ATMEGA16HVA-4TU Atmel, ATMEGA16HVA-4TU Datasheet - Page 106

• Manufacturer Part Number: ATMEGA16HVA-4TU
• Description: MCU AVR 16K FLASH 4MHZ 28-TSOP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16HVA-4TU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 7
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 9 V
• Data Converters: A/D 5x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 28-TSOP
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 19-3. Accumulation Current Conversions
19.4
Figure 19-4. Regular Current Detection Mode (CADSE=1)
106
Enable
Accumulation
Interrupt
Accumulation
Data
Read byte 1
Read byte 2
Read byte 3
Read byte 4
Regular Current
Detection Operation
Regular Current
Detection Interupt
Regular Discharge
Current Threshold
Regular Charge
Current Threshold
Regular Current Detection Operation
ATmega8HVA/16HVA
Current through R
By setting the CADSE bit in CADCSRA the CC-ADC will enter a special Regular Current Detec-
tion Sampling Mode.
In this mode the CC-ADC will do one Instantaneous Current Conversion on regular sampling
intervals while updating of the Accumulation Current Register is automatically disabled. The
sampling interval is controlled by writing to the CADSI bits in CADCSRA.
Each time a conversion is completed the result is compared with Regular Charge/Discharge
Threshold levels specified in the CADRC register. If interrupt is enabled and the voltage is
above/below the specified limit a Regular Current Detection Interrupt will be issued.
illustrates the Regular Current Detection Mode
The Regular Current Detection has a separate Interrupt and by setting the CADRCIE bit, this
interrupt is enabled. Note that this Regular Current Detection interrupt cannot wake-up the CPU
from sleep mode. To be able to use the Regular Current Detection function in sleep modes, the
~250, 500, 1000, 2000ms
Turn-off
1, 2, 3, or 4s settling
INVALID DATA
SENSE
Measure
~12ms
125, 250, 500,
or 1000 ms
DATA 1
~250, 500, 1000, 2000ms
125, 250, 500,
or 1000 ms
DATA 2
Turn-off
1000, or 2000 ms
250, 500,
DATA 3
Measure
~12ms
8024A–AVR–04/08
Figure 19-4
DATA 4