W78C31BP-40 Winbond, W78C31BP-40 Datasheet
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W78C31BP-40
Manufacturer Part Number
W78C31BP-40
Description
Manufacturer
Winbond
Datasheet
1.W78C31BP-16.pdf
(16 pages)
Specifications of W78C31BP-40
Case
PLCC/44
Date_code
04+
GENERAL DESCRIPTION
The W78C31B microcontroller supplies a wider frequency range than most 8-bit microcontrollers on
the market. It is compatible with the industry standard 80C31 microcontroller series.
The W78C31B contains four 8-bit bidirectional parallel ports, two 16-bit timer/counters, and a serial
port. These peripherals are supported by a five-source, two-level interrupt capability. There are 128
bytes of RAM, and the device supports ROMless operation for application programs.
The W78C31B 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
8-bit CMOS microcontroller
Fully static design
Low standby current at full supply voltage
DC-40 MHz operation
128 bytes of on-chip scratchpad RAM
ROMless operation
64K bytes program memory address space
64K bytes data memory address space
Four 8-bit bidirectional ports
Two 16-bit timer/counters
One full duplex serial port
Boolean processor
Five
Built-in power management
Packages:
DIP 40: W78C31B-16/24/40
PLCC 44: W78C31BP-16/24/40
QFP 44: W78C31BF-16/24/40
TQFP 44: W78C31BM-16/24/40
-source, two-level interrupt capability
8-BIT MICROCONTROLLER
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Publication Release Date: October 1997
W78C31B
Revision A3