AT90LS4433-4AC Atmel, AT90LS4433-4AC Datasheet - Page 100

• Manufacturer Part Number: AT90LS4433-4AC
• Description: IC MCU 4K 4MHZ A/D LV 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS4433-4AC

• 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: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

External Clock Drive
Waveforms
100
AT90S/LS4433
Figure 69. External Clock
Table 39. External Clock Drive
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
CLCL
VIL1
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
VIH1
V
250.0
100.0
100.0
CC
Min
0.0
= 2.7V to 6.0V
Max
4.0
1.6
1.6
V
125.0
CC
50.0
50.0
Min
0.0
= 4.0V to 6.0V
Max
8.0
0.5
0.5
1042H–AVR–04/03
Units
MHz
ns
ns
ns
µs
µs