ATMEGA406-1AAU Atmel, ATMEGA406-1AAU Datasheet - Page 154
ATMEGA406-1AAU
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA406-1AAU
Manufacturer:
AT
Quantity:
20 000
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25.8.1
154
ATmega406
Master Transmitter Mode
In
bers in the circles show the status code held in TWSR, with the prescaler bits masked to zero. At
these points, actions must be taken by the application to continue or complete the TWI transfer.
The TWI transfer is suspended until the TWINT flag is cleared by software.
When the TWINT flag is set, the status code in TWSR is used to determine the appropriate soft-
ware action. For each status code, the required software action and details of the following serial
transfer are given in
these tables.
In the Master Transmitter mode, a number of data bytes are transmitted to a slave receiver (see
Figure
mat of the following address packet determines whether Master Transmitter or Master Receiver
mode is to be entered. If SLA+W is transmitted, MT mode is entered, if SLA+R is transmitted,
MR mode is entered. All the status codes mentioned in this section assume that the prescaler
bits are zero or are masked to zero.
Figure 25-12. Data Transfer in Master Transmitter Mode
Figure 25-13
SDA
SCL
S:
Rs:
R:
W:
A:
A:
Data:
P:
SLA:
25-12). In order to enter a Master mode, a START condition must be transmitted. The for-
TRANSMITTER
Device 1
MASTER
to
Figure
Table 25-3
25-19, circles are used to indicate that the TWINT flag is set. The num-
Device 2
RECEIVER
SLAVE
START condition
REPEATED START condition
Read bit (high level at SDA)
Write bit (low level at SDA)
Acknowledge bit (low level at SDA)
Not acknowledge bit (high level at SDA)
8-bit data byte
STOP condition
Slave Address
to
Table
Device 3
25-6. Note that the prescaler bits are masked to zero in
........
Device n
V
BUS
R1
R2
2548E–AVR–07/06
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