W78L32
8-BIT MICROCONTROLLER
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
-1-
Publication Release Date: September 1998
Revision A1
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