ATTINY261-15MZ Atmel, ATTINY261-15MZ Datasheet - Page 150
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ATTINY261-15MZ
Manufacturer Part Number
ATTINY261-15MZ
Description
MCU AVR 2K FLASH 15MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY261-15MZ
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
16
Eeprom Size
128 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
128 x 8
Program Memory Size
2KB (2K x 8)
Data Converters
A/D 11x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY261-15MZ
Manufacturer:
ATMEL
Quantity:
5 000
Part Number:
ATTINY261-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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19.6.1
19.6.2
150
ATtiny261/ATtiny461/ATtiny861
ADC Input Channels
ADC Voltage Reference
Note that the conversion starts on the following rising ADC clock edge after ADSC is written. The
user is thus advised not to write new channel or reference selection values to ADMUX until one
ADC clock cycle after ADSC is written.
If Auto Triggering is used, the exact time of the triggering event can be indeterministic. Special
care must be taken when updating the ADMUX Register, in order to control which conversion
will be affected by the new settings.
If both ADATE and ADEN is written to one, an interrupt event can occur at any time. If the
ADMUX Register is changed in this period, the user cannot tell if the next conversion is based
on the old or the new settings. ADMUX can be safely updated in the following ways:
When updating ADMUX in one of these conditions, the new settings will affect the next ADC
conversion.
When changing channel selections, the user should observe the following guidelines to ensure
that the correct channel is selected:
In Single Conversion mode, always select the channel before starting the conversion. The chan-
nel selection may be changed one ADC clock cycle after writing one to ADSC. However, the
simplest method is to wait for the conversion to complete before changing the channel selection.
In Free Running mode, always select the channel before starting the first conversion. The chan-
nel selection may be changed one ADC clock cycle after writing one to ADSC. However, the
simplest method is to wait for the first conversion to complete, and then change the channel
selection. Since the next conversion has already started automatically, the next result will reflect
the previous channel selection. Subsequent conversions will reflect the new channel selection.
The voltage reference for the ADC (V
ended channels that exceed V
either V
version result after switching voltage reference source may be inaccurate, and the user is
advised to discard this result.
a. When ADATE or ADEN is cleared.
b. During conversion, minimum one ADC clock cycle after the trigger event.
c. After a conversion, before the Interrupt Flag used as trigger source is cleared.
CC
, or internal 1.1V / 2.56V voltage reference, or external AREF pin. The first ADC con-
REF
will result in codes close to 0x3FF. V
REF
) indicates the conversion range for the ADC. Single
REF
can be selected as
7753F–AVR–01/11
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