AT91M40800-33AI Atmel, AT91M40800-33AI Datasheet - Page 5

• 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: -

Junction Temperature
1393C–ATARM–19-Nov-04
The average chip-junction temperature T
1.
2.
Where:
•
•
•
•
•
From the first equation, the user can derive the estimated lifetime of the chip and
thereby decide if a cooling device is necessary or not. If a cooling device is to be fitted
on the chip, the second equation should be used to compute the resulting average chip-
junction temperature T
on page 4.
provided in Table 5 on page 4.
datasheet.
P
“Power Consumption” on page 3.
T
T
T
JA
JC
HEAT SINK
A
D
J
J
= ambient temperature (°C).
= device power consumption (W) estimated from data provided in the section
= package thermal resistance, Junction-to-ambient (°C/W), provided in Table 5
=
= package thermal resistance, Junction-to-case thermal resistance (°C/W),
=
T
T
A
A
+
AT91M40800 Electrical Characteristics
+
= cooling device thermal resistance (°C/W), provided in the device
P
P
D
D
HEATSINK
J
JA
in °C.
+
JC
J
in °C can be obtained from the following:
5