ATTINY25V-15ST Atmel, ATTINY25V-15ST Datasheet - Page 126
ATTINY25V-15ST
Manufacturer Part Number
ATTINY25V-15ST
Description
MCU AVR 2K FLASH 4MHZ 8-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-15MZ.pdf
(196 pages)
Specifications of ATTINY25V-15ST
Package / Case
8-SOIC (3.9mm Width)
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Speed
8MHz
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
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY25V-15ST
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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18.7.7
18.7.7.1
18.7.7.2
18.7.8
126
ATtiny25/45/85
The ADC Data Register – ADCL and ADCH
ADC Control and Status Register B – ADCSRB
ADLAR = 0
ADLAR = 1
When an ADC conversion is complete, the result is found in these two registers.
When ADCL is read, the ADC Data Register is not updated until ADCH is read. Consequently, if
the result is left adjusted and no more than 8-bit precision is required, it is sufficient to read
ADCH. Otherwise, ADCL must be read first, then ADCH.
The ADLAR bit in ADMUX, and the MUXn bits in ADMUX affect the way the result is read from
the registers. If ADLAR is set, the result is left adjusted. If ADLAR is cleared (default), the result
is right adjusted.
• ADC9:0: ADC Conversion Result
These bits represent the result from the conversion, as detailed in
page
• Bit 7– BIN: Bipolar Input Mode
The gain stage is working in the unipolar mode as default, but the bipolar mode can be selected
by writing the BIN bit in the ADCSRB register. In the unipolar mode only one-sided conversions
are supported and the voltage on the positive input must always be larger than the voltage on
the negative input. Otherwise the result is saturated to the voltage reference. In the bipolar mode
two-sided conversions are supported and the result is represented in the two’s complement
form. In the unipolar mode the resolution is 10 bits and the bipolar mode the resolution is 9 bits +
1 sign bit.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
121.
ADC7
ADC9
ADC1
R/W
BIN
15
15
R
R
R
R
–
7
0
0
7
0
0
7
0
ADC6
ADC8
ADC0
ACME
R/W
14
14
R
R
–
6
0
0
R
R
6
0
0
6
0
ADC5
ADC7
R/W
IPR
13
13
R
R
R
R
–
5
0
0
–
5
0
0
5
0
ADC4
ADC6
12
12
R
R
–
4
0
0
R
R
–
4
0
0
R
4
–
0
ADC3
ADC5
11
11
R
R
–
3
0
0
R
R
–
3
0
0
R
3
–
0
ADTS2
ADC2
ADC4
R/W
10
10
R
R
R
R
–
2
0
0
–
2
0
0
2
0
“ADC Conversion Result” on
ADTS1
ADC9
ADC1
ADC3
R/W
R
R
9
1
0
0
R
R
9
–
1
0
0
1
0
ADTS0
ADC8
ADC0
ADC2
R/W
R
R
8
0
0
0
R
R
0
0
8
–
0
0
0
7598H–AVR–07/09
ADCSRB
ADCH
ADCL
ADCH
ADCL
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