AT90CAN64-16AUR Atmel, AT90CAN64-16AUR Datasheet - Page 69
AT90CAN64-16AUR
Manufacturer Part Number
AT90CAN64-16AUR
Description
MCU AVR 64K FLASH 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® 90CANr
Datasheet
1.AT90CAN32-16AUR.pdf
(428 pages)
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
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Part Number
Manufacturer
Quantity
Price
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7679H–CAN–08/08
Figure 9-3.
Consider the clock period starting shortly after the first falling edge of the system clock. The latch
is closed when the clock is low, and goes transparent when the clock is high, as indicated by the
shaded region of the “SYNC LATCH” signal. The signal value is latched when the system clock
goes low. It is clocked into the PINxn Register at the succeeding positive clock edge. As indi-
cated by the two arrows t
between ½ and 1½ system clock period depending upon the time of assertion.
When reading back a software assigned pin value, a nop instruction must be inserted as indi-
cated in
the clock. In this case, the delay t
Figure 9-4.
Figure
INSTRUCTIONS
INSTRUCTIONS
Synchronization when Reading an Externally Applied Pin value
Synchronization when Reading a Software Assigned Pin Value
SYSTEM CLK
SYNC LATCH
SYSTEM CLK
SYNC LATCH
9-4. The out instruction sets the “SYNC LATCH” signal at the positive edge of
PINxn
PINxn
r16
r17
r17
pd,max
and t
pd
through the synchronizer is 1 system clock period.
out PORTx, r16
pd,min
XXX
, a single signal transition on the pin will be delayed
t
pd, max
0x00
0x00
XXX
nop
t
pd
t
0xFF
AT90CAN32/64/128
pd, min
in r17, PINx
in r17, PINx
0xFF
0xFF
69
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