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W78LE52 Datasheet(PDF) 1 Page - Winbond

Part # W78LE52
Description  8-BIT MTP MICROCONTROLLER
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W78LE52 Datasheet(HTML) 1 Page - Winbond

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Preliminary W78LE52
8-BIT MTP MICROCONTROLLER
Publication Release Date: January 1999
- 1 -
Revision A1
GENERAL DESCRIPTION
The W78LE52 is an 8-bit microcontroller which can accommodate a wider frequency range with low
power consumption. The instruction set for the W78LE52 is fully compatible with the standard 8051.
The W78LE52 contains an 8K bytes MTP ROM (Multiple-Time Programmable ROM); a 256 bytes
RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit I/O port P4; three 16-
bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by
eight sources two-level interrupt capability. To facilitate programming and verification, the MTP-ROM
inside the W78LE52 allows the program memory to be programmed and read electronically. Once the
code is confirmed, the user can protect the code for security.
The W78LE52 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 2.4V to 5.5V
256 bytes of on-chip scratchpad RAM
8 KB electrically erasable/programmable MTP-ROM
64 KB program memory address space
64 KB data memory address space
Four 8-bit bi-directional ports
One extra 4-bit bit-addressable I/O port, additional INT2 / INT3
(available on 44-pin PLCC/QFP package)
Three 16-bit timer/counters
One full duplex serial port(UART)
• Watchdog Timer
Eight sources, two-level interrupt capability
• EMI reduction mode
Built-in power management
Code protection mechanism
Packages:
− DIP 40: W78LE52-24
− PLCC 44: W78LE52P-24
− PQFP 44: W78LE52F-24


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