ATtiny20 Atmel Corporation, ATtiny20 Datasheet - Page 175

• Manufacturer Part Number: ATtiny20
• Manufacturer: Atmel Corporation

Specifications of ATtiny20

• Flash (kbytes): 2 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 5
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 12
• Ext Interrupts: 12
• 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): 0.12
• Self Program Memory: NO
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 3
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

20.4.2
Table 20-3.
20.5
8235B–AVR–04/11
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
System and Reset Characteristics
External Clock Drive
Parameter
Clock Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from one clock cycle to the next
External Clock Drive Characteristics
Figure 20-2. External Clock Drive Waveform
Table 20-4.
Note:
Symbol
V
t
V
t
TOUT
RST
RST
BG
1. Values are guidelines, only
V
IL1
Parameter
RESET Pin Threshold
Voltage
Internal bandgap voltage
Minimum pulse width on
RESET Pin
Time-out after reset
Reset and Internal Voltage Characteristics
V
IH1
V
Min.
250
100
100
CC
0
= 1.8 - 5.5V
V
T
V
V
V
BOD disabled
BOD enabled
Condition
A
CC
CC
CC
CC
= 25°C
Max.
2.0
2.0
= 2.7V
= 1.8V
= 3V
= 5V
4
2
V
Min.
125
CC
40
40
0
= 2.7 - 5.5V
0.2 V
Min
1.0
Max.
1.6
1.6
(1)
8
2
CC
Typ
2000
V
700
400
128
1.1
64
Min.
CC
83
20
20
0
(1)
= 4.5 - 5.5V
ATtiny20
0.9V
Max
128
256
Max.
1.2
0.5
0.5
12
2
CC
(1)
Units
Units
MHz
ms
ns
ns
ns
ns
μs
μs
%
V
V
175