AT90LS4433-4PC Atmel, AT90LS4433-4PC Datasheet - Page 35
![IC MCU 4K FLSH 4MHZ A/D LV 28DIP](/photos/7/21/72189/453-28-dip_sml.jpg)
AT90LS4433-4PC
Manufacturer Part Number
AT90LS4433-4PC
Description
IC MCU 4K FLSH 4MHZ A/D LV 28DIP
Manufacturer
Atmel
Series
AVR® 90LSr
Datasheet
1.AT90S4433-8AC.pdf
(126 pages)
Specifications of AT90LS4433-4PC
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
20
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 6 V
Data Converters
A/D 6x10b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Timer Counter0 – TCNT0
16-bit Timer/Counter1
1042H–AVR–04/03
The Stop condition provides a Timer Enable/Disable function. The prescaled CK modes
are scaled directly from the CK Oscillator clock. If the external pin modes are used for
Timer/Counter0, transitions on PD4/(T0) will clock the counter even if the pin is config-
ured as an output. This feature can give the user software control of the counting.
The Timer/Counter0 is realized as an up-counter with read and write access. If the
Timer/Counter0 is written and a clock source is present, the Timer/Counter0 continues
counting in the clock cycle following the write operation.
Figure 32 shows the block diagram for Timer/Counter1.
Figure 32. Timer/Counter1 Block Diagram
The 16-bit Timer/Counter1 can select clock source from CK, prescaled CK or an exter-
nal pin. In addition, it can be stopped as described in the specification for the
Timer/Counter1 Control Register (TCCR1A). The different Status Flags (Overflow, Com-
pare Match and Capture Event) and control signals are found in the Timer/Counter
Bit
$32 ($52)
Read/Write
Initial Value
MSB
R/W
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
2
0
AT90S/LS4433
R/W
1
0
LSB
R/W
0
0
TCNT0
T1
35
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