ATMEGA32L-8MC Atmel, ATMEGA32L-8MC Datasheet - Page 267
ATMEGA32L-8MC
Manufacturer Part Number
ATMEGA32L-8MC
Description
IC AVR MCU 32K LV 8MHZ COM 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32L-8MC
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-VQFN Exposed Pad
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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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
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