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

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