ATmega16M1 datasheet(45/365 Pages) ATMEL

номер детали	ATmega16M1

подробное описание детали	8-bit Microcontroller with 16K/32K/64K Bytes In-System Programmable Flash

PDF	365 Pages

Scroll/Zoom	100%

производитель	ATMEL [ATMEL Corporation]

домашняя страница	http://www.atmel.com

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45 / 365 page

7647F–AVR–04/09

ATmega16/32/64/M1/C1

6.7.6

Port Pins

When entering a sleep mode, all port pins should be configured to use minimum power. The

most important is then to ensure that no pins drive resistive loads. In sleep modes where both

the I/O clock (clk

I/O) and the ADC clock (clkADC) are stopped, the input buffers of the device will

be disabled. This ensures that no power is consumed by the input logic when not needed. In

some cases, the input logic is needed for detecting wake-up conditions, and it will then be

enabled. Refer to the section “I/O-Ports” on page 62 for details on which pins are enabled. If the

input buffer is enabled and the input signal is left floating or have an analog signal level close to

CC/2, the input buffer will use excessive power.

For analog input pins, the digital input buffer should be disabled at all times. An analog signal

level close to V

CC/2 on an input pin can cause significant current even in active mode. Digital

input buffers can be disabled by writing to the Digital Input Disable Registers (DIDR1 and

DIDR0). Refer to “Digital Input Disable Register 1– DIDR1” and “Digital Input Disable Register 0

– DIDR0” on page 269 and page 249 for details.

6.7.7

On-chip Debug System

If the On-chip debug system is enabled by OCDEN Fuse and the chip enter sleep mode, the

main clock source is enabled, and hence, always consumes power. In the deeper sleep modes,

this will contribute significantly to the total current consumption.

ATmega16M1 датащи(PDF) 45 Page - ATMEL Corporation