參數(shù)資料
型號(hào)： ADUC831BS
廠商： ANALOG DEVICES INC
元件分類： 微控制器/微處理器
英文描述： MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU
中文描述： 8-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP52
封裝： PLASTIC, MQFP-52
文件頁(yè)數(shù)： 28/76頁(yè)
文件大小： 1211K
代理商： ADUC831BS
REV. 0
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ADuC831
Using the Flash/EE Program Memory
The 62 kByte Flash/EE program memory array is mapped into the
lower 62 kBytes of the 64 kBytes program space addressable by
the ADuC831, and is used to hold user code in typical applications.
The program memory Flash/EE memory arrays can be programmed
in three ways:
(1) Serial Downloading (In-Circuit Programming)
The ADuC831 facilitates code download via the standard
UART serial port. The ADuC831 will enter serial download
mode after a reset or power cycle if the
PSEN
pin is pulled low
through an external 1 k resistor. Once in serial download
mode, the user can download code to the full 62 kBytes of
Flash/EE program memory while the device is in circuit in its
target application hardware.
A PC serial download executable is provided as part of the ADuC831
QuickStart development system. The Serial Download protocol
is detailed in a MicroConverter Applications Note uC004.
(2) Parallel Programming
The parallel programming mode is fully compatible with con-
ventional third party Flash or EEPROM device programmers.
In this mode Ports P0, P1, and P2 operate as the external data
and address bus interface, ALE operates as the Write Enable
strobe, and Port P3 is used as a general configuration port that
configures the device for various program and erase operations
during parallel programming. The high voltage (12 V) supply
required for Flash programming is generated using on-chip charge
pumps to supply the high voltage program lines.
www.analog.com/microconverter
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