ATtiny88 Automotive Atmel Corporation, ATtiny88 Automotive Datasheet - Page 137
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ATtiny88 Automotive
Manufacturer Part Number
ATtiny88 Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny88 Automotive
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
28
Ext Interrupts
28
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
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)
64
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
2
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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18. Analog-to-Digital Converter
18.1
18.2
7701E–AVR–02/11
Features
Overview
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The Atmel
verter (ADC). The ADC is connected to 8-pin port A for external sources. In addition to
external sources, the internal temperature sensor can be measured by the ADC. The analog
multiplexer allows 8 single-ended channels or 12 differential channels from port A. The pro-
grammable gain stage provides amplification steps 0dB (1x) and 26dB (20x) for 12 differential
ADC channels.
The ADC contains a sample-and-hold circuit which ensures that the input voltage to the ADC
is held at a constant level during conversion. A block diagram of the ADC is shown in
18-1 on page
And internal reference voltage of nominally 1.1V is provided on chip. Alternatively, VCC can
be used as reference voltage for single-ended channels. There is also an option to use an
external voltage reference and turn off the internal voltage reference.
10-bit Resolution
1.0 LSB Integral Non-linearity
±2 LSB Absolute Accuracy
65 - 260µs Conversion Time
Up to 76kSPS at Maximum Resolution
Eight Multiplexed Single-Ended Input Channels
Twelve differential input channels with selectable gain (1x, 20x)
Temperature sensor input channel
Optional Left Adjustment for ADC Result Readout
0 - V
1.1V ADC Reference Voltage
Free-Running or Single-Conversion Mode
ADC Start Conversion by Auto Triggering on Interrupt Sources
Interrupt on ADC Conversion Complete
Sleep Mode Noise Canceller
Unipolar / Bipolar Input Mode
Input Polarity Reversal channels
CC
ADC Input Voltage Range
®
ATtiny24/44/84 features a 10-bit successive approximation analog-to-digital con-
138.
Atmel ATtiny24/44/84 [Preliminary]
Figure
137
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