ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 314

• Manufacturer Part Number: ATmega168A
• Manufacturer: Atmel Corporation

Specifications of ATmega168A

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 20 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): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 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

28.8.3
Table 28-19. Serial Programming Instruction Set (Hexadecimal values)
8271D–AVR–05/11
Instruction/Operation
Programming Enable
Chip Erase (Program Memory/EEPROM)
Poll RDY/BSY
Load Instructions
Load Extended Address byte
Load Program Memory Page, High byte
Load Program Memory Page, Low byte
Load EEPROM Memory Page (page access)
Read Instructions
Read Program Memory, High byte
Read Program Memory, Low byte
Read EEPROM Memory
Read Lock bits
Read Signature Byte
Read Fuse bits
Read Fuse High bits
Read Extended Fuse Bits
Serial Programming Instruction set
6. Any memory location can be verified by using the Read instruction which returns the con-
7. At the end of the programming session, RESET can be set high to commence normal
8. Power-off sequence (if needed):
Table 28-18. Typical Wait Delay Before Writing the Next Flash or EEPROM Location
Table 28-19 on page 314
(1)
Symbol
t
t
t
WD_FLASH
WD_EEPROM
WD_ERASE
not used, the used must wait at least t
28-18). In a chip erased device, no 0xFF in the data file(s) need to be programmed.
tent at the selected address at serial output MISO.
operation.
Set RESET to “1”.
Turn V
CC
power off.
ATmega48A/PA/88A/PA/168A/PA/328/P
Byte 1
$AC
$AC
$4D
$C1
$A0
$F0
$48
$40
$28
$20
$58
$30
$50
$58
$50
and
Figure 28-8 on page 316
0000 00aa
WD_EEPROM
adr MSB
adr MSB
Byte 2
$53
$80
$00
$00
$00
$00
$00
$00
$00
$00
$08
$08
Instruction Format
before issuing the next byte (See
describes the Instruction set.
Extended adr
0000 000aa
0000 000aa
aaaa aaaa
Minimum Wait Delay
adr LSB
adr LSB
adr LSB
adr LSB
Byte 3
$00
$00
$00
$00
$00
$00
$00
4.5ms
3.6ms
9.0ms
high data byte out
low data byte out
high data byte in
low data byte in
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte in
Byte4
$00
$00
$00
Table
314