AT90CAN32-16AUR Atmel, AT90CAN32-16AUR Datasheet - Page 209
AT90CAN32-16AUR
Manufacturer Part Number
AT90CAN32-16AUR
Description
MCU AVR 32K FLASH 16MHZ 64-TQFP
Manufacturer
Atmel
Series
AVR® 90CANr
Specifications of AT90CAN32-16AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Data Bus Width
8 bit
Mounting Style
SMD/SMT
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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18.5
7679H–CAN–08/08
Overview of the TWI Module
Figure 18-8. Arbitration Between two Masters
Note that arbitration is not allowed between:
It is the user software’s responsibility to ensure that these illegal arbitration conditions never
occur. This implies that in multi-master systems, all data transfers must use the same composi-
tion of SLA+R/W and data packets. In other words: All transmissions must contain the same
number of data packets, otherwise the result of the arbitration is undefined.
The TWI module is comprised of several submodules, as shown in
drawn in a thick line are accessible through the AVR data bus.
• A REPEATED START condition and a data bit
• A STOP condition and a data bit
• A REPEATED START and a STOP condition
Synchronized
SCL Line
SDA from
SDA from
Master A
Master B
SDA Line
START
AT90CAN32/64/128
Arbitration, SDA
Master A loses
Figure
A
18-9. All registers
SDA
209
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