ATMEGA406-1AAU Atmel, ATMEGA406-1AAU Datasheet - Page 132

• Manufacturer Part Number: ATMEGA406-1AAU
• Description: IC AVR MCU 40K 1MHZ 48LQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA406-1AAU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 1MHz
• Connectivity: I²C
• Peripherals: POR, WDT
• Number Of I /o: 18
• Program Memory Size: 40KB (20K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 25 V
• Data Converters: A/D 10x12b
• Oscillator Type: Internal
• Operating Temperature: -30°C ~ 85°C
• Package / Case: 48-LQFP
• Processor Series: ATMEGA48x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: 2-Wire
• Maximum Clock Frequency: 1 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 30 C
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 1MHz
• Total Internal Ram Size: 2KB
• # I/os (max): 18
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5/9/12/15/18/24V
• Operating Supply Voltage (max): 25V
• Operating Supply Voltage (min): 4V
• On-chip Adc: 10-chx12-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -30C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Package Type: LQFP
• Controller Family/series: AVR MEGA
• No. Of I/o's: 18
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 2KB
• Cpu Speed: 1MHz
• Rohs Compliant: Yes
• For Use With: 770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22.7.7
132
ATmega406
BPIR – Battery Protection Interrupt Register
• Bit 7 – DUVIF: Deep Under-voltage Early Warning Interrupt Flag
If the voltage at VFET pin is below the Deep Under-voltage detection level and only 250 ms is
left of the Deep Under-voltage delay, DUVIF becomes set. The flag must be cleared by writing a
logical one to it.
• Bit 6 – COCIF: Charge Over-current Protection Activated Interrupt Flag
When the Charge Over-current Protection is activated, COCIF becomes set. The flag must be
cleared by writing a logical one to it.
• Bit 5 – DOCIF: Discharge Over-current Protection Activated Interrupt Flag
When the Discharge Over-current Protection is activated, DOCIF becomes set. The flag must be
cleared by writing a logical one to it.
• Bit 4 – SCIF: Short-circuit Protection Activated Interrupt Flag
When the Short-circuit Protection is activated, SCIF becomes set. The flag must be cleared by
writing a logical one to it.
• Bit 3 – DUVIE: Deep Under-voltage Early Warning Interrupt Enable
The DUVIE bit enables interrupt caused by the Deep Under-voltage Early Warning Interrupt Flag
• Bit 2 – COCIE: Charge Over-current Protection Activated Interrupt Enable
The COCIE bit enables interrupt caused by the Charge Over-current Protection Activated Inter-
rupt Flag.
• Bit 1 – DOCIE: Discharge Over-current Protection Activated Interrupt Enable
The DOCIE bit enables interrupt caused by the Discharge Over-current Protection Activated
Interrupt Flag.
• Bit 0 – SCIE: Short-circuit Protection Activated Interrupt Enable
The SCIE bit enables interrupt caused by the Short-circuit Protection Activated Interrupt Flag.
If one of the Battery Protection Interrupt Flags is set, and the corresponding Interrupt Enable bit
and the I-bit in the Status Register (SREG) are set, the MCU will jump to the Battery Protection
interrupt vector. The application software must read the Battery Protection Interrupt Register to
determine the cause of the interrupt. The interrupt flags will not be cleared when the interrupt
routine is executed, they must be cleared by writing a logical one to them.
Bit
(0xF2)
Read/Write
Initial Value
DUVIF
R/W
7
0
COCIF
R/W
6
0
DOCIF
R/W
5
0
SCIF
R/W
4
0
DUVIE
R/W
3
0
COCIE
R/W
2
0
DOCIE
R/W
1
0
SCIE
R/W
0
0
2548E–AVR–07/06
BPIR