AT91SAM7A2-AU Atmel, AT91SAM7A2-AU Datasheet - Page 14
![IC ARM7 MCU 32BIT ROMLESS176LQFP](/photos/12/32/123243/313-176-lqfp_sml.jpg)
AT91SAM7A2-AU
Manufacturer Part Number
AT91SAM7A2-AU
Description
IC ARM7 MCU 32BIT ROMLESS176LQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7A2-AU
Core Processor
ARM7
Core Size
16/32-Bit
Speed
30MHz
Connectivity
CAN, EBI/EMI, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
57
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
176-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Soldering
Profile
14
AT91SAM7A2 - Summary
PRELIMINARY
Table 7 gives the recommended soldering profile from J-STD-20.
Table 7. 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 temperatures of up to
235 C, not 220 C (IR reflow).
Recommended package reflow conditions depend on package thickness and volume. See
Table 8 below.
Table 8. Recommended Package Reflow Conditions
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 VPR.
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 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
(1, 2, 3)
VPR
10 C/sec.
60 sec.
215 to 219 C or
235 +5/-0 C
10 C/sec.
6021BS–ATARM–06-Jul-04