ATMEGA8535-16PJ Atmel, ATMEGA8535-16PJ Datasheet - Page 23
ATMEGA8535-16PJ
Manufacturer Part Number
ATMEGA8535-16PJ
Description
IC MCU AVR 8K 5V 16MHZ 40-DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8535-16PJ
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
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 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
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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I/O Memory
2502K–AVR–10/06
E E P R O M d a t a c o r r u p t i o n c a n e a s i l y b e a v o i d e d b y f o l l o w i n g t h i s d e s i g n
recommendation:
The I/O space definition of the ATmega8535 is shown in page 299.
All ATmega8535 I/Os and peripherals are placed in the I/O space. The I/O locations are
accessed by the IN and OUT instructions, transferring data between the 32 general pur-
pose working registers and the I/O space. I/O Registers within the address range 0x00 -
0x1F are directly bit-accessible using the SBI and CBI instructions. In these registers,
the value of single bits can be checked by using the SBIS and SBIC instructions. Refer
to the instruction set section for more details. When using the I/O specific commands IN
and OUT, the I/O addresses 0x00 - 0x3F must be used. When addressing I/O Registers
as data space using LD and ST instructions, 0x20 must be added to these addresses.
For compatibility with future devices, reserved bits should be written to zero if accessed.
Reserved I/O memory addresses should never be written.
Some of the status flags are cleared by writing a logical one to them. Note that the CBI
and SBI instructions will operate on all bits in the I/O Register, writing a one back into
any flag read as set, thus clearing the flag. The CBI and SBI instructions work with reg-
isters 0x00 to 0x1F only.
The I/O and peripherals control registers are explained in later sections.
Keep the AVR RESET active (low) during periods of insufficient power supply volt-
age. This can be done by enabling the internal Brown-out Detector (BOD). If the
detection level of the internal BOD does not match the needed detection level, an
external low V
operation is in progress, the write operation will be completed provided that the
power supply voltage is sufficient.
CC
Reset Protection circuit can be used. If a reset occurs while a write
ATmega8535(L)
23
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