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參數(shù)資料
| 型號： | W78L33 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 131K |
| 代理商： | W78L33 |
W78L33
8-BIT MICROCONTROLLER
Publication Release Date: September 1998
- 1 -
Revision A1
GENERAL DESCRIPTION
The W78L33 microcontroller supplies a wider frequency range and supply voltages than most 8-bit
microcontrollers on the market. It is functional compatible with the industry standard 80C32
microcontroller series except the one extra 4-bit bit-addressable I/O port (Port 4). The W78L33
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 W78L33 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 8-bit CMOS microcontroller
Supply voltage of 1.8V to 5.5V
DC-24 MHz operation
256 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
Three 16-bit timer/counters
One full duplex serial port
Boolean processor
Six-
sources, two-level interrupt capability
Built-in power management
One extra 4-bit bit-addressable I/O port
Packages:
PLCC 44: W78L33P-24
QFP 44: W78L33F-24
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