AT91R40807-33AI Atmel, AT91R40807-33AI Datasheet - Page 15

• Manufacturer Part Number: AT91R40807-33AI
• Description: IC ARM7 MCU 176 TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91R40807-33AI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 136K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Peripheral Signals
USART Signals
1367C–01/02
The inputs must meet the minimum pulse width and period constraints shown in Table 14 and
Table 15, and represented in Figure 6.
Table 14. USART Asynchronous Mode Input Minimum Pulse Width
Table 15. USART Minimum Input Period
Figure 6. USART Signals
Symbol
US
Symbol
US
1
2
RXD
SCK
Parameter
SCK/RXD Minimum Pulse Width
Parameter
SCK Minimum Input Period
US
1
US
1
Min Input Period
Min Pulse Width
US
9(t
5(t
2
CP
CP
/2)
/2)
AT91R40807
Units
Units
ns
ns
15