ATtiny87 Atmel Corporation, ATtiny87 Datasheet - Page 201

• Manufacturer Part Number: ATtiny87
• Manufacturer: Atmel Corporation

Specifications of ATtiny87

• Flash (kbytes): 8 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 3
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8265B–AVR–09/10
Figure 17-11. Integral Non-linearity (INL)
Figure 17-12. Differential Non-linearity (DNL)
• Differential Non-linearity (DNL): The maximum deviation of the actual code width (the
• Quantization Error: Due to the quantization of the input voltage into a finite number of
• Absolute Accuracy: The maximum deviation of an actual (unadjusted) transition compared
interval between two adjacent transitions) from the ideal code width (1 LSB). Ideal value: 0
LSB.
codes, a range of input voltages (1 LSB wide) will code to the same value. Always ± 0.5
LSB.
to an ideal transition for any code. This is the compound effect of offset, gain error,
differential error, non-linearity, and quantization error. Ideal value: ± 0.5 LSB.
Output Code
Output Code
0x000
0x3FF
0
1 LSB
V
REF
V
REF
Input Voltage
Input Voltage
Ideal ADC
Actual ADC
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