ATMEGA16-16AQ Atmel, ATMEGA16-16AQ Datasheet - Page 270

• Manufacturer Part Number: ATMEGA16-16AQ
• Description: MCU AVR 16K FLASH 16MHZ 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16-16AQ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Programming the
Fuse High Bits
Programming the Lock
Bits
Reading the Fuse and
Lock Bits
2466T–AVR–07/10
The algorithm for programming the Fuse high bits is as follows (refer to
on page 266
1. A: Load Command “0100 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3. Set BS1 to “1” and BS2 to “0”. This selects high data byte.
4. Give WR a negative pulse and wait for RDY/BSY to go high.
5. Set BS1 to “0”. This selects low data byte.
Figure 131. Programming the Fuses
The algorithm for programming the Lock bits is as follows (refer to
page 266
1. A: Load Command “0010 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs the Lock bit.
3. Give WR a negative pulse and wait for RDY/BSY to go high.
The Lock bits can only be cleared by executing Chip Erase.
The algorithm for reading the Fuse and Lock bits is as follows (refer to
on page 266
1. A: Load Command “0000 0100”.
2. Set OE to “0”, BS2 to “0” and BS1 to “0”. The status of the Fuse Low bits can now be
3. Set OE to “0”, BS2 to “1” and BS1 to “1”. The status of the Fuse High bits can now be
4. Set OE to “0”, BS2 to “0” and BS1 to “1”. The status of the Lock bits can now be read at
5. Set OE to “1”.
read at DATA (“0” means programmed).
read at DATA (“0” means programmed).
DATA (“0” means programmed).
RESET +12V
for details on Command and Data loading):
RDY/BSY
for details on Command and Data loading):
for details on Command loading):
PAGEL
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
$40
A
DATA
C
Write Fuse Low byte
XX
$40
A
DATA
C
“Programming the Flash” on
ATmega16(L)
Write Fuse high byte
“Programming the Flash”
“Programming the Flash”
XX
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