Introduction
The PSD4000 series of Programmable Microcontroller (MCU) Peripherals brings In-System-Programmability (ISP) to Flash memory and programmable logic. The result is a simple and flexible solution for embedded designs. PSD4000 devices combine many of the peripheral functions found in MCU based applications:
   • 4 Mbit of Flash memory
   • A secondary Flash memory for boot or data
   • Over 3,000 gates of Flash programmable logic
   • 64 Kbit SRAM
   • Reconfigurable I/O ports
   • Programmable power management.

FEATURES SUMMARY
■ 5 V±10% Single Supply Voltage:
■ Up to 4 Mbit of Primary Flash Memory (8 uniform sectors)
■ 256Kbit Secondary Flash Memory (4 uniform sectors)
■ Up to 64 Kbit SRAM
■ Over 3,000 Gates of PLD: DPLD and CPLD
■ 52 Reconfigurable I/O ports
■ Enhanced JTAG Serial Port
■ Programmable power management
■ High Endurance:
   – 100,000 Erase/Write Cycles of Flash Memory
   – 1,000 Erase/Write Cycles of PLD