ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 110

• 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

18.2.2
110
ATmega406
CADCSRB – CC-ADC Control and Status Register B
• Bits 2:1 – CADSI1:0: CC-ADC Current Sampling Interval
The CADSI bits determine the current sampling interval for the Regular Current detection as
shown in
Table 18-2.
Notes:
• Bit 0 – CADSE: CC-ADC Current Sampling Enable
When the CADSE bit is written to one, the ongoing CC-ADC conversion is aborted, and the CC-
ADC enters Regular Current detection mode.
• Bits 7, 3 – Res: Reserved
These bits are reserved bits in the ATmega406 and will always read as zero.
• Bit 6 – CADACIE: CC-ADC Accumulate Current Interrupt Enable
When the CADACIE bit is set (one), and the I-bit in the Status Register is set (one), the CC-ADC
Accumulate Current Interrupt is enabled.
• Bit 5 – CADRCIE: CC-ADC Regular Current Interrupt Enable
When the CADRCIE bit is set (one), and the I-bit in the Status Register is set (one), the CC-ADC
Regular Current Interrupt is enabled.
• Bit 4 – CADICIE: CC-ADC Instantaneous Current Interrupt Enable
When the CADICIE bit is set (one), and the I-bit in the Status Register is set (one), the CC-ADC
Instantaneous Current Interrupt is enabled.
• Bit 2 – CADACIF: CC-ADC Accumulate Current Interrupt Flag
The CADACIF bit is set (one) after the Accumulate Current conversion has completed. The CC-
ADC Accumulate Current Interrupt is executed if the CADACIE bit and the I-bit in SREG are set
(one). CADACIF is cleared by hardware when executing the corresponding Interrupt Handling
Vector. Alternatively, CADACIF is cleared by writing a logic one to the flag.
• Bit 1 – CADRCIF: CC-ADC Regular Current Interrupt Flag
Bit
(0xE5)
Read/Write
Initial Value
1. The actual value of depends on the actual frequency of the
2. Sampling time ~ 12 ms.
CADSI1:0
Table
See
00
01
10
11
CC-ADC Regular Current Sampling Interval
”Electrical Characteristics” on page
R
7
–
0
18-2. The current sampling interval is only used if the CADSE bit is set.
CADACIE
R/W
6
0
CADRCIE
R/W
5
0
CC-ADC Regular Current Sampling Interval
CADICIE
R/W
4
0
225.
250 ms (+ sampling time)
500 ms (+ sampling time)
1 s (+ sampling time)
2 s (+ sampling time)
R
3
–
0
CADACIF
R/W
2
0
”Slow RC Oscillator” on page
CADRCIF
R/W
1
0
CADICIF
R/W
(1)(2)
0
0
2548E–AVR–07/06
CADCSRB
27.