ATmega16A Atmel Corporation, ATmega16A Datasheet - Page 278

• Manufacturer Part Number: ATmega16A
• Manufacturer: Atmel Corporation

Specifications of ATmega16A

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• 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: No
• 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: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26.8.4
26.8.5
Table 26-13. Serial Programming Instruction Set (Hexadecimal values)
278
Instruction
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
ATmega16A
Data Polling EEPROM
Serial Programming Instruction set
(1)
/Operation
When a new byte has been written and is being programmed into EEPROM, reading the
address location being programmed will give the value $FF. At the time the device is ready for a
new byte, the programmed value will read correctly. This is used to determine when the next
byte can be written. This will not work for the value $FF, but the user should have the following in
mind: As a chip erased device contains $FF in all locations, programming of addresses that are
meant to contain $FF, can be skipped. This does not apply if the EEPROM is re-programmed
without chip erasing the device. In this case, data polling cannot be used for the value $FF, and
the user will have to wait at least t
for t
Table 26-12. Minimum Wait Delay before Writing the Next Flash or EEPROM Location
Table 26-13 on page 278
(1)
Symbol
t
t
t
t
WD_FUSE
WD_FLASH
WD_EEPROM
WD_ERASE
WD_EEPROM
value.
(1)
and
Byte 1
$AC
$AC
$4D
$C1
$F0
$A0
$48
$40
$28
$20
$58
$30
$50
$58
$50
Figure 26-8 on page 280
WD_EEPROM
Minimum Wait Delay
4.5 ms
4.5 ms
9.0 ms
9.0 ms
before programming the next byte. See
adr MSB
adr MSB
adr MSB
adr MSB
adr MSB
Byte 2
$53
$80
$00
$00
$00
$00
$00
$00
$08
$08
Instruction Format
describes the Instruction set.
Extended adr
0000 000aa
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
Byte 3
$00
$00
$00
$00
$00
$00
$00
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
8154B–AVR–07/09
Table 26-12
Byte4
$00
$00
$00