ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 234

• Manufacturer Part Number: ATmega406
• Manufacturer: Atmel Corporation

Specifications of ATmega406

• Flash (kbytes): 40 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 1 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 18
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -30 to 85
• I/o Supply Class: 4.0 to 25
• Operating Voltage (vcc): 4.0 to 25
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 3
• Pwm Channels: 2
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

31.3
234
Internal Oscillator Speed
ATmega406
Figure 31-5. Watchdog Oscillator Frequency vs. Temperature (V
Figure 31-6. Calibrated 1 MHz RC Oscillator Frequency vs. Temperature (V
1.025
1.015
1.005
0.995
0.985
0.975
1.02
1.01
0.99
0.98
126
125
124
123
122
121
120
119
118
117
CALIBRATED 1 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
1
-40
-40
WATCHDOG OSCILLATOR FREQUENCY vs. TEMPERATURE
-30
-30
-20
-20
-10
-10
0
0
10
10
20
20
V
V
Temperature
Temperature
CC
CC
= 3.3 V
= 3.3 V
30
30
40
40
50
50
60
60
70
70
80
80
CC
= 3.3V)
90
90
100
100
CC
= 3.3V)
2548E–AVR–07/06