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PCBA processing
technology has been becoming mature and has a wide range of applications. It
plays a key role in today's various smart devices.
In order for the
circuit board to achieve the function of the intended design, in addition to
the hardware, the matching support of the software and the program is also
required.
Then the question
arises: How to "transfer" a program to the IC?
I'm sure you already
know that the answer is "programming", also known as
"burning" by some.
Programming, which
transfers the program to the process memory space inside the chip.
1. Offline programming
Offline programming
refers to the use of off-line programming software and PCB CAD design files to
compile SMT patch programs on a computer. Offline programming can save online
programming time, which can reduce the downtime of the entire PCBA processing
and improve the utilization of equipment.
Offline programming
is compatible with chips in different packages via different adapters. This
chip can be used with an adapter for program burning.
Adapters are
precision fixtures. Different chips and packages require different adapters.
Today, packaging is
moving towards small and flat BGAs, QFNs, etc. Such as the widely used Emmc
chip. Although these adapters are not cheap.
If something goes
wrong in production testing, you need to remove the chip from the adapter and
reprogram it according to the prescribed process, which wastes time and effort
and is expensive.
There are some emergencies
in PCBA production. If the temperature resistance of the circuit board is not
enough, the chip will deform when it is removed, which increases the risk of
scrapping.
Steps of offline
programming: PCB program data editing → automatic programming optimization and
editing → input data into the device → edit the optimized product program on
the placement machine → proofreading and backing up the placement program
2. online
programming
Online programming
is actually the process of manually inputting the pick-up and placement program
on the placement machine.
In-circuit
programming uses the chip's standard communication bus, such as USB, SWD, JTAG,
UART, etc. The interface is usually fixed and has fewer pins connected during
programming.
Because the
interface communication rate is not high, the general cable can be used for
recording without high power consumption.
Since in-line burn
is programmed over a wired connection, if errors are found during production
testing, the faulty PCBA can be traced back and re-burned without disassembling
the chip. This not only saves production costs, but also improves programming
efficiency.
More importantly,
the line is moving towards automation. More and more manufacturers are adding
functional testing machines such as ICT and FCT to the production line.
Production methods using automatic fixtures and online burning can be omitted
during the burning stage. Manual operation, directly burning after installing
the board, and then sending the PCBA to the testing machine for testing. The
entire production process is fully automated, which can greatly improve
production efficiency.
Therefore, in PCBA
processing, the advantages of online burning are obvious, and it has become a
important indicator to measure the PCBA manufacturer's process accuracy,
production efficiency, cost, quality control, scale and capital.
AllWinPcba provides IC programming services in our full turn-key PCB assembly services, Look forward to cooperation with you, don't hesitate, if you have any questions, please contact us anytime. Tell:+1.608.698.5398. Email:svc@allwinpcba.com
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