ATMEGA8535L-8PC Atmel, ATMEGA8535L-8PC Datasheet - Page 239
![IC AVR MCU 8K LV 8MHZ COM 40-DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
ATMEGA8535L-8PC
Manufacturer Part Number
ATMEGA8535L-8PC
Description
IC AVR MCU 8K LV 8MHZ COM 40-DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8535L-8PC
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
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 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
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Latching of Fuses
Signature Bytes
Calibration Byte
2502K–AVR–10/06
Table 99. Fuse Low Byte
Notes:
The status of the Fuse bits is not affected by Chip Erase. Note that the Fuse bits are
locked if Lock bit 1 (LB1) is programmed. Program the Fuse bits before programming
the Lock bits.
The Fuse values are latched when the device enters Programming mode and changes
of the Fuse values will have no effect until the part leaves Programming mode. This
does not apply to the EESAVE fuse which will take effect once it is programmed. The
fuses are also latched on Power-up in Normal mode.
All Atmel microcontrollers have a three-byte signature code which identifies the device.
This code can be read in both Serial and Parallel mode, also when the device is locked.
The three bytes reside in a separate address space.
For the ATmega8535 the signature bytes are:
1. 0x000: 0x1E (indicates manufactured by Atmel)
2. 0x001: 0x93 (indicates 8 KB Flash memory)
3. 0x002: 0x08 (indicates ATmega8535 device when 0x001 is 0x93)
The ATmega8535 stores four different calibration values for the internal RC Oscillator.
These bytes resides in the signature row high byte of the addresses 0x000, 0x0001,
0x0002, and 0x0003 for 1, 2, 4, and 8 MHz respectively. During Reset, the 1 MHz value
is automatically loaded into the OSCCAL Register. If other frequencies are used, the
calibration value has to be loaded manually, see “Oscillator Calibration Register – OSC-
CAL” on page 30 for details.
Fuse Low Byte
BODLEVEL
BODEN
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
1. The default value of SUT1..0 results in maximum start-up time. See Table 10 on page
2. The default setting of CKSEL3..0 results in internal RC Oscillator @ 1 MHz. See
30 for details.
Table 2 on page 25 for details.
Bit no
7
5
4
6
3
2
1
0
Description
Brown out detector trigger
level
Brown out detector enable
Select start-up time
Select start-up time
Select Clock source
Select Clock source
Select Clock source
Select Clock source
Default Value
1 (unprogrammed)
1 (unprogrammed, BOD
disabled)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
0 (programmed)
1 (unprogrammed)
ATmega8535(L)
(1)
(2)
(2)
(2)
(1)
(2)
239
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