AT90LS2333-4AI Atmel, AT90LS2333-4AI Datasheet - Page 30

• Manufacturer Part Number: AT90LS2333-4AI
• Description: IC MCU 2K 4MHZ A/D LV IT 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS2333-4AI

• 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: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Timer Counter 0 - TCNT0
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.
16-bit Timer/Counter1
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 external pin. In addition it can be stopped
as described in the specification for the Timer/Counter1 Control Register - TCCR1A. The different status flags (overflow,
compare match and capture event) and control signals are found in the Timer/Counter Interrupt Flag Register - TIFR. The
interrupt enable/disable settings for Timer/Counter1 are found in the Timer/Counter Interrupt Mask Register - TIMSK.
30
Bit
$32 ($52)
Read/Write
Initial value
AT90S/LS2333 and AT90S/LS4433
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
R/W
1
0
LSB
R/W
0
0
TCNT0