AT90CAN128-16MI Atmel, AT90CAN128-16MI Datasheet - Page 219
![IC MCU AVR FLASH 128K 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT90CAN128-16MI
Manufacturer Part Number
AT90CAN128-16MI
Description
IC MCU AVR FLASH 128K 64-QFN
Manufacturer
Atmel
Series
AVR® 90CANr
Specifications of AT90CAN128-16MI
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
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K 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-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
For Use With
ATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90CAN128-16MI
Manufacturer:
ATMEL
Quantity:
430
Company:
Part Number:
AT90CAN128-16MI
Manufacturer:
ATMEL
Quantity:
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7679H–CAN–08/08
Figure 18-11. Data Transfer in Master Transmitter Mode
A START condition is sent by writing the following value to TWCR:
TWEN must be set to enable the Two-wire Serial Interface, TWSTA must be written to one to
transmit a START condition and TWINT must be written to one to clear the TWINT flag. The TWI
will then test the Two-wire Serial Bus and generate a START condition as soon as the bus
becomes free. After a START condition has been transmitted, the TWINT flag is set by hard-
ware, and the status code in TWSR will be 0x08 (See
SLA+W must be transmitted. This is done by writing SLA+W to TWDR. Thereafter the TWINT bit
should be cleared (by writing it to one) to continue the transfer. This is accomplished by writing
the following value to TWCR:
When SLA+W have been transmitted and an acknowledgment bit has been received, TWINT is
set again and a number of status codes in TWSR are possible. Possible status codes in Master
mode are 0x18, 0x20, or 0x38. The appropriate action to be taken for each of these status codes
is detailed in
When SLA+W has been successfully transmitted, a data packet should be transmitted. This is
done by writing the data byte to TWDR. TWDR must only be written when TWINT is high. If not,
the access will be discarded, and the Write Collision bit (TWWC) will be set in the TWCR Regis-
ter. After updating TWDR, the TWINT bit should be cleared (by writing it to one) to continue the
transfer. This is accomplished by writing the following value to TWCR:
This scheme is repeated until the last byte has been sent and the transfer is ended by generat-
ing a STOP condition or a repeated START condition. A STOP condition is generated by writing
the following value to TWCR:
A REPEATED START condition is generated by writing the following value to TWCR:
TWCR
value
TWCR
value
TWCR
value
TWCR
value
TWCR
value
SDA
SCL
TWINT
TWINT
TWINT
TWINT
TWINT
Table
1
1
1
1
1
18-3.
TRANSMITTER
Device 1
MASTER
TWEA
TWEA
TWEA
TWEA
TWEA
X
X
X
X
X
TWSTA
TWSTA
TWSTA
TWSTA
TWSTA
1
0
0
0
1
Device 2
RECEIVER
SLAVE
TWSTO
TWSTO
TWSTO
TWSTO
TWSTO
0
0
0
1
0
Device 3
TWWC
TWWC
TWWC
TWWC
TWWC
X
X
X
X
X
Table
AT90CAN32/64/128
........
TWEN
TWEN
TWEN
TWEN
TWEN
18-3). In order to enter MT mode,
1
1
1
1
1
Device n
–
0
–
0
–
0
–
0
–
0
R1
TWIE
TWIE
TWIE
TWIE
TWIE
X
X
X
X
X
V
CC
R2
219
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