Features of In-Circuit Programming

Описание: Features of In-Circuit Programming In-Circuit Programming (ICP) is the ability of memory chips and micro controllers to be directly programmed in the device instead of installing them into a programmer socket. It can be used both to design and to produce, as well as to repair. The advantages of the method:- There is no need to resolder the chip (sometimes repeatedly). This is particularly important when you debug and repair devices as it reduces the risk of damage and ensures faster operation. - No need for a costly socket.- Applies to chips with RAM data storage. When being soldered and de-energized, the chips will lose all the data. But there are also some disadvantages:- programming speed can be lower - there is a possibility of damage to the device, programmer or the firmware if the device doesn't allow for such mode of operation, or a mounter made a mistake during the connecting procedure. It should be noted that multiple devices have a special service mode of operation when memory chips operate through a system interface without being directly connected to circuit pins. Standard programming interfaces include I2C, SPI, Microwire, Jaytag, PIC microcontroller. For example, an STK 500 board is provided besides COM ports with two connectors for in-circuit programming - ISP6PIN and ISP10PIN. An in-circuit programmer AVR IE-PX-400 has been specifically designed for this. Also programmer producers offer various adapters for programming circuits in a target board. For example, TEST CLIP adapter can program 24 and 93 series memory chips, circuits of PIC controllers in SO-8 package. AE-ISP-MSP430 adapter can program MSP430 micro controllers in a user device using a JTAG interface. The list of circuits programmed with multipurpose AE-ISP-U1 adapter is quite long. But to program with this adapter, one should take into account that the connection scheme for two different types of circuits would not be the same. This information can be found on the producer site.