AT90CAN32 Automotive Atmel Corporation, AT90CAN32 Automotive Datasheet - Page 342
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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
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AT90CAN32/64/128
B: Load Address Low byte
C: Load Data Low Byte
D: Load Data High Byte
E: Latch Data
F: Repeat B through E until the entire buffer is filled or until all data within the page is loaded.
G: Load Address High byte
H: Program Page
I: Repeat B through H until the entire Flash is programmed or until all data has been
J: End Page Programming
1. Set XA1, XA0 to “10”. This enables command loading.
2. Set BS1 to “0”.
3. Set DATA to “0001 0000”. This is the command for Write Flash.
4. Give XTAL1 a positive pulse. This loads the command.
1. Set XA1, XA0 to “00”. This enables address loading.
2. Set BS1 to “0”. This selects low address.
3. Set DATA = Address low byte (0x00 - 0xFF).
4. Give XTAL1 a positive pulse. This loads the address low byte.
1. Set XA1, XA0 to “01”. This enables data loading.
2. Set DATA = Data low byte (0x00 - 0xFF).
3. Give XTAL1 a positive pulse. This loads the data byte.
1. Set BS1 to “1”. This selects high data byte.
2. Set XA1, XA0 to “01”. This enables data loading.
3. Set DATA = Data high byte (0x00 - 0xFF).
4. Give XTAL1 a positive pulse. This loads the data byte.
1. Set BS1 to “1”. This selects high data byte.
2. Give PAGEL a positive pulse. This latches the data bytes. (See
1. Set XA1, XA0 to “00”. This enables address loading.
2. Set BS1 to “1”. This selects high address.
3. Set DATA = Address high byte (0x00 - 0xFF).
4. Give XTAL1 a positive pulse. This loads the address high byte.
1. Give WR a negative pulse. This starts programming of the entire page of data.
2. Wait until RDY/BSY goes high (See
While the lower bits in the address are mapped to words within the page, the higher bits
address the pages within the FLASH. This is illustrated in
if less than eight bits are required to address words in the page (pagesize < 256), the most
significant bit(s) in the address low byte are used to address the page when performing a
Page Write.
programmed.
waveforms)
RDY/BSY goes low.
Figure 25-3
for signal waveforms).
Figure 25-2 on page
Figure 25-3
7682C–AUTO–04/08
for signal
343. Note that
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