At89isp Programmer Cable

1. Introduction This application note describes the Atmel ® AT89ISP cable Interface This in-system programmer cable communicates serially with Atmel's AT89S/AT89LP microcontrol- lers and reprograms them in the circuit without removal. For surface-mounted devices, eliminating this step greatly reduces the possibility of damages caused by inser- tion/removal of delicate leads, and allows for design changes and software/parameter updates in the field. 2. Parallel Port Settings For optimal operation, it is recommended that the user’s PC/laptop parallel port setting be configured for EPP (Enhanced Parallel Port). This CAN be done in the BIOS screen after a boot-up sequence. For laptops without a parallel port, a USB-to-Parallel converter product such as the one featured in the following link is recommended:
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