AT90CAN64-16AUR Atmel, AT90CAN64-16AUR Datasheet - Page 419

• Manufacturer Part Number: AT90CAN64-16AUR
• Description: MCU AVR 64K FLASH 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® 90CANr

Specifications of AT90CAN64-16AUR

• 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: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K 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-TQFP, 64-VQFP
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7679H–CAN–08/08
4. Reset of Timer-2 flags in asynchronous mode
3. Miss-functioning when code stack is in XRAM
2. Extra consumption in power reduction modes
1. Power supply current in Power-down mode
In asynchronous mode, a writing in any register of the TIMER-2 (TCCR2A, TCNT2 &
OCR2A) automatically clears TOV2 and OCF2A flags in TFIR register.
Problem fix / workaround
– TOV2: Do not write in Timer-2 registers if TCNT2 is equal to 0xFF, 0x00 or 0x01.
– OCF2A: Do not write in Timer-2 registers if TCNT2 and OCR2A differ from -1, 0 or 1.
If the stack pointer (SP) targets the XRAM and if the execution of an instruction is split to
serve a rising interrupt, the last operation of this instruction, executed after pushing out the
return address from XRAM, may be disturbed providing wrong data to the system.
Example: - the “OUT” instruction can be executed twice
Problem fix / workaround
Map the code stack in internal SRAM.
When AVCC is selected as voltage reference for ADC (REF[1,0]=0,1), an extra consumption
close to 30 µA (5.0V/25°C) appears in power reduction modes.
Problem fix / workaround
Switch from AVCC to AREF pin (REF[1,0]=0,0) before enabling one of the power reduction
modes.
The power supply current in Power-down mode of AT90CAN128 parts with lot number
before A04900 is:
T
Symbol
A
= - 40°C to + 85°C
I
CC
- the “MOV” instruction can update a register with un-predictable data.
Power Supply Current
Power-down Mode
Parameter
WDT disabled, V
WDT disabled, V
WDT enabled, V
WDT enabled, V
Condition
CC
CC
CC
CC
= 5 V
= 3 V
= 5 V
= 3 V
AT90CAN32/64/128
Min.
Typ.
Max.
150
120
50
40
Max.
µA
µA
µA
µA
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