AT90S4433-8PC Atmel, AT90S4433-8PC Datasheet - Page 22

• Manufacturer Part Number: AT90S4433-8PC
• Description: IC MCU 4K FLSH 8MHZ A/D 28DIP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S4433-8PC

• 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: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 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

22
AT90S/LS4433
Figure 24. Reset Logic
Table 4. Reset Characteristics (V
Note:
Symbol
RESET
V
V
V
V
BODLEVEL
POT
CC
RST
BOT
BODEN
(1)
1. The Power-on Reset will not work unless the supply voltage has been below V
(falling).
Parameter
Power-on Reset
Threshold
Voltage, rising
Power-on Reset
Threshold
Voltage, falling
RESET Pin
Threshold
Voltage
Brown-out Reset
Threshold
Voltage
Power-on Reset
Reset Circuit
Reset Circuit
RC Oscillator
Brown-out
Watchdog
On-chip
Circuit
Timer
(BODLEVEL=1)
(BODLEVEL=0)
CC
Min
1.0
0.4
2.2
3.5
= 5.0V)
CK
Register (MCUSR)
MCU Status
DATA BUS
CKSEL[2:0]
(BODLEVEL=1)
(BODLEVEL=0)
Delay Counters
0.6 V
Typ
1.4
0.6
2.7
4.0
CC
(BODLEVEL=1)
(BODLEVEL=0)
Full
Max
1.8
0.8
3.0
4.5
1042H–AVR–04/03
Units
V
V
V
V
POT