ATTINY25-15MZ Atmel, ATTINY25-15MZ Datasheet - Page 124
![MCU AVR 2K FLASH 15MHZ 20-QFN](/photos/30/99/309923/qfn-20_sml.jpg)
ATTINY25-15MZ
Manufacturer Part Number
ATTINY25-15MZ
Description
MCU AVR 2K FLASH 15MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-15MZ.pdf
(196 pages)
Specifications of ATTINY25-15MZ
Package / Case
20-QFN
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
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 4x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Processor Series
ATTINY2x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
UART, SPI, USI
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 4 Channel
Data Rom Size
128 B
A/d Bit Size
10 bit
A/d Channels Available
4
Height
0.75 mm
Length
4 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Width
4 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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18.7.6
124
ATtiny25/45/85
ADC Control and Status Register A – ADCSRA
• Bits 3:0 – MUX3:0: Analog Channel and Gain Selection Bits
The value of these bits selects which combination of analog inputs are connected to the ADC. In
case of differential input (ADC0 - ADC1 or ADC2 - ADC3), gain selection is also made with these
bits. Selecting ADC2 or ADC0 as both inputs to the differential gain stage enables offset mea-
surements. Selecting the single-ended channel ADC4 enables the temperature sensor. Refer to
Table 18-4
effect until this conversion is complete (ADIF in ADCSRA is set).
Table 18-4.
1.
2.
• Bit 7 – ADEN: ADC Enable
Writing this bit to one enables the ADC. By writing it to zero, the ADC is turned off. Turning the
ADC off while a conversion is in progress, will terminate this conversion.
• Bit 6 – ADSC: ADC Start Conversion
In Single Conversion mode, write this bit to one to start each conversion. In Free Running mode,
write this bit to one to start the first conversion.
Bit
Read/Write
Initial Value
MUX3..0
0101
0000
0001
0010
0011
0100
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
For offset calibration only .
For Temperature Sensor
(1)
for details. If these bits are changed during a conversion, the change will not go into
ADEN
R/W
Input Channel Selections
7
0
ADSC
Single Ended
R/W
ADC0 (PB5)
ADC1 (PB2)
ADC2 (PB4)
ADC3 (PB3)
6
0
1.1V/2.56V
ADC4
Input
N/A
N/A
0V
ADATE
R/W
(2)
5
0
See “Operation” on page 112.
ADIF
R/W
4
0
Differential Input
ADC2 (PB3)
ADC2 (PB3)
ADC2 (PB3)
ADC2 (PB3)
ADC0 (PB5)
ADC0 (PB5)
ADC0 (PB5)
ADC0 (PB5)
Positive
ADIE
R/W
3
0
ADPS2
R/W
2
0
Differential Input
ADC2 (PB3)
ADC2 (PB3)
ADC3 (PB4)
ADC3 (PB4)
ADC0 (PB5)
ADC0 (PB5)
ADC1 (PB2)
ADC1 (PB2)
ADPS1
R/W
Negative
1
0
N/A
N/A
ADPS0
R/W
0
0
ADCSRA
7598H–AVR–07/09
Gain
20x
20x
20x
20x
1x
1x
1x
1x
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