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Discussion Groups | 68HC12 | DP256 Core Supply
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
DP256 Core Supply - zeeschplitz - Jan 2 10:44:00 2003
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have downloaded the schematic of the DP256 evaluation board and found adjustable voltage regulator (U8=LP2951) in the circuit. The DP256 contains internal voltage regulator - can he not do the job alone? Why is this regulator adjustable? Are there any other valid core supplies than 2,5Volt? |
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Re: DP256 Core Supply - Gordon Doughman - Jan 2 13:51:00 2003
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The external voltage regulator for the core supply was put on the DP256 EVB for initial silicon evaluation (in case the internal voltage regulator didn't work). On all currently available silicon, the internal voltage regulator should be used. If an external regulator is used, the core voltage should remain within the published electrical spec ratings. Regards, Gordon wrote: > have downloaded the schematic of the DP256 evaluation board and found > adjustable voltage regulator (U8=LP2951) in the circuit. > > The DP256 contains internal voltage regulator - can he not do the job > alone? Why is this regulator adjustable? Are there any other valid > core supplies than 2,5Volt? > -------------------------------------------------------- > To unsubscribe from this group, send an email to: > To learn more about Motorola Microcontrollers, please visit > http://www.motorola.com/mcu > -- =============================================================== Gordon Doughman Ph: 937-438-6811 Motorola Semiconductor Fax: 937-434-7457 Field Applications Engineer Pager: 800-759-8352 Pin: 1304089 Suite 175 3131 Newmark Drive Miamisburg, OH 45342 Check out my HC12 book at: http://www.rtcgroup.com/books/ |
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