mpc5645s Freescale Semiconductor, Inc, mpc5645s Datasheet - Page 115

• Manufacturer Part Number: mpc5645s
• Description: Mpc5645s Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

The SSTL_18 differential input switch point is at vref = 0.50*vddet.
Note that the Jedec SSTL_18 specifications (JESD8-15a) for a SSTL interface for class II operation supersedes any
specification in this document.
The SSTL_18 Class II output with ipp_sre[2:0] set to enabling sstl_2 1.8V DDR2 mode, at the destination, have a rise/fall time
(10%-90%) between 0.4 ns and 1.0 ns over process, voltage, and temperature driving a 70 ohm transmission line with 0.167 ns
td terminated at the destination with 70 ohms to Vtt (0.5*vddet) with 4.0 pf, representing the DDR2 input capacitance. See
(Figure 29. "SSTL_18 CLass II Test Load").
Freescale Semiconductor
V
I
V
V
I
I
Symbol C
in
oh(dc)
ol(dc)
il(ac)
oh
ol
ipp_do
C AC Input Logic Low
P Pad input Leakage
C Output High Voltage
C Output Low Voltage
C Output min source dc
C Output min sink dc
Current
Level
Level
current
current
Parameter
Table 61. SSTL_18 Class II 1.8V DDR2 DC Specifications (continued)
pad_st/pad_st_odt
Vout=Voh -13.4
Vout=Vol
Condi-
MPC5645S Microcontroller Data Sheet, Rev. 6
Figure 29. SSTL_18 CLass II Test Load
tion
vddet-0.28
13.4
Min
PAD
Nom
Z
Vref-0.25
+/-10
0.28
0
=70 td= 0.167ns
Max
V
µA
V
V
mA
mA
Units
Electrical characteristics
JESD8-15A
JESD8-15A
vddet = 1.7V
Voh = 1.42V
JESD8-15A
vddet = 1.7V
Vol = 0.28V
Vtt
Notes
70
4pF
SpecID
A5.21
A5.22
A5.23
A5.24
A5.25
A5.26
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