supporting Keyscan, I/O Expansion, PWM, and ACCESS.bus Host Interface

ACTIVE custom-reels CUSTOM Custom reel may be available

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Quality information

Rating Catalog
RoHS Yes
REACH Yes
Lead finish / Ball material SNAGCU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Additional manufacturing information

Information included:

  • Fab location
  • Assembly location
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins csBGA (NYB) | 36
Operating temperature range (°C) -40 to 85
Package qty | Carrier 3,500 | LARGE T&R

Features for the LM8327

  • Internal RC Oscillator, no External Clock Required
  • Internal PWM Clock Generation, no External Clock Required
  • Programmable I2C-compatible ACCESS.Bus Address (Default 0x8A)
  • Support for Keypad Matrices of up to of 8 x 12 Keys, Plus 8 Special Function (SF) Keys, for a Full 104 Key Support
  • Support for up to 26 Direct Connect Keys
  • 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

Features, Host-Controlled

  • 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.)

Features, Key Device

  • 1.8V ± 10% Single-Supply Operation
  • On-Chip Power-On Reset (POR)
  • ESD Glitch Filter on RESETN Pin
  • Watchdog Timer
  • Dedicated Slow Clock Input for 32 kHz up to 8MHz
  • −40°C to +85°C Temperature Range
  • 36-pin csBGA Package

All trademarks are the property of their respective owners.

Description for the LM8327

The LM8327 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 a direct key input connection, 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 LM8327 follows a predefined register based set of commands. Upon startup (power on) a configuration file must be sent from the host to setup the hardware of the device.

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Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

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