ATA6603P-PLQW Atmel, ATA6603P-PLQW Datasheet - Page 228
ATA6603P-PLQW
Manufacturer Part Number
ATA6603P-PLQW
Description
MCU W/LIN TXRX REG WTCHDG 48-QFN
Manufacturer
Atmel
Series
AVR® ATA66 LIN-SBCr
Datasheet
1.ATA6603P-PLQW.pdf
(360 pages)
Specifications of ATA6603P-PLQW
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-QFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATA6603P-PLQW
Manufacturer:
ATMEL
Quantity:
2 000
Part Number:
ATA6603P-PLQW
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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4.19
4.19.1
4.19.2
4.19.2.1
228
2-wire Serial Interface
ATA6602/ATA6603
Features
2-wire Serial Interface Bus Definition
TWI Terminology
•
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•
•
•
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The 2-wire Serial Interface (TWI) is ideally suited for typical microcontroller applications. The
TWI protocol allows the systems designer to interconnect up to 128 different devices using only
two bi-directional bus lines, one for clock (SCL) and one for data (SDA). The only external hard-
ware needed to implement the bus is a single pull-up resistor for each of the TWI bus lines. All
devices connected to the bus have individual addresses, and mechanisms for resolving bus
contention are inherent in the TWI protocol.
Figure 4-77. TWI Bus Interconnection
The following definitions are frequently encountered in this section.
Table 4-87.
The PRTWI bit in
enable the 2-wire Serial Interface.
Term
Master
Slave
Transmitter
Receiver
Simple Yet Powerful and Flexible Communication Interface, only two Bus Lines Needed
Both Master and Slave Operation Supported
Device can Operate as Transmitter or Receiver
7-bit Address Space Allows up to 128 Different Slave Addresses
Multi-master Arbitration Support
Up to 400 kHz Data Transfer Speed
Slew-rate Limited Output Drivers
Noise Suppression Circuitry Rejects Spikes on Bus Lines
Fully Programmable Slave Address with General Call Support
Address Recognition Causes Wake-up When AVR is in Sleep Mode
SDA
SCL
TWI Terminology
Description
The device that initiates and terminates a transmission. The Master also generates the
SCL clock.
The device addressed by a Master.
The device placing data on the bus.
The device reading data from the bus.
“Power Reduction Register - PRR” on page 64
Device 1
Device 2
Device 3
........
Device n
V
CC
R1
must be written to zero to
R2
4921E–AUTO–09/09
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