AT90CAN32 Automotive Atmel Corporation, AT90CAN32 Automotive Datasheet - Page 40
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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
- AT90CAN128_AUTOMOTIVE PDF datasheet #2
- AT90CAN128_AUTOMOTIVE PDF datasheet #3
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- Download datasheet (6Mb)
5.5
40
Low-frequency Crystal Oscillator
AT90CAN32/64/128
Table 5-4.
Notes:
To use a 32.768 kHz watch crystal as the clock source for the device, the low-frequency crystal
Oscillator must be selected by setting the CKSEL Fuses to “0100”, “0101”, “0110”, or “0111”.
The crystal should be connected as shown in
Figure 5-3.
12-22 pF capacitors may be necessary if the parasitic impedance (pads, wires & PCB) is very
low.
CKSEL0
0
0
0
0
1
1
1
1
1. These options should only be used when not operating close to the maximum frequency of the
2. These options are intended for use with ceramic resonators and will ensure frequency stability
device, and only if frequency stability at start-up is not important for the application. These
options are not suitable for crystals.
at start-up. They can also be used with crystals when not operating close to the maximum fre-
quency of the device, and if frequency stability at start-up is not important for the application.
SUT1..0
Start-up Times for the Oscillator Clock Selection
Low-frequency Crystal Oscillator Connections
00
01
10
00
01
10
11
11
Start-up Time from
Power-down and
Power-save
258 CK
258 CK
1K CK
1K CK
1K CK
16K CK
16K CK
16K CK
32.768 KHz
(2)
(2)
(2)
(1)
(1)
12 - 22 pF
12 - 22 pF
Figure
Additional Delay
14 CK + 4.1 ms
14 CK + 4.1 ms
14 CK + 4.1 ms
14 CK + 65 ms
14 CK + 65 ms
14 CK + 65 ms
(V
5-3.
from Reset
CC
14 CK
14 CK
= 5.0V)
XTAL2
XTAL1
GND
Recommended Usage
Ceramic resonator, fast
rising power
Ceramic resonator, slowly
rising power
Ceramic resonator, BOD
enabled
Ceramic resonator, fast
rising power
Ceramic resonator, slowly
rising power
Crystal Oscillator, BOD
enabled
Crystal Oscillator, fast
rising power
Crystal Oscillator, slowly
rising power
7682C–AUTO–04/08
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