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型號(hào)：	MQ83C154XXX-16P883R
廠商：	ATMEL CORP
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44
封裝：	CERAMIC, QFP-44
文件頁(yè)數(shù)：	196/839頁(yè)
文件大?。?/td>	61013K
代理商：	MQ83C154XXX-16P883R

ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]

8285E–AVR–02/2013

After data is loaded to the page buffer, program the EEPROM page, see Figure 27-12.

Figure 27-12. Serial Programming instruction example.

SPI Serial Programming Characteristics

Programming via the JTAG Interface

Programming through the JTAG interface requires control of the four JTAG specific pins: TCK, TMS, TDI, and

TDO. Control of the reset and clock pins is not required.

To be able to use the JTAG interface, the JTAGEN Fuse must be programmed. The device is default shipped with

the fuse programmed. In addition, the JTD bit in MCUCSR must be cleared. Alternatively, if the JTD bit is set, the

external reset can be forced low. Then, the JTD bit will be cleared after two chip clocks, and the JTAG pins are

available for programming. This provides a means of using the JTAG pins as normal port pins in Running mode

while still allowing In-System Programming via the JTAG interface. Note that this technique can not be used when

using the JTAG pins for Boundary-scan or On-chip Debug. In these cases the JTAG pins must be dedicated for

this purpose.

During programming the clock frequency of the TCK Input must be less than the maximum frequency of the chip.

The System Clock Prescaler can not be used to divide the TCK Clock Input into a sufficiently low frequency.

As a definition in this datasheet, the LSB is shifted in and out first of all Shift Registers.

Serial Programming Instruction

Program Memory/

EEPROM Memory

Write Program Memory Page/

Write EEPROM Memory Page

Load Program Memory Page (High/Low Byte)/

Load EEPROM Memory Page (page access)

相關(guān)PDF資料	PDF描述
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