AT90CAN128-16MJ Atmel, AT90CAN128-16MJ Datasheet - Page 253
![IC MCU AVR FLASH 128K 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT90CAN128-16MJ
Manufacturer Part Number
AT90CAN128-16MJ
Description
IC MCU AVR FLASH 128K 64-QFN
Manufacturer
Atmel
Series
AVR® 90CANr
Specifications of AT90CAN128-16MJ
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
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19.10.2
7679H–CAN–08/08
CAN General Status Register - CANGSTA
• Bit 0 – SWRES: Software Reset Request
This auto resettable bit only resets the CAN controller.
• Bit 7 – Reserved Bit
This bit is reserved for future use.
• Bit 6 – OVRG: Overload Frame Flag
This flag does not generate an interrupt.
• Bit 5 – Reserved Bit
This bit is reserved for future use.
• Bit 4 – TXBSY: Transmitter Busy
This flag does not generate an interrupt.
• Bit 3 – RXBSY: Receiver Busy
This flag does not generate an interrupt.
• Bit 2 – ENFG: Enable Flag
Initial Value
Read/Write
Bit
– 0 - standby mode: The on-going transmission (if exists) is normally terminated and the
– 1 - enable mode: The CAN channel enters in enable mode once 11 recessive bits
– 0 - no reset
– 1 - reset: this reset is “ORed” with the hardware reset.
– 0 - no overload frame.
– 1 - overload frame: set by hardware as long as the produced overload frame is sent.
– 0 - transmitter not busy.
– 1 - transmitter busy: set by hardware as long as a frame (data, remote, overload or
– 0 - receiver not busy
– 1 - receiver busy: set by hardware as long as a frame is received or monitored.
CAN channel is frozen (the CONMOB bits of every MOb do not change). The transmitter
constantly provides a recessive level. In this mode, the receiver is not enabled but all the
registers and mailbox remain accessible from CPU.
has been read.
error frame) or an ACK field is sent. Also set when an inter frame space is sent.
Note:
7
-
-
-
A standby mode applied during a reception may corrupt the on-going reception or set the
controller in a wrong state. The controller will restart correctly from this state if a software
reset (SWRES) is applied. If no reset is considered, a possible solution is to wait for a
lake of a receiver busy (RXBSY) before to enter in stand-by mode. The best solution is
first to apply an abort request command (ABRQ) and then wait for the lake of the receiver
busy (RXBSY) before to enter in stand-by mode. In any cases, this standby mode behav-
ior has no effect on the CAN bus integrity.
OVRG
R
6
0
5
-
-
-
TXBSY
4
R
0
RXBSY
R
3
0
ENFG
R
2
0
AT90CAN32/64/128
BOFF
R
1
0
ERRP
R
0
0
CANGSTA
253
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