AT90CAN32 Atmel Corporation, AT90CAN32 Datasheet - Page 71
AT90CAN32
Manufacturer Part Number
AT90CAN32
Description
Manufacturer
Atmel Corporation
Specifications of AT90CAN32
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 85
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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9.2.6
9.3
7679H–CAN–08/08
Alternate Port Functions
Unconnected Pins
above mentioned sleep modes, as the clamping in these sleep modes produces the requested
logic change.
If some pins are unused, it is recommended to ensure that these pins have a defined level. Even
though most of the digital inputs are disabled in the deep sleep modes as described above, float-
ing inputs should be avoided to reduce current consumption in all other modes where the digital
inputs are enabled (Reset, Active mode and Idle mode). The simplest method to ensure a
defined level of an unused pin, is to enable the internal pull-up. In this case, the pull-up will be
disabled during reset. If low power consumption during reset is important, it is recommended to
use an external pull-up or pull-down. Connecting unused pins directly to V
ommended, since this may cause excessive currents if the pin is accidentally configured as an
output.
Most port pins have alternate functions in addition to being general digital I/Os.
how the port pin control signals from the simplified
functions. The overriding signals may not be present in all port pins, but the figure serves as a
generic description applicable to all port pins in the AVR microcontroller family.
Figure 9-2
AT90CAN32/64/128
can be overridden by alternate
CC
or GND is not rec-
Figure 9-5
shows
71
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