ATTINY45-15SZ Atmel, ATTINY45-15SZ Datasheet - Page 114
ATTINY45-15SZ
Manufacturer Part Number
ATTINY45-15SZ
Description
MCU AVR 4K FLASH 15MHZ 8-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-15MZ.pdf
(196 pages)
Specifications of ATTINY45-15SZ
Package / Case
8-SOIC (3.9mm Width)
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
6
Eeprom Size
256 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
256 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 4x10b
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
Part Number:
ATTINY45-15SZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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18.4
114
Prescaling and Conversion Timing
ATtiny25/45/85
Figure 18-2. ADC Auto Trigger Logic
Using the ADC Interrupt Flag as a trigger source makes the ADC start a new conversion as soon
as the ongoing conversion has finished. The ADC then operates in Free Running mode, con-
stantly sampling and updating the ADC Data Register. The first conversion must be started by
writing a logical one to the ADSC bit in ADCSRA. In this mode the ADC will perform successive
conversions independently of whether the ADC Interrupt Flag, ADIF is cleared or not.
If Auto Triggering is enabled, single conversions can be started by writing ADSC in ADCSRA to
one. ADSC can also be used to determine if a conversion is in progress. The ADSC bit will be
read as one during a conversion, independently of how the conversion was started.
Figure 18-3. ADC Prescaler
By default, the successive approximation circuitry requires an input clock frequency between 50
kHz and 200 kHz to get maximum resolution. If a lower resolution than 10 bits is needed, the
input clock frequency to the ADC can be higher than 200 kHz to get a higher sample rate. It is
not recommended to use a higher input clock frequency than 1 MHz.
ADSC
SOURCE n
ADIF
SOURCE 1
.
.
.
.
START
ADEN
ADTS[2:0]
ADPS0
ADPS1
ADPS2
CK
DETECTOR
EDGE
Reset
ADATE
7-BIT ADC PRESCALER
ADC CLOCK SOURCE
START
CONVERSION
PRESCALER
LOGIC
CLK
7598H–AVR–07/09
ADC
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