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PDF MG82FG5C64 Data sheet ( Hoja de datos )
| Número de pieza | MG82FG5C64 | |
| Descripción | 8051-Based MCU | |
| Fabricantes | Megawin | |
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8051-Based MCU
MG82FG5Cxx
Data Sheet
Version: 0.24
This document contains information on a new product under development by Megawin. Megawin reserves the right to change or
discontinue this product without notice.
Megawin Technology Co., Ltd. 2005 All rights reserved.
2015/08 version 0.24
1 page  
━ External clock input (ECKI) on P6.0/XTAL2, up to 25MHz
━ Internal RC Oscillator output on P6.0/XTAL2
━ On-chip Clock Multiplier (CKM) to provide high speed clock source
Two Brown-Out Detectors
━ BOD0: detect 1.7V
━ BOD1: selected detection level on 4.2V/3.7V/2.4V/2.0V
━ Interrupt CPU or reset CPU
━ Wake up CPU in Power-Down mode (BOD1)
Multiple power control modes: idle mode, power-down mode, slow mode, sub-clock mode, RTC mode,
watch mode and monitor mode.
━ All interrupts can wake up IDLE mode
━ 13 sources to wake up Power-Down mode
━ Slow mode and sub-clock mode support low speed MCU operation
━ RTC mode supports RTC to resume CPU in power down
━ Watch mode supports WDT to resume CPU in power down
━ Monitor mode supports BOD1 to resume CPU in power down
Operating voltage range: 1.8V – 5.5V
━ Minimum 1.8V requirement in flash write operation (ISP/IAP/ICP)
Operation frequency range: 25MHz(max)
━ External crystal mode, 0 – 12MHz @ 2.0V – 5.5V, 0 – 25MHz @ 2.7V – 5.5V
━ CPU up to 12MHz @ 1.8V – 5.5V, and up to 25MHz @ 2.2V – 5.5V
Operating Temperature:
━ Industrial (-40°C to +85°C)*
Package Types:
━ LQFP64 (7mm x 7mm): MG82FG5C64AD64
━ LQFP48 (7mm x 7mm): MG82FG5C32AD48
*: Tested by sampling.
MEGAWIN
MG82FG5Cxx Data Sheet
5
5 Page 
1. General Description
The MG82FG5C64 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 MG82FG5C64
can operate at a much lower speed and thereby greatly reduce the power consumption.
The MG82FG5C64 has 64K bytes of embedded Flash memory for code and data. The Flash memory can be
programmed either in serial writer mode (via ICP, In-Circuit Programming) or in In-System Programming mode.
And, it also provides the In-Application Programming (IAP) capability. ICP and ISP allow 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 MG82FG5C64 retains all features of the standard 80C52 with 256 bytes of scratch-pad RAM, four 8-bit I/O
ports, two external interrupts, a multi-source 4-level interrupt controller, a serial port (UART0) and three
timer/counters. In addition, the MG82FG5C64 has 27 extra I/O port pins (P4.0~P4.7, P5.0~P5.7, P6.0~P6.7 and
P7.0~P7.2), one XRAM of 3840 bytes, two extra external interrupts with High/low trigger option, 1MHz 10-bit
ADC, three analog comparators, two 16-bit timer/counters (Timer3 and Timer4), two 6-channel PCAs (PCA0
and PCA1, PCA with dead-time controlled PWM), one 8/16-bit SPI/QPI, three TWSIs (TWSI, TWI1 and STWI),
secondary serial port (UART1) to support LIN and SMC, 3rd and 4th serial port (UART2 and UART3) to support
SCI, keypad interrupt, Watchdog Timer, Real-Time-Clock module, two Brown-out Detectors, an on-chip crystal
oscillator(shared with P6.0 and P6.1), an internal high precision oscillator (IHRCO), an on-chip clock multiplier
(CKM) to generate high speed clock source, an internal low speed RC oscillator (ILRCO) and an enhanced serial
function in UART0 that facilitates multiprocessor communication and a speed improvement mechanism (X2/X4
mode).
The MG82FG5C64 has multiple operating modes to reduce the power consumption: idle mode, power down
mode, slow mode, sub-clock mode, RTC mode, watch mode and monitor mode. 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 many interrupt or reset sources. In slow mode, the user can further reduce the power
consumption by using the 8-bit system clock pre-scaler to slow down the operating speed. Or select sub-clock
mode which clock source is derived from internal low speed oscillator (ILRCO) for CPU to perform an ultra low
speed operation. The RTC module supports Real-Time-Clock function in all operating modes. In watch mode, it
keeps WDT running in power-down or idle mode and resumes CPU as an auto-wakeup timer when WDT
overflows. Monitor mode provides the Brown-Out detection in power down mode and resumes CPU when chip
VDD reaches the specific detection level.
Additionally, the MG82FG5C64 is equipped with the Megawin proprietary On-Chip Debug (OCD) interface for In-
Circuit Emulator (ICE). The OCD interface provides on-chip and in-system non-intrusive debugging without any
target resource occupied. Several operations necessary for an ICE are supported such as Reset, Run, Stop,
Step, Run to Cursor and Breakpoint Setting. The user has no need to prepare any development board during
firmware developing or the socket adapter used in the traditional ICE probe head. All the thing the user needs to
do is to prepare a connector for the dedicated OCD interface. This powerful feature makes the developing very
easy for any user.
MEGAWIN
MG82FG5Cxx Data Sheet
1
1
11 Page | ||
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