ATMEGA165-16AU Atmel, ATMEGA165-16AU Datasheet - Page 256
ATMEGA165-16AU
Manufacturer Part Number
ATMEGA165-16AU
Description
IC AVR MCU 16K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165-16AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
Quantity
Price
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Programming the Fuse Low
Bits
Programming the Fuse High
Bits
Programming the Extended
Fuse Bits
Programming the Lock Bits
2573G–AVR–07/09
The algorithm for programming the Fuse Low bits is as follows (refer to “Programming
the Flash” on page 252 for details on Command and Data loading):
1. A: Load Command “0100 0000”.
2. C: Load Data Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3. Give WR a negative pulse and wait for RDY/BSY to go high.
The algorithm for programming the Fuse High bits is as follows (refer to “Programming
the Flash” on page 252 for details on Command and Data loading):
1. A: Load Command “0100 0000”.
2. C: Load Data 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 fuse 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.
The algorithm for programming the Extended Fuse bits is as follows (refer to “Program-
ming the Flash” on page 252 for details on Command and Data loading):
1. 1. A: Load Command “0100 0000”.
2. 2. C: Load Data Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3. 3. Set BS1 to “0” and BS2 to “1”. This selects extended fuse byte.
4. 4. Give WR a negative pulse and wait for RDY/BSY to go high.
5. 5. Set BS2 to “0”. This selects low data byte.
Figure 115. Programming the FUSES Waveforms
The algorithm for programming the Lock bits is as follows (refer to “Programming the
Flash” on page 252 for details on Command and Data loading):
1. A: Load Command “0010 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs the Lock bit. If LB mode 3 is pro-
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.
RESET +12V
RDY/BSY
grammed (LB1 and LB2 is programmed), it is not possible to program the Boot
Lock bits by any External Programming mode.
PAGEL
XTAL1
DATA
BS2
XA1
XA0
BS1
WR
OE
0x40
A
DATA
C
Write Fuse Low byte
XX
0x40
A
DATA
C
Write Fuse high byte
XX
ATmega165/V
0x40
A
DATA
C
Write Extended Fuse byte
XX
256
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