DESCRIPTION

The µPD78322 is a 16-/8-bit single-chip microcontroller that incorporates a high-performance 16-bit CPU. The µPD78322 is one of 78K/III series.

A realtime pulse unit for realtime pulse control required in motor control, an A/D converter, a ROM, and a RAM have been integrated into one chip.

The µPD78322 incorporates 16K-byte mask ROM and 640-byte RAM.

The µPD78320 is provided as a ROM-less product of the µPD78322. Also, the µPD78P322 is provided as an on-chip PROM product.

FEATURES

• Internal 16-bit architecture and external 8-bit data bus

• High-speed processing by pipeline control and instruction prefetch

• Minimum instruction execution time: 250 ns (with 16 MHz external clock in operation)

• Instruction set suitable for control operations (µPD78312 upward compatible)

• Multiplication/division instruction (16 bits × 16 bits, 32 bits ÷ 16 bits)

• Bit manipulation instruction

• String instruction, etc.

• On-chip high-function interrupt controller

• 3-level priority specifiable

• 3-type interrupt servicing mode selectable

(Vectored interrupt function, context switching function, and macro service function)

• Variety of peripheral hardware

• Realtime pulse unit

• 8-channel, 10-bit A/D converter

• Watchdog timer

• Powerful serial interface (with an on-chip dedicated baud rate generator)

• UART ····· 1 channel

• SBI (NEC Standard Serial Bus Interface)

• 3-wire serial I/O ····· 1 channel

APPLICATIONS

• Motor control devices