ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 112

• 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

18.2.5
18.2.6
112
ATmega406
CADRCC – CC-ADC Regular Charge Current
CADRDC – CC-ADC Regular Discharge Current
When CADAC0 is read, the CC-ADC Accumulate Current register is not updated until CADAC3
is read. Reading the registers in the sequence CADAC0, CADAC1, CADAC2, CADAC3 will
ensure that consistent values are read.
The CC-ADC Regular Charge Current Register determines the threshold level for the Regular
Charge Current detection. When the result of a CC-ADC Instantaneous Current conversion is
positive with a value greater than, or equal to, the Regular Charge Current level, the CC-ADC
Regular Current Interrupt Flag is set.
The value in this register is specified in 2's complement format, and it defines the eight least sig-
nificant bits of the Regular Charge Current level. The most significant bits of the Regular Charge
Current level are always zero. The programmable range for the Regular Charge Current level is
given in
Table 18-3.
The CC-ADC Regular Charge Current Register does not affect the setting of the CC-ADC Con-
version Complete Interrupt Flag.
The CC-ADC Regular Discharge Current Register determines the threshold level for the Regular
Discharge Current detection. When the result of a CC-ADC Instantaneous Current conversion is
negative with an absolute value greater than, or equal to, the Regular Discharge Current level,
the CC-ADC Regular Current Interrupt Flag is set.
The value in this register is specified in 2's complement format, and it defines the eight least sig-
nificant bits of the Regular Discharge Current level. The most significant bits of the Regular
Bit
(0xE6)
Read/Write
Initial Value
Bit
(0xE7)
Read/Write
Initial Value
Voltage (µV)
Current (mA)
Table
R/W
18-3.
Programmable Range for the Regular Charge Current Level
7
0
R/W
7
0
R
R
SENSE
SENSE
R/W
6
0
R/W
6
0
= 5 mΩ
= 7 mΩ
R/W
5
0
R/W
5
0
R/W
R/W
4
0
CADRDC[7:0]
4
0
CADRCC[7:0]
Minimum
R/W
R/W
0
0
0
3
0
3
0
R/W
R/W
2
0
2
0
Maximum
13700
2740
1957
R/W
R/W
1
0
1
0
R/W
R/W
0
0
0
0
2548E–AVR–07/06
Step Size
53.7
10.7
7.7
CADRCC
CADRDC