AT90CAN64 Automotive Atmel Corporation, AT90CAN64 Automotive Datasheet - Page 305
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AT90CAN64 Automotive
Manufacturer Part Number
AT90CAN64 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 AT90CAN64 Automotive
Flash (kbytes)
64 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)
4
Eeprom (bytes)
2048
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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23.6.2
7682C–AUTO–04/08
Boundary-scan and the Two-wire Interface
Figure 23-4. General Port Pin Schematic Diagram
The two Two-wire Interface pins SCL and SDA have one additional control signal in the scan-
chain; Two-wire Interface Enable – TWIEN. As shown in
a tri-state buffer with slew-rate control in parallel with the ordinary digital port pins. A general
scan cell as shown in
Notes:
1. A separate scan chain for the 50 ns spike filter on the input is not provided. The ordinary scan
2. Make sure the OC and TWIEN signals are not asserted simultaneously, as this will lead to
support for digital port pins suffice for connectivity tests. The only reason for having TWIEN in
the scan path, is to be able to disconnect the slew-rate control buffer when doing boundary-
scan.
drive contention.
See Boundary-scan
Description for Details!
Pxn
Figure 23-9
PUD:
PUExn:
OCxn:
ODxn:
IDxn:
SLEEP:
IDxn
is attached to the TWIEN signal.
PULLUP DISABLE
PULLUP ENABLE for pin Pxn
OUTPUT CONTROL for pin Pxn
OUTPUT DATA to pin Pxn
INPUT DATA from pin Pxn
SLEEP CONTROL
PUExn
SLEEP
OCxn
ODxn
Figure
SYNCHRONIZER
WDx:
RDx:
WPx:
RRx:
RPx:
CLK
D
L
AT90CAN32/64/128
Q
Q
I/O
23-5, the TWIEN signal enables
:I/O CLOCK
D
WRITE DDRx
READ DDRx
WRITE PORTx
READ PORTx REGISTER
READ PORTx PIN
PINxn
Q
Q
RESET
RESET
Q
Q
Q
Q
PORTxn
DDxn
CLR
CLR
D
D
CLK
PUD
WDx
RDx
WPx
RRx
RPx
I/O
305
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