LPC2923FBD100,551 NXP Semiconductors, LPC2923FBD100,551 Datasheet - Page 77

• Manufacturer Part Number: LPC2923FBD100,551
• Description: IC ARM9 MCU FLASH 256KB 100-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2900r

Specifications of LPC2923FBD100,551

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 125MHz
• Connectivity: CAN, I²C, LIN, SPI, UART/USART, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 60
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 16K x 8
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 16x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: LPC29
• Core: ARM968E-S
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935287115551

NXP Semiconductors
LPC2921_23_25_3
Product data sheet
12.4 Reflow soldering
Key characteristics in reflow soldering are:
Table 40.
Table 41.
Moisture sensitivity precautions, as indicated on the packing, must be respected at all
times.
Studies have shown that small packages reach higher temperatures during reflow
soldering, see
Package thickness (mm)
< 2.5
≥ 2.5
Package thickness (mm)
< 1.6
1.6 to 2.5
> 2.5
•
•
•
Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to
higher minimum peak temperatures (see
reducing the process window
Solder paste printing issues including smearing, release, and adjusting the process
window for a mix of large and small components on one board
Reflow temperature profile; this profile includes preheat, reflow (in which the board is
heated to the peak temperature) and cooling down. It is imperative that the peak
temperature is high enough for the solder to make reliable solder joints (a solder paste
characteristic). In addition, the peak temperature must be low enough that the
packages and/or boards are not damaged. The peak temperature of the package
depends on package thickness and volume and is classified in accordance with
Table 40
SnPb eutectic process (from J-STD-020C)
Lead-free process (from J-STD-020C)
and
Figure
All information provided in this document is subject to legal disclaimers.
41
33.
Rev. 03 — 14 April 2010
Package reflow temperature (°C)
Volume (mm
< 350
235
220
Package reflow temperature (°C)
Volume (mm
< 350
260
260
250
3
3
ARM9 microcontroller with CAN, LIN, and USB
)
)
Figure
LPC2921/2923/2925
350 to 2000
260
250
245
33) than a SnPb process, thus
≥ 350
220
220
245
> 2000
260
245
© NXP B.V. 2010. All rights reserved.
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