AT90LS8535-4PC Atmel, AT90LS8535-4PC Datasheet - Page 32
AT90LS8535-4PC
Manufacturer Part Number
AT90LS8535-4PC
Description
IC MCU 8K FLSH 4MHZ A/D LV 40DIP
Manufacturer
Atmel
Series
AVR® 90LSr
Specifications of AT90LS8535-4PC
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
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 ~ 6 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90LS8535-4PC
Manufacturer:
NS
Quantity:
6 229
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Timer/Counters
Timer/Counter
Prescalers
32
AT90S/LS8535
The AT90S8535 provides three general-purpose Timer/Counters – two 8-bit T/Cs and
one 16-bit T/C. Timer/Counter2 can optionally be asynchronously clocked from an exter-
nal oscillator. This oscillator is optimized for use with a 32.768 kHz watch crystal,
enabling use of Timer/Counter2 as a Real-time Clock (RTC). Timer/Counters 0 and 1
have individual prescaling selection from the same 10-bit prescaling timer.
Timer/Counter2 has its own prescaler. These Timer/Counters can either be used as a
timer with an internal clock time base or as a counter with an external pin connection
that triggers the counting.
Figure 28. Prescaler for Timer/Counter0 and 1
For Timer/Counters 0 and 1, the four different prescaled selections are: CK/8, CK/64,
CK/256 and CK/1024, where CK is the oscillator clock. For the two Timer/Counters 0
and 1, CK, external source and stop can also be selected as clock sources.
Figure 29. Timer/Counter2 Prescaler
TOSC1
CS20
CS21
CS22
AS2
CK
PCK2
TCK1
TIMER/COUNTER2 CLOCK SOURCE
0
10-BIT T/C PRESCALER
TCK2
TCK0
1041H–11/01
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