AT90CAN32 Automotive Atmel Corporation, AT90CAN32 Automotive Datasheet - Page 55
AT90CAN32 Automotive
Manufacturer Part Number
AT90CAN32 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 AT90CAN32 Automotive
Flash (kbytes)
32 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)
2
Eeprom (bytes)
1024
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
- AT90CAN128_AUTOMOTIVE PDF datasheet
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- AT90CAN128_AUTOMOTIVE PDF datasheet #3
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7.1.6
7.1.7
7682C–AUTO–04/08
Watchdog Reset
MCU Status Register – MCUSR
When the BOD is enabled, and V
7-5), the Brown-out Reset is immediately activated. When V
(V
expired.
The BOD circuit will only detect a drop in V
longer than t
Figure 7-5.
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
page 57
Figure 7-6.
The MCU Status Register provides information on which reset source caused an MCU reset.
Bit
Read/Write
Initial Value
BOT+
in
for details on operation of the Watchdog Timer.
Figure
BOD
Brown-out Reset During Operation
Watchdog Reset During Operation
CC
R
7
–
0
given in
INTERNAL
TIME-OUT
7-5), the delay counter starts the MCU after the Time-out period t
RESET
RESET
V
CC
R
6
–
0
Table
7-1.
R
5
–
0
CC
decreases to a value below the trigger level (V
JTRF
R/W
4
V
CK
BOT-
CC
WDRF
if the voltage stays below the trigger level for
R/W
3
See Bit Description
BORF
R/W
2
AT90CAN32/64/128
CC
increases above the trigger level
EXTRF
R/W
1
V
t
TOUT
BOT+
PORF
R/W
0
MCUSR
TOUT
BOT-
. Refer to
TOUT
in
Figure
has
55
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