DESCRIPTION
The P90CL301BFH is a highly integrated low-voltage 16/32-bit microcontroller especially suitable for digital mobile systems such as GSM, DCS1900, IS54/95 and other applications requiring low voltage, low power consumption and high computing power. It is fully software compatible with the 68000.

FEATURES
• Fully 68000 software compatible
• Static design with 32-bit internal structure
• Power saving modes: Power-down, Standby and Idle mode
• External clock input: 27 MHz at 2.7 V
• Single supply voltage of 2.7 to 3.6 V; down to 1.8 V for RAM retention
• 68000 compatible bus interface
• Intel 8051 compatible bus interface
• 16 Mbytes program/data address range
• 8 programmable chip-selects
• Dynamic bus sizing, 16 or 8-bit memory bus port size
• 56 powerful instruction types:
    – 5 basic data types, and
    – 14 addressing modes
• 7 programmable interrupt inputs:
    – a Non-Maskable Interrupt input (NMIN)
    – 14 auto-vectored interrupts and 7 interrupt priority levels
• 24 port pins (multiplexed with other functions)
• 2 UART serial interfaces; an independent baud rate generator with two programmable outputs (UART0 and UART1)
• UART queue with maximum 256 bytes
• I2C-bus serial interface 100 kbaud
• 2 timer arrays including:
    – two 16-bit reference counters and 8-bit programmable prescalers
    – six 16-bit match/capture registers with equality comparators
• Watchdog Timer with 21-bit resolution
• Two 8-bit Pulse Width Modulation (PWM) outputs with 8-bit prescaler
• Four 8-bit Analog-to-Digital Converter (ADC) inputs with Power-down mode
• 512 bytes RAM on-chip
• On-Circuit Emulation (ONCE) mode and internal Test-ROM (256 bytes) for on-board testing
• 80-pin LQFP package
• Temperature range −40 to +85 °C
• 0.5 micron CMOS low voltage technology.