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W78L801

Winbond
Part Number W78L801
Manufacturer Winbond
Description 8-BIT MICROCONTROLLER
Published Apr 17, 2005
Detailed Description W78L801 8-BIT MICROCONTROLLER GENERAL DESCRIPTION The W78L801 is an 8-bit microcontroller which can accommodate a wide r...
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W78L801
W78L801

Overview
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 • Fully static design 8-bit CMOS microcontroller • Wide supply voltage of 1.
8V to 5.
5V • DC-24 MHz operation • 256 bytes of on-chip scratchpad RAM • 4 KB Mask-ROM • 64 KB program memory address space • 64 KB data memory address space • Four 8-bit bi-directional ports • Two 16-bit timer/counters • Watchdog Timer • Direct LED drive outputs • Twelve sources, two-level interrupt capability • Wake-up via external interrupts at Port 1 • EMI reduction mode • Built-in power management • Code protection mechanism • Packages: − DIP 40: W78L801-24 − PLCC 44: W78L801P-24 − PQFP 44: W78L801F-24 -1- Publication Release Date: February 1999 Revision A3 W78L801 PIN CONFIGURATIONS 40-Pin DIP (W78L801) INT2, P1.
0 INT3, P1.
1 INT4,P1.
2 INT5,P1.
3 INT6,P1.
4 INT7,P1.
5 INT8,P1.
6 INT9,P1.
7 RST P3.
0 P3.
1 INT0, P3.
2 INT1, P3.
3 T0, P3.
4 T1, P3.
5 WR, P3.
6 RD, P3.
7 XTAL2 XTAL1 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VDD P0.
0, AD0 P0.
1, AD1 P0.
2, AD2 ...


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