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W78C58F-33 Datasheet

  • W78C58F-33

  • 8-Bit Microcontroller

  • 18頁(yè)

  • ETC

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W78C801
8-BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W78C801 is an 8-bit microcontroller which can accommodate a wide frequency range with low
power consumption. The instruction set for the W78C801 is fully compatible with the standard 8051.
The W78C801 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
W78C801 does not contain serial port.
The W78C801 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
鈥?/div>
Fully static design 8-bit CMOS microcontroller
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DC-40 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:
鈭?/div>
DIP 40: W78C801-24/40
鈭?/div>
PLCC 44: W78C801P-24/40
鈭?/div>
PQFP 44: W78C801F-24/40
-1-
Publication Release Date: February 1999
Revision A3

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