AT90PWM3 datasheet(23/361 Pages) ATMEL

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AT90PWM3 데이터시트(PDF) 23 Page - ATMEL Corporation

부품명	AT90PWM3

상세설명	8-bit Microcontroller with 8K Bytes In-System Programmable Flash

PDF	361 Pages

Scroll/Zoom	100%

제조업체	ATMEL [ATMEL Corporation]

홈페이지	http://www.atmel.com

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23 / 361 page

4317J–AVR–08/10

AT90PWM2/3/2B/3B

The calibrated Oscillator is used to time the EEPROM accesses. Table 6-2 lists the typical pro-

gramming time for EEPROM access from the CPU.

The following code examples show one assembly and one C function for writing to the

EEPROM. The examples assume that interrupts are controlled (e.g. by disabling interrupts glob-

ally) so that no interrupts will occur during execution of these functions. The examples also

assume that no Flash Boot Loader is present in the software. If such code is present, the

EEPROM write function must also wait for any ongoing SPM command to finish.

Table 6-2.

EEPROM Programming Time.

Symbol

Number of Calibrated RC Oscillator Cycles

Typ Programming Time

EEPROM write

(from CPU)

26368

3.3 ms

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