ATTINY24A-SSUR Atmel, ATTINY24A-SSUR Datasheet - Page 145

• Manufacturer Part Number: ATTINY24A-SSUR
• Description: MCU AVR 2KB FLASH 20MHZ 14SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY24A-SSUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 12
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Package: 14SOIC W
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 12
• Interface Type: SPI/USI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8183C–AVR–03/11
done by first turning off the ADC, then changing multiplexer settings and then turn on the ADC.
Alternatively, the first conversion results after changing multiplexer settings should be discarded.
Table 16-4.
Notes:
See
tions of offset calibration channels. MUX0 bit works as a gain selection bit for differential
channels. When MUX0 is cleared (‘0’) 1x gain is selected and when it is set (‘1’) 20x gain is
selected. For normal differential channel pairs MUX5 bit work as a polarity reversal bit. Toggling
of the MUX5 bit exhanges the positive and negative channel other way a round.
Table 16-5.
Single Ended Input
ADC0 (PA0)
ADC1 (PA1)
ADC2 (PA2)
ADC3 (PA3)
ADC4 (PA4)
ADC5 (PA5)
ADC6 (PA6)
ADC7 (PA7)
Reserved for differential channels
0V (AGND)
1.1V (I Ref)
ADC8
Reserved for offset calibration
Reserved for reversal differential channels
Positive Differential Input
ADC0 (PA0)
ADC1 (PA1)
Table 16-5
(3)
1. See
2. After switching to internal voltage reference the ADC requires a settling time of 1ms before
3. See
4. For offset calibration, only. See
measurements are stable. Conversions starting before this may not be reliable. The ADC must
be enabled during the settling time.
(2)
Single-Ended Input channel Selections
Differential Input channel Selections.
Table 16-5
“Temperature Measurement” on page
for details of selections of differential input channel selections as well as selec-
for details.
(4)
(1)
Negative Differential Input
ADC0 (PA0)
ADC1 (PA1)
ADC3 (PA3)
ADC0 (PA0)
ADC2 (PA2)
ADC3 (PA3)
(1)
Table 16-5 on page 145
(1)
143.
ATtiny24A/44A/84A
and
“Operation” on page
Gain 1x
001000
001010
101000
001100
001110
N/A
001000 - 011111
100011 - 100111
101000 - 111111
MUX[5:0]
MUX[5:0]
000000
000001
000010
000011
000100
000101
000110
000111
100000
100001
100010
Gain 20x
100011
001001
001011
101001
001101
001111
133.
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