GENERAL DESCRIPTION

The W78L32 microcontroller supplies a wider frequency range and supply voltages than most 8-bit microcontrollers on the market. It is compatible with the industry standard 80C32 microcontroller series.

The W78L32 contains four 8-bit bidirectional parallel ports, three 16-bit timer/counters and a serial port. These peripherals are supported by a six-source, two-level interrupt capability. There are 256 bytes of RAM, and the device supports ROMless operation for application programs.

The W78L32 microcontroller has two power reduction modes, idle mode and power-down mode, both of which are software selectable. The idle mode turns off the processor clock but allows for continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power consumption. The external clock can be stopped at any time and in any state without affecting the processor.

FEATURES

• Fully static design

• Supply voltage of 1.8V to 5.5V

• Low power consumption at full supply voltage

• DC-24 MHz operation

• 256 bytes of on-chip scratchpad RAM

• 64K bytes program memory address space

• 64K bytes data memory address space

• Four 8-bit bidirectional ports

• Three 16-bit timer/counters

• One full duplex serial port

• Boolean processor

• Six-source, two-level interrupt capability

• Built-in power management

• Packages:

   − DIP 40: W78L32-24

   − PLCC 44: W78L32P-24

   − QFP 44: W78L32F-24

   − Lead Free (RoHS) DIP 40: W78L032A24DL, W78M032A24DL

   − Lead Free (RoHS) PLCC 44: W78L032A24PL, W78M032A24PL

   − Lead Free (RoHS) PQFP 44: W78L032A24FL, W78M032A24FL