ATMEGA8535L-8JI Atmel, ATMEGA8535L-8JI Datasheet - Page 98
![IC AVR MCU 8K LV 8MHZ IND 44PLCC](/photos/6/70/67043/453-44-plcc_sml.jpg)
ATMEGA8535L-8JI
Manufacturer Part Number
ATMEGA8535L-8JI
Description
IC AVR MCU 8K LV 8MHZ IND 44PLCC
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8535L-8JI
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
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA8535L-8JI
Manufacturer:
TI
Quantity:
5 000
Part Number:
ATMEGA8535L-8JI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Output Compare Units
98
ATmega8535(L)
measuring frequency only, the clearing of the ICF1 Flag is not required (if an interrupt
handler is used).
The 16-bit comparator continuously compares TCNT1 with the Output Compare Regis-
ter (OCR1x). If TCNT equals OCR1x the comparator signals a match. A match will set
the Output Compare Flag (OCF1x) at the next timer clock cycle. If enabled (OCIE1x =
1), the Output Compare Flag generates an output compare interrupt. The OCF1x Flag is
automatically cleared when the interrupt is executed. Alternatively the OCF1x Flag can
be cleared by software by writing a logical one to its I/O bit location. The Waveform Gen-
erator uses the match signal to generate an output according to operating mode set by
the Waveform Generation mode (WGM13:0) bits and Compare Output mode
(COM1x1:0) bits. The TOP and BOTTOM signals are used by the Waveform Generator
for handling the special cases of the extreme values in some modes of operation. (See
“Modes of Operation” on page 101.)
A special feature of output compare unit A allows it to define the Timer/Counter TOP
value (i.e., counter resolution). In addition to the counter resolution, the TOP value
defines the period time for waveforms generated by the Waveform Generator.
Figure 43 shows a block diagram of the output compare unit. The small “n” in the regis-
ter and bit names indicates the device number (n = 1 for Timer/Counter1), and the “x”
indicates output compare unit (A/B). The elements of the block diagram that are not
directly a part of the output compare unit are gray shaded.
Figure 43. Output Compare Unit, Block Diagram
The OCR1x Register is double buffered when using any of the twelve Pulse Width Mod-
ulation (PWM) modes. For the Normal and Clear Timer on Compare (CTC) modes of
operation, the double buffering is disabled. The double buffering synchronizes the
update of the OCR1x Compare Register to either TOP or BOTTOM of the counting
OCRnxH Buf. (8-bit)
OCRnxH (8-bit)
BOTTOM
OCRnx Buffer (16-bit Register)
TEMP (8-bit)
TOP
OCRnx (16-bit Register)
OCRnxL Buf. (8-bit)
OCRnxL (8-bit)
DATA BUS
Waveform Generator
WGMn3:0
=
(16-bit Comparator )
(8-bit)
COMnx1:0
TCNTnH (8-bit)
OCFnx (Int.Req.)
TCNTn (16-bit Counter)
TCNTnL (8-bit)
2502K–AVR–10/06
OCnx
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