|
W78L801 Datasheet, PDF (1/20 Pages) Winbond – 8-BIT MICROCONTROLLER | |||
|
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:
â DIP 40: W78L801-24
â PLCC 44: W78L801P-24
â PQFP 44: W78L801F-24
Publication Release Date: February 1999
-1-
Revision A3
|
▷ |