AT90CAN64-16AUR Atmel, AT90CAN64-16AUR Datasheet - Page 54

• 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

7.1.5
54
AT90CAN32/64/128
Brown-out Detection
Figure 7-4.
AT90CAN32/64/128 has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
level during operation by comparing it to a fixed trigger level. The trigger level for the BOD can
be selected by the BODLEVEL Fuses. The trigger level has a hysteresis to ensure spike free
Brown-out Detection. The hysteresis on the detection level should be interpreted as V
V
Table 7-2.
Note:
Table 7-3.
When the BOD is enabled, and V
7-5), the Brown-out Reset is immediately activated. When V
Symbol
V
t
BOT
BOD
HYST
+ V
BODLEVEL 2..0 Fuses
1. V
HYST
this is the case, the device is tested down to V
antees that a Brown-Out Reset will occur before V
operation of the microcontroller is no longer guaranteed. The test is performed using
BODLEVEL = 010 for Low Operating Voltage and BODLEVEL = 101 for High Operating Volt-
age .
BOT
/2 and V
External Reset During Operation
BODLEVEL Fuse Coding
Brown-out Characteristics
Parameter
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
CC
101
100
010
001
000
may be below nominal minimum operating voltage for some devices. For devices where
111
110
011
BOT-
= V
BOT
- V
CC
HYST
decreases to a value below the trigger level (V
Min V
(1)
/2.
BOT
CC
= V
Typ V
CC
Min.
4.1
4.0
3.9
3.8
2.7
2.6
2.5
BOT
drops to a voltage where correct
BOD Disabled
CC
BOT
during the production test. This guar-
increases above the trigger level
Typ.
70
2
Max V
Max.
BOT
7679H–CAN–08/08
BOT-
in
Units
Units
mV
BOT+
Figure
V
V
V
V
V
V
V
µs
CC
=