ATMEGA32-16PC Atmel, ATMEGA32-16PC Datasheet - Page 267

• Manufacturer Part Number: ATMEGA32-16PC
• Description: IC AVR MCU 32K 16MHZ COM 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32-16PC

• 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: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Programming the Lock
Bits
Reading the Fuse and
Lock Bits
Reading the Signature
Bytes
Reading the
Calibration Byte
2503Q–AVR–02/11
The algorithm for programming the Lock bits is as follows (refer to
page 262
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 262
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”.
Figure 132. Mapping between BS1, BS2 and the Fuse- and Lock Bits during Read
The algorithm for reading the Signature bytes is as follows (refer to
page 262
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte ($00 - $02).
3. Set OE to “0”, and BS1 to “0”. The selected Signature byte can now be read at DATA.
4. Set OE to “1”.
The algorithm for reading the Calibration byte is as follows (refer to
page 262
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte, $00.
3. Set OE to “0”, and BS1 to “1”. The Calibration byte can now be read at DATA.
4. Set OE to “1”.
read at DATA (“0” means programmed).
read at DATA (“0” means programmed).
DATA (“0” means programmed).
for details on Command and Data loading):
for details on Command and Address loading):
for details on Command and Address loading):
for details on Command loading):
Fuse High Byte
Fuse Low Byte
Lock Bits
BS2
0
1
BS1
0
1
“Programming the Flash” on
“Programming the Flash” on
“Programming the Flash” on
ATmega32(L)
“Programming the Flash”
DATA
267