W78LE812P-24 - 8-BIT MTP MICROCONTROLLER 

GENERAL DESCRIPTION

The W78LE812 is an 8-bit microcontroller which can accommodate a wide range of supply voltages

with low power consumption. The instruction set for the W78LE812 is fully compatible with the

standard 8051. The W78LE812 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 6-bit I/O

port P4; three 16-bit timer/counters; a hardware watchdog timer and a serial port. These peripherals

are supported by a fourteen sources two-level interrupt capability. To facilitate programming and

verification, the MTP-ROM inside the W78LE812 allows the program memory to be programmed and

read electronically. Once the code is confirmed, the user can protect the code for security.

The W78LE812 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

· Three 16-bit timer/counters

· Timer 2 Clock-out

· One full duplex serial port(UART)

· Watchdog Timer

· Direct LED drive outputs

· Fourteen 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: W78LE812-24

- PLCC 44: W78LE812P-24

 - PQFP 44: W78LE812F-24

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PAYMENTS:

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2. Western Union 

3. Bank Wire (TT)

4. MoneyGram

Shipping:

1. MJD needs about 3 BUSINESS DAY to handle the order after received payment. after receiving your payment. Otherwise, we will state it in the invoice in advance.

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REFUNDS & RETURN:

We offer a warranty on all items that we sold. Item will be tested before ship,it will be in good condition,if there are some problems with the item,feel free to contact us.Please Email us to notify a defective item. Unless otherwise specified, this item comes with 30 days warranty from the shipment date.

You must contact us before returning any product. All returns must be made within 30 days from this shipment date.Return must be in new condition(the SAME CONDITION as it was sent to you)

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