AT90CAN128-16AI Atmel, AT90CAN128-16AI Datasheet - Page 368

• Manufacturer Part Number: AT90CAN128-16AI
• Description: IC MCU AVR FLASH 128K 64TQFP
• Manufacturer: Atmel
• Series: AVR® 90CANr

Specifications of AT90CAN128-16AI

• 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-TQFP, 64-VQFP
• For Use With: ATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

26.4
368
Maximum Speed vs. V
AT90CAN32/64/128
Table 26-1.
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 26-2.
At 3 Volt, this gives:
Thus, when V
At 8 MHz this gives:
Thus, a maximum frequency of 8 MHz requires V
Figure 26-2. Maximum Frequency vs. V
Symbol
t
t
t
Δ
CLCX
CLCH
CHCL
t
CLCL
CC
curve is linear between 1.8V < V
2.7 < VCC < 4.5 or 8 < Frequency < 16
CC
Voltage and Frequency range
Parameter
Low Time
Rise Time
Fall Time
Change in period from one clock cycle
to the next
16 MHz
CC
External Clock Drive (Continued)
Constants used to calculate maximum speed vs. V
8 MHz
= 3V, maximum frequency will be 9.33 MHz.
Frequency
Voltage
Frequency
Frequency
2.7V
Voltage
=
=
1.8
------- -
------- -
1.8
8
=
8
=
•
a
b
•
CC
(
Safe Operating Area
•
•
(
8 8
CC
3 2.7
CC
. As shown in Figure 26-2., the Maximum Frequency
(
(
–
V Vx
F Fy
–
, AT90CAN32/64/128
< 4.5V. To calculate the maximum frequency at a
–
–
)
+
)
2.7
)
)
+
CC
+
+
V
8
Min.
4.5V
Fy
Vx
CC
50
= 2.7V.
=
=
2.7
= 2.7 - 5.5V
9.33
8/1.8
a
Max.
1.6
1.6
2
5.5V
CC
1.8/8
b
V
Min.
CC
25
= 4.5 - 5.5V
Voltage
2.7
Vx
Max.
0.5
0.5
2
7679H–CAN–08/08
Units
Fy
8
ns
μs
μs
%