mg82fel308 Megawin Technology, mg82fel308 Datasheet - Page 5

• Manufacturer Part Number: mg82fel308
• Description: A Single-chip Microcontroller Based On A High Performance 1-t Architecture 80c51
• Manufacturer: Megawin Technology

MG82FE(L)308/316
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1. General Description
The MG82FE(L)308/316 is a single-chip microcontroller based on a high performance 1-T architecture 80C51
CPU that executes instructions in 1~7 clock cycles (about 6~7 times the rate of a standard 8051 device), and has
an 8051 compatible instruction set. Therefore at the same performance as the standard 8051, the MG82FE(L)
308/316 can operate at a much lower speed and thereby greatly reduce the power consumption.
The MG82FE(L)308/316 has 16K bytes of embedded Flash memory for code and data. The Flash memory can
be programmed either in writer mode or in ISP (In-System Programming) mode. And, it also provides the
In-Application Programming (IAP) capability. ISP allows the user to download new code without removing the
microcontroller from the actual end product; IAP means that the device can write non-volatile data in the Flash
memory while the application program is running. There needs no external high voltage for programming due to
its built-in charge-pumping circuitry.
The MG82FE(L)308/316 retains all features of the standard 80C52 with 256 bytes of scratch-pad RAM, four 8bit
I/O ports, two external interrupts, a multi-source 4-level interrupt controller and three timer/counters. In addition,
the MG82FE(L)308/316 has four extra I/O ports (P4[6:0], P5, P6[1:0], P7), an XRAM of 256 bytes, four extra
external interrupts with High/Low trigger option, a PWM Timer, a one-time enabled Watchdog Timer, a precision
analog comparator with multi-channel inputs and on-chip VDD reference, a Brown-out Detector, an on-chip
crystal oscillator(shared with P6.0 and P6.1), a high precision internal oscillator, a more versatile serial channel
that facilitates multiprocessor communication (EUART) and a speed improvement mechanism (extra X2/X4
mode).
The MG82FE(L)308/316 has two power-saving modes and an 8-bit system clock pre-scaler to reduce the power
consumption. In the Idle mode the CPU is frozen while the peripherals and the interrupt system are still operating.
In the Power-Down mode the RAM and SFRs’ value are saved and all other functions are inoperative; most
importantly, in the Power-down mode the device can be waked up by the external interrupts. And, the user can
further reduce the power consumption by using the 8-bit system clock pre-scaler to slow down the operating
speed.
This document information is the intellectual property of Megawin Technology.
© Megawin Technology Co., Ltd. 2009 All rights reserved.
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