ATmega328P Automotive Atmel Corporation, ATmega328P Automotive Datasheet - Page 292

• Manufacturer Part Number: ATmega328P Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega328P Automotive

• Flash (kbytes): 32 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 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: Yes
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• 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: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

27.7
27.7.1
292
Parallel Programming
ATmega328P [Preliminary]
Enter Programming Mode
Table 27-14. Command Byte Bit Coding
The following algorithm puts the device in Parallel (High-voltage) Programming mode:
1. Set Prog_enable pins listed in
2. Apply 4.5 - 5.5V between V
Ensure that V
3. Wait 20 - 60 µs, and apply 11.5 - 12.5V to RESET.
4. Keep the Prog_enable pins unchanged for at least 10µs after the High-voltage has been
5. Wait at least 300 µs before giving any parallel programming commands.
6. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
If the rise time of the V
tive algorithm can be used.
1. Set Prog_enable pins listed in
2. Apply 4.5 - 5.5V between V
3. Monitor V
4. Keep the Prog_enable pins unchanged for at least 10µs after the High-voltage has been
5. Wait until V
6. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
Command Byte
V
applied to ensure the Prog_enable Signature has been latched.
V
applied to ensure the Prog_enable Signature has been latched.
commands.
CC
CC
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
to 0V.
to 0V.
CC
CC
CC
, and as soon as V
reaches at least àpçV within the next 20 µs.
actually reaches 4.5 -5.5V before giving any parallel programming
Command Executed
Chip Erase
Write Fuse bits
Write Lock bits
Write Flash
Write EEPROM
Read Signature Bytes and Calibration byte
Read Fuse and Lock bits
Read Flash
Read EEPROM
CC
is unable to fulfill the requirements listed above, the following alterna-
CC
CC
Table 27-12 on page 291
and GND.
Table 27-12 on page 291
and GND.
CC
reaches 0.9 - 1.1V, apply 11.5 - 12.5V to RESET.
to “0000”, RESET pin to 0V and
to “0000”, RESET pin to 0V and
7810A–AVR–11/09