SPC5123YVY400B Freescale Semiconductor, SPC5123YVY400B Datasheet - Page 25

• Manufacturer Part Number: SPC5123YVY400B
• Manufacturer: Freescale Semiconductor

Specifications of SPC5123YVY400B

• Lead Free Status / Rohs Status: Compliant

3.2.1
The System Oscillator can work in Oscillator mode or in bypass mode to support an external input Clock as clock reference.
3.2.2
3.2.3
Freescale Semiconductor
1
2
3
4
5
SYS_XTALI CLK
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.
The MIN/Max cycle times are calculated using 1/f
from
Rise time is measured from 20% of vdd to 80% of vdd.
Fall time is measured from 20% of vdd to 80% of vdd.
SYS_XTALI duty cycle is measured at V
t
t
CYCLE
t
t
Sym
DUTY
SYS_XTALI frequency
RTC_XTALI frequency
Sys PLL input clock frequency
Sys PLL input clock jitter
RISE
FALL
Table
System Oscillator Electrical Characteristics
RTC Oscillator Electrical Characteristics
System PLL Electrical Characteristics
11.
SYS_XTALI cycle time.
SYS_XTALI rise time.
SYS_XTALI fall time.
SYS_XTALI duty cycle (measured at V
Characteristic
Characteristic
Characteristic
Table 11. System Oscillator Electrical Characteristics
Table 13. RTC Oscillator Electrical Characteristics
2
V
M
t
DUTY
4
1
Figure 2. Timing Diagram—SYS_XTALI
3
Table 14. System PLL Specifications
1,2
MPC5121E/MPC5123 Data Sheet, Rev. 3
t
CYCLE
Description
Table 12. SYS_XTALI Timing
M
.
V
f
f
f
sys_xtal
sys_xtal
rtc_xtal
Sym
M
Sym
Sym
t
t
jitter
DUTY
sys_xtal (MIN/MAX)
M
)
5
V
M
15.6
Min
Min
Min
16
—
—
where the f
Typical
Typical
Typical
32.768
t
RISE
33.3
33.3
—
CV
CV
sys_xtal (MIN/MAX)
IH
IL
Electrical and Thermal Characteristics
Max
35.0
Max
Max
64.1
Min
67
10
—
40
1
1
28.57
Max
60
(15.6/35 MHz) are taken
4
4
MHz
MHz
Unit
Unit
Unit
kHz
ps
Units
ns
ns
ns
%
SpecID
SpecID
SpecID
O1.1
O2.1
O3.1
O3.2
t
FALL
SpecID
O.1.2
O.1.3
O.1.4
O.1.5
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