AT91M55800-33CI Atmel, AT91M55800-33CI Datasheet - Page 23

• Manufacturer Part Number: AT91M55800-33CI
• Description: IC ARM7 MCU 176 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M55800-33CI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 58
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• For Use With: AT91EB55 - KIT EVAL FOR ARM AT91M55800A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: AT91M5580033CI

Soldering Profile
1745CS–ATARM–05/02
Table 12 gives the recommended soldering profile from J-STD-20.
Table 12. Soldering Profile
Small packages may be subject to higher temperatures if they are reflowed in boards
with larger components. In this case, small packages may have to withstand tempera-
tures of up to 235°C, not 220°C (IR reflow).
Recommended package reflow conditions depend on package thickness and volume.
See Table 13.
Table 13. Recommended Package Reflow Conditions (TQFP and PBGA)
Notes:
A maximum of three reflow passes is allowed per component.
Average Ramp-up Rate (183°C to Peak)
Preheat Temperature 125°C ±25°C
Temperature Maintained Above 183°C
Time within 5°C of Actual Peak
Temperature
Peak Temperature Range
Ramp-down Rate
Time 25°C to Peak Temperature
Parameter
Convection
VPR
IR/Convection
1. The packages are qualified by Atmel by using IR reflow conditions, not convection or
2. By default, the package level 1 is qualified at 220°C (unless 235°C is stipulated).
3. The body temperature is the most important parameter but other profile parameters
VPR.
such as total exposure time to hot temperature or heating rate may also influence
component reliability.
Convection or
IR/Convection
3°C/sec. max.
120 sec. max
60 sec. to 150 sec.
10 sec. to 20 sec.
220 +5/-0°C or
235 +5/-0°C
6°C/sec.
6 min. max
Temperature
220 +5/-0°C
215 to 219°C
220 +5/-0°C
AT91M55800A
VPR
10°C/sec.
60 sec.
215 to 219°C or
235 +5/-0°C
10°C/sec.
(1, 2, 3)
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