AT90CAN32 Atmel Corporation, AT90CAN32 Datasheet - Page 339
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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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25.3
25.4
25.5
25.5.1
7679H–CAN–08/08
Signature Bytes
Calibration Byte
Parallel Programming Overview
Signal Names
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and parallel mode, also when the device is locked. The three
bytes reside in a separate address space.
Table 25-6.
The AT90CAN32/64/128 has a byte calibration value for the internal RC Oscillator. This byte
resides in the high byte of address 0x000 in the signature address space. During reset, this byte
is automatically written into the OSCCAL Register to ensure correct frequency of the calibrated
RC Oscillator.
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the AT90CAN32/64/128. Pulses are assumed
to be at least 250 ns unless otherwise noted.
In this section, some pins of the AT90CAN32/64/128 are referenced by signal names describing
their functionality during parallel programming, see
described in the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Device
AT90CAN32
AT90CAN64
AT90CAN128
Signature Bytes
Address
0
1
2
0
1
2
0
1
2
Table
Table
25-10.
25-9.
Value
0x1E
0x95
0x81
0x1E
0x96
0x81
0x1E
0x97
0x81
Signature Byte Description
Indicates manufactured by Atmel
Indicates 32 KB Flash memory
Indicates AT90CAN32 device when address 1 contains 0x95
Indicates manufactured by Atmel
Indicates 64 KB Flash memory
Indicates AT90CAN64 device when address 1 contains 0x96
Indicates manufactured by Atmel
Indicates 128 KB Flash memory
Indicates AT90CAN128 device when address 1 contains 0x97
Figure 25-1
AT90CAN32/64/128
and
Table
25-7. Pins not
339
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