ATmega168P

Manufacturer Part NumberATmega168P
ManufacturerAtmel Corporation
ATmega168P datasheets
 


Specifications of ATmega168P

Flash (kbytes)16 KbytesPin Count32
Max. Operating Frequency20 MHzCpu8-bit AVR
# Of Touch Channels16Hardware Qtouch AcquisitionNo
Max I/o Pins23Ext Interrupts24
Usb SpeedNoUsb InterfaceNo
Spi2Twi (i2c)1
Uart1Graphic LcdNo
Video DecoderNoCamera InterfaceNo
Adc Channels8Adc Resolution (bits)10
Adc Speed (ksps)15Analog Comparators1
Resistive Touch ScreenNoTemp. SensorYes
Crypto EngineNoSram (kbytes)1
Eeprom (bytes)512Self Program MemoryYES
Dram MemoryNoNand InterfaceNo
PicopowerYesTemp. Range (deg C)-40 to 85
I/o Supply Class1.8 to 5.5Operating Voltage (vcc)1.8 to 5.5
FpuNoMpu / Mmuno / no
Timers3Output Compare Channels6
Input Capture Channels1Pwm Channels6
32khz RtcYesCalibrated Rc OscillatorYes
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Table 28-13. XA1 and XA0 Coding
XA1
0
0
1
1
Table 28-14. Command Byte Bit Coding
Command Byte
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
28.7
Parallel Programming
28.7.1
Enter Programming Mode
The following algorithm puts the device in Parallel (High-voltage) Programming mode:
1. Set Prog_enable pins listed in
V
CC
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
applied to ensure the Prog_enable Signature has been latched.
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
V
CC
2. Apply 4.5 - 5.5V between V
3. Monitor V
8025M–AVR–6/11
XA0
Action when XTAL1 is Pulsed
0
Load Flash or EEPROM Address (High or low address byte determined by BS1).
1
Load Data (High or Low data byte for Flash determined by BS1).
0
Load Command
1
No Action, Idle
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
Table 28-12 on page 296
to 0V.
and GND.
CC
reaches at least 1.8V within the next 20 µs.
CC
is unable to fulfill the requirements listed above, the following alterna-
CC
Table 28-12 on page 296
to 0V.
and GND.
CC
, and as soon as V
reaches 0.9 - 1.1V, apply 11.5 - 12.5V to RESET.
CC
CC
ATmega48P/88P/168P
to “0000”, RESET pin to 0V and
to “0000”, RESET pin to 0V and
297