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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC821 датащи(PDF) 64 Page - NXP Semiconductors |
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MPC821 датащи(HTML) 64 Page - NXP Semiconductors |
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64 / 242 page  Functional Description MPC8XXFADS Design Specification—Rev 0.1 PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE 4•13 Power There are 4 power buses with the MPC8XXs: 1) I/O 2) Internal Logic 3) Keep Alive 4) PLL and there are 3 power buses on the MPC8XXFADS: 1) 5V bus 2) 3.3V bus 3) 12V bus FIGURE 4-1 MPC8XXFADS Power Scheme To support off-board application development, the power buses are connected to the expansion con- nectors, so that external logic may be powered directly from the board. The maximum current allowed to be drawn from the board on each bus is shown in TABLE 4-26. "Off-board Application Maximum 3.3V 2V 5V VKA PCMCIA Power Control MPC8XX 12V VDDL K.A. VDDSYN VCC VPP PCMCIA Buffers FADS Logic & Peripherals VDDH MOTHER BOARD DAUGHTER BOARD Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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