AT91M40800-33AI Atmel, AT91M40800-33AI Datasheet - Page 15

• Manufacturer Part Number: AT91M40800-33AI
• Description: IC ARM7 MCU 100 TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M40800-33AI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Peripheral Signals
USART Signals
1393C–ATARM–19-Nov-04
The inputs have to meet the minimum pulse width and period constraints shown in
Table 14 and Table 15, and represented in Figure 6.
Table 14. USART Input Minimum Pulse Width
Table 15. USART Minimum Input Period
Figure 6. USART Signals
Symbol
US
Symbol
US
RXD
SCK
1
2
AT91M40800 Electrical Characteristics
Parameter
SCK/RXD Minimum Pulse Width
Parameter
SCK Minimum Input Period
US
1
US
1
Min Pulse Width
Min Input Period
US
5(t
9(t
2
CP
CP
/2)
/2)
Units
Units
ns
ns
15