ATMEGA406-1AAU Atmel, ATMEGA406-1AAU Datasheet - Page 3

• 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

2. Overview
2.1
Figure 2-1.
2548ES–AVR–07/06
Block Diagram
VFET
VREG
RESET
BATT
XTAL1
XTAL2
Block Diagram
VCC
GND
Supervision
Generation
Watchdog
Watchdog
The ATmega406 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the ATmega406
achieves throughputs approaching 1 MIPS at 1 MHz.
The ATmega406 provides the following features: a Voltage Regulator, dedicated Battery Protec-
tion Circuitry, integrated cell balancing FETs, high-voltage analog front-end, and an MCU with
two ADCs with On-chip voltage reference for battery fuel gauging.
The voltage regulator operates at a wide range of voltages, 4.0 - 25 volts. This voltage is regu-
lated to a constant supply voltage of nominally 3.3 volts for the integrated logic and analog
functions.
The battery protection monitors the battery voltage and charge/discharge current to detect illegal
conditions and protect the battery from these when required. The illegal conditions are deep
under-voltage during discharging, short-circuit during discharging and over-current during charg-
ing and discharging.
Oscillator
Oscillator
Regulator
Circuits /
RESET
POR &
Charger
Voltage
Power
Detect
Timer
Clock
SCL
Wake-Up
Flash
Timer
TWI
PORTD (2)
PD1..0
SCA
CPU
DATA BUS
SRAM
JTAG
PORTC (1)
PC0
PORTB (8)
PB7..0
16 bit T/C1
EEPROM
8 bit T/C0
PORTA (8)
PA7..0
Counter ADC
Protection
Reference
Balancing
Coulumb
Control
Battery
Voltage
Voltage
ADC
FET
Cell
PA3..0
ATmega406
PPI
NNI
PVT
PV4
PV3
PV2
PV1
SGND
NV
VREF
VREFGND
PI
NI
OPC
OC
OD
3