參數(shù)資料
型號: MPC5123VY400BR
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 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
文件頁數(shù): 18/86頁
文件大小: 1266K
代理商: MPC5123VY400BR
Electrical and Thermal Characteristics
MPC5121E/MPC5123 Data Sheet, Rev. 1
Freescale Semiconductor
25
3.2.1
System Oscillator Electrical Characteristics
The System Oscillator can work in Oscillator mode or in bypass mode to support an external input Clock as clock reference.
Figure 2. Timing Diagram—SYS_XTAL_IN
3.2.2
RTC Oscillator Electrical Characteristics
3.2.3
System PLL Electrical Characteristics
Table 11. System Oscillator Electrical Characteristics
Characteristic
Sym
Min
Typical
Max
Unit
SpecID
SYS_XTAL frequency
fsys_xtal
15.6
33.3
35.0
MHz
O1.1
Table 12. SYS_XTAL_IN Timing
Sym
Description
Min
Max
Units
SpecID
tCYCLE
SYS_XTALI cycle time.1,2
1 The SYS_XTALI frequency and system PLL settings must be chosen such that the resulting system frequencies do
not exceed their respective maximum or minimum operating frequencies. See the MPC5121e/MPC5123 Reference
Manual.
2 The MIN/Max cycle times are calculated using 1/f
sys_xtal (MIN/MAX) where the fsys_xtal (MIN/MAX) (15.6/35 MHz) are taken
from Table 11.
64.1
28.57
ns
O.1.2
tRISE
SYS_XTALI rise time.3
3 Rise time is measured from 20% of vdd to 80% of vdd.
1
4
ns
O.1.3
tFALL
SYS_XTALI fall time.4
4 Fall time is measured from 20% of vdd to 80% of vdd.
1
4
ns
O.1.4
tDUTY
SYS_XTALI duty cycle (measured at VM)
5
5 SYS_XTALI duty cycle is measured at V
M.
40
60
%
O.1.5
Table 13. RTC Oscillator Electrical Characteristics
Characteristic
Sym
Min
Typical
Max
Unit
SpecID
RTC_XTAL frequency
frtc_xtal
32.768
kHz
O2.1
Table 14. System PLL Specifications
Characteristic
Sym
Min
Typical
Max
Unit
SpecID
Sys PLL input clock frequency1
fsys_xtal
16
33.3
67
MHz
O3.1
Sys PLL input clock jitter2
tjitter
10
ps
O3.2
tFALL
tRISE
tCYCLE
SYS_XTAL_I CLK
tDUTY
CVIH
CVIL
VM
Preliminary
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