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MPC5645S bảng dữ liệu(PDF) 113 Page - Freescale Semiconductor, Inc

tên linh kiện MPC5645S
Giải thích chi tiết về linh kiện  Qorivva MPC5645S Microcontroller Data Sheet
PDF  146 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC5645S bảng dữ liệu(HTML) 113 Page - Freescale Semiconductor, Inc

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Qorivva MPC5645S Microcontroller Data Sheet, Rev. 8
Freescale Semiconductor
113
Figure 27 shows the DDR SDRAM write timing.
Figure 27. DDR write timing
Figure 28 and Figure 29 show the DDR SDRAM read timing.
Figure 28. DDR read timing, DQ vs. DQS
1 V
DDE_DR value is 1.8 V for DDR2 mode, 2.5 V for DDR1 mode, and 1.8 V for LPDDR mode.
2 C
Z at -40, 140, 25
oC.
3 Measured with clock pin loaded with differential 100 ohm termination resistor.
4 All transitions measured at mid-supply (V
DDE_DR/2).
5 Measured with all outputs except the clock loaded with 50 ohm termination resistor to V
DDE_DR/2.
6 In this window, the first rising edge of DQS should occur. From the start of the window to DQS rising edge, DQS should
be low.
7 Window position is given for t
DQSEN = 2.0 tCK. For other values of tDQSEN, window position is shifted accordingly.
MCK
tCH
tCL
DQS
tDQSS
DQ, DM (out)
tDS
tDH
tCK
DQS (in)
Any DQ (in)
tDQSQ
tDQSQ



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