AT90S2333-8AC Atmel, AT90S2333-8AC Datasheet - Page 29

• Manufacturer Part Number: AT90S2333-8AC
• Description: IC MCU 2K FLSH 8MHZ A/D 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S2333-8AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• 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): 4 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 31. Timer/Counter0 Block Diagram
Timer/Counter0 Control Register - TCCR0
•
These bits are reserved bits in the AT90S2333/4433 and always read as zero.
•
The Clock Select0 bits 2,1, and 0 define the prescaling source of Timer0.
Table 9. Clock 0 Prescale Select
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 configured as an output. This feature can give the user SW control of the counting.
Bit
$33 ($53)
Read/Write
Initial value
Bits 7-3 - Res: Reserved bits
Bits 2,1,0 - CS02, CS01, CS00: Clock Select0, bit 2,1 and 0
CS02
0
0
0
0
1
1
1
1
CS01
R
7
0
-
0
0
1
1
0
0
1
1
R
6
0
-
CS00
0
1
0
1
0
1
0
1
R
5
0
-
Description
Stop, Timer/Counter0 is stopped.
CK
CK / 8
CK / 64
CK / 256
CK / 1024
External Pin T0, falling edge
External Pin T0, rising edge
R
4
0
-
AT90S/LS2333 and AT90S/LS4433
R
3
0
-
CS02
R/W
2
0
CS01
R/W
1
0
CS00
R/W
0
0
TCCR0
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