AT90CAN64 Automotive Atmel Corporation, AT90CAN64 Automotive Datasheet - Page 368
AT90CAN64 Automotive
Manufacturer Part Number
AT90CAN64 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(431 pages)
2.AT90CAN128_AUTOMOTIVE.pdf
(16 pages)
3.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
Specifications of AT90CAN64 Automotive
Flash (kbytes)
64 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
53
Ext Interrupts
8
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Can
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
8
Input Capture Channels
2
Pwm Channels
7
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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27.4
368
Maximum Speed vs. V
AT90CAN32/64/128
Table 27-1.
Maximum frequency is depending on V
vs. V
given voltage in this interval, use this equation:
To calculate required voltage for a given frequency, use this equation:
Table 27-2.
At 3 Volt, this gives:
Thus, when V
At 8 MHz this gives:
Thus, a maximum frequency of 8 MHz requires V
Symbol
1/t
t
t
t
t
t
∆
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
CC
curve is linear between 1.8V < V
2.7 < VCC < 4.5 or 8 < Frequency < 16
CC
Voltage and Frequency range
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from one clock cycle
to the next
CC
External Clock Drive
Constants used to calculate maximum speed vs. V
= 3V, maximum frequency will be 9.33 MHz.
Frequency
Voltage
Frequency
Voltage
=
=
1.8
------- -
------- -
1.8
8
=
8
=
•
a
b
•
CC
(
•
•
(
8 8
3 2.7
CC
. As shown in Figure 27-2., the Maximum Frequency
(
(
–
V Vx
F Fy
–
< 4.5V. To calculate the maximum frequency at a
–
–
)
+
)
2.7
)
)
+
CC
+
+
V
8
Min.
125
Fy
Vx
CC
50
50
= 2.7V.
=
0
=
2.7
= 2.7 - 5.5V
9.33
8/1.8
a
Max.
1.6
1.6
8
2
CC
1.8/8
b
V
Min.
62.5
CC
25
25
0
= 4.5 - 5.5V
2.7
Vx
Max.
0.5
0.5
16
7682C–AUTO–04/08
2
Units
Fy
MHz
8
ns
ns
ns
µs
µs
%
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