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W78L801F-24 Datasheet

  • W78L801F-24

  • 8-BIT MICROCONTROLLER

  • 20頁(yè)

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W78L801
8-BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W78L801 is an 8-bit microcontroller which can accommodate a wide range of supply voltages
with low power consumption. The instruction set for the W78L801 is fully compatible with the standard
8051. The W78L801 contains an 4K bytes Mask ROM; a 256 bytes RAM; four 8-bit bi-directional and
bit-addressable I/O ports; an additional 6-bit I/O port P4; two 16-bit timer/counters; a hardware
watchdog timer. These peripherals are supported by a twelve sources two-level interrupt capability.
The W78L801 does not contain serial port.
The W78L801 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
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Fully static design 8-bit CMOS microcontroller
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Wide supply voltage of 1.8V to 5.5V
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DC-24 MHz operation
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256 bytes of on-chip scratchpad RAM
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4 KB Mask-ROM
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64 KB program memory address space
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64 KB data memory address space
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Four 8-bit bi-directional ports
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Two 16-bit timer/counters
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Watchdog Timer
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Direct LED drive outputs
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Twelve sources, two-level interrupt capability
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Wake-up via external interrupts at Port 1
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EMI reduction mode
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Built-in power management
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Code protection mechanism
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Packages:
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DIP 40: W78L801-24
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PLCC 44: W78L801P-24
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PQFP 44: W78L801F-24
-1-
Publication Release Date: February 1999
Revision A3

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