ATMEGA406-1AAU Atmel, ATMEGA406-1AAU Datasheet - Page 49

• 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

10. Wake-up Timer
10.1
10.2
10.2.1
2548E–AVR–07/06
Overview
Register Description
WUTCSR – Wake-up Timer Control and Status Register
The following section describes the Wake-up Timer in the ATmega406.
•
•
•
•
The Wake-up Timer is clocked either from the Slow RC Oscillator or from the external 32 kHz
crystal oscillator. See
Wake-up Timer prescaler, the Wake-up interval can be adjusted from 31.25 ms to 4 s. Eight dif-
ferent clock cycle periods can be selected to determine the Time-out period.
Figure 10-1. Wake-up Timer
• Bit 7 – WUTIF: Wake-up Timer Interrupt Flag
The WUTIF bit is set (one) when an overflow occurs in the Wake-up Timer. WUTIF is cleared by
hardware when executing the corresponding interrupt handling vector. Alternatively, WUTIF is
cleared by writing a logic one to the flag. When the SREG I-bit, WUTIE (Wake-up Timer Interrupt
Enable), and WUTIF are set (one), the Wake-up Timer interrupt is executed.
Bit
(0x62)
Read/Write
Initial Value
One Wake-up Timer Interrupt
8 Selectable Time-out Periods
Separate Wake-up Timer Calibration Flag
Separate Clock Source
WUTIF
R/W
OSCILLATOR
7
0
OSCILLATOR
SLOW RC
32 kHz
”Run-Time Clock Source Select” on page 28
WUTR
WUTP0
WUTP1
WUTP2
WUTE
WUTIE
R/W
6
0
WUTCF
1/4
R/W
5
0
WUTR
R/W
clk
4
0
WUT
WUTE
R/W
3
0
PRESCALER
WAKE-UP
WUTIF
WUTP2
R/W
2
0
for details. By controlling the
WUTP1
R/W
1
0
ATmega406
WUTCF
WUTP0
R/W
0
0
WUTCSR
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