參數(shù)資料
型號(hào)： MPC5123VY400BR
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： RISC PROCESSOR, PBGA516
封裝： 27 X 27 MM, ROHS COMPLIANT, PLASTIC, TFBGA-516
文件頁(yè)數(shù)： 21/86頁(yè)
文件大?。?/td> 1266K
代理商： MPC5123VY400BR
MPC5121E/MPC5123 Data Sheet, Rev. 1
Electrical and Thermal Characteristics
Freescale Semiconductor
28
NOTES:
1. The SYS_XTAL_IN frequency, Sys PLL, and CORE PLL settings must be chosen so that the resulting e300 clk, csb_clk, MCK,
frequencies do not exceed their respective maximum or minimum operating frequencies.
2. The values are valid for the user-operation mode. There can be deviations for test modes.
3. The selection of the peripheral clock frequencies needs to take care about requirements for baud rates and minimum frequency
limitation.
4.The DDR data rate is 2x the DDR memory bus frequency.
See the MPC5121e Reference Manual for more information on the clock subsystem.
3.3.3
Resets
The MPC5121e/MPC5123 has three reset pins:
PORESET - Power on Reset
HRESET - Hard Reset
SRESET - Software Reset
These signals are asynchronous I/O signals and can be asserted at any time. The input side uses a Schmitt trigger and requires
the same input characteristics as other MPC5121e/MPC5123 inputs, as specified in the DC Electrical Specifications section.
As long as VDD is not stable the HRESET output is not stable.
The timing relationship can be seen below.
NFC Clock
2.08
83
MHz
A1.7
DIU Clock
0.78
100
MHz
A1.8
SDHC Clock
0.78
66.6
MHz
A1.9
MBX Clock
6.25
100
MHz
A1.10
Table 17. Reset Rise / Fall Timing
Description
Min
Max
Unit
SpecID
PORESET1 fall time
1 Make sure that the PORESET does not carry any glitches. The
MPC5121e/MPC5123 has no filter to prevent them from getting into the chip.
—1
ms
A3.4
PORESET rise time
—
1
ms
A3.5
HRESET2,3 fall time
2 HRESET and SRESET must have a monotonous rise time.
3 The assertion of HRESET becomes active at Power on Reset without any
SYS_XTAL clock.
—1
ms
A3.6
HRESET rise time
—
1
ms
A3.7
SRESET fall time
—
1
ms
A3.8
SRESET rise time
—
1
ms
A3.9
Table 16. Clock Frequencies (continued)
Min
Max
Units
SpecID
Preliminary
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