Hi Harold, One of my project I worked on SPI version this is what I did. I used pic TX RX pin to talk to PC and thru PC dos software writes or reads the EEPROM. All you need to do is "add a routine to write and read SPI EEPROM" then thru serial port or any available pin control it. If the EEPROM data is not big better way is what you do not want to do Write it in the pic with key combination press or so. Andre -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Harold Hallikainen Sent: Thursday, October 02, 2008 1:35 PM To: Pic List Subject: [EE] In Circuit Serial Flash Programmer? I'm looking at using an M25P32 in a PIC project. The data in this chip will be unchanging, so I don't want to have to write code to program it through the PIC. Instead, I'm thinking of an in-circuit SPI programmer that could program the chip before the PIC is programmed (and all lines are tri-state). Does anyone have a favorite device for this sort of application? It seems like it should be something that sits on the end of a USB cable and connects to the SPI lines and maybe Vpp. Thanks! Harold -- FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist IMPORTANT NOTICE: This notice constitutes Proprietary Rights identification of this email including all attachments, which is property that is intended only for the use of the individual or entity to which it is addressed. It also may contain proprietary data or information that is privileged, confidential, or otherwise protected from disclosure under applicable law. The recipient of this data agrees to abide by the United States Export Control of Technical Data and Equipment under the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). The recipient agrees to abide by these laws and their regulations not only for export and re-export, but for disclosure to non-U.S. citizens. This email does not grant or assign rights of ownership in the proprietary subject matter herein, nor shall it be construed as a joint venture, partnership, teaming agreement, or other formal business relationship. If the reader of this e-mail transmission! is not the intended recipient or the employee or agent responsible for delivering the transmission to the intended recipient, you are hereby notified that any dissemination, distribution, copying or use of this e-mail or its contents is strictly prohibited. Please notify the sender you received it in error by responding to the e-mail and then permanently delete it and all copies of the e-mail immediately, including any copies of it in your deleted email folder. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist