1. ispMACH 4000 Family CPLDs Lattice Semiconductor Confidential Page: 1 Application Processors Limit Function Expansion Bluetooth MCU / Application / Baseband Processor Additional Functions FM Peripheral Control GPS WiFi LEDs IO Constrained Processor Other I2C, SPI, parallel, etc Inexpensive application processors (APs) and MCUs have limited IO ASIC IOs are an expensive and risky option to expand Additional peripheral functions are a common feature upgrade

2. ispMACH 4000 Family CPLDs Lattice Semiconductor Confidential Page: 2 Lattice PLD for Flexible LED Drive Interfacing Lattice PLD Constant Current LED Drive IC Backlight / Contrast Control ASIC or ASSP Serial Bus Driver Voltage Level Shift Peripheral Interface GPIO Expansion Slave Interface Lattice PLD is the host for popular on-board interfaces (I2C, SPI, local bus, proprietary, etc) Best IO density for price Integrates voltage level shifting and glue logic I2C,SPI or Proprietary Interface Serial Interface

3. ispMACH 4000 Family CPLDs Lattice Semiconductor Confidential Page: 3 Proposed LED driver eval board with Lattice PLD Lattice PLD TLC59401 LED Drive IC Serial Bus Driver On board Oscillator for default timing GPIO Expansion I2C, SPI or other i/f Lattice PLD is the host for popular interfaces (I2C, SPI, local bus, proprietary, etc) Customer could program PLD with their own interface to test LED driver and/or Lattice could supply example program files for I2C & SPI and typical 59401 i/f This board allows a customer to implement many LED interfaces for TLC59401 or other Could be one or several connectors / headers Serial Interface Could daisy chain to another board or have more LED drivers