mpc8560vt667jb Freescale Semiconductor, Inc, mpc8560vt667jb Datasheet - Page 18

• Manufacturer Part Number: mpc8560vt667jb
• Description: Mpc8560 Powerquicc Iii Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

DDR SDRAM
6 DDR SDRAM
This section describes the DC and AC electrical specifications for the DDR SDRAM interface of the
MPC8560.
6.1 DDR SDRAM DC Electrical Characteristics
Table 13
MPC8560.
Table 14
18
Input/output capacitance: DQ, DQS, MSYNC_IN
Delta input/output capacitance: DQ, DQS
Note:
1.This parameter is sampled. GV
I/O supply voltage
I/O reference voltage
I/O termination voltage
Input high voltage
Input low voltage
Output leakage current
Output high current (V
Output low current (V
MV
Notes:
1.GV
2.MV
3.V
4.V
5.Output leakage is measured with all outputs disabled, 0 V
REF
TT
IH
Peak-to-peak noise on MV
to be equal to MV
than t
cannot be greater than t
DD
REF
can tolerate an overshoot of 1.2V over GV
provides the recommended operating conditions for the DDR SDRAM component(s) of the
provides the DDR capacitance.
is not applied directly to the device. It is the supply to which far end signal termination is made and is expected
input leakage current
is expected to be within 50 mV of the DRAM GV
is expected to be equal to 0.5 × GV
MCK
Parameter/Condition
Parameter/Condition
. V
IL
can tolerate an undershoot of 1.2V below GND for a pulse width of ≤3 ns, and the pulse width
OUT
OUT
REF
MPC8560 Integrated Processor Hardware Specifications, Rev. 4.2
= 0.35 V)
. This rail should track variations in the DC level of MV
= 1.95 V)
Table 13. DDR SDRAM DC Electrical Characteristics
MCK
DD
REF
.
= 2.5 V ± 0.125 V, f = 1 MHz, T
may not exceed ±2% of the DC value.
Table 14. DDR SDRAM Capacitance
DD
, and to track GV
DD
Symbol
MV
GV
I
VREF
V
V
I
V
I
I
OH
OZ
OL
for a pulse width of ≤3 ns, and the pulse width cannot be greater
TT
REF
IH
IL
DD
Symbol
DD
C
C
DIO
IO
at all times.
≤
MV
MV
0.49 × GV
V
OUT
A
DD
REF
REF
2.375
–15.2
= 25°C, V
–0.3
15.2
Min
–10
—
DC variations as measured at the receiver.
≤
– 0.04
+ 0.18
GV
DD
Min
—
DD
6
OUT
.
= GV
MV
MV
REF
0.51 × GV
GV
REF
REF
.
2.625
DD
Max
DD
100
10
—
—
Max
+ 0.04
– 0.18
/2, V
+ 0.3
0.5
8
DD
OUT
(peak to peak) = 0.2 V.
Freescale Semiconductor
Unit
mA
mA
μA
μA
Unit
V
V
V
V
V
pF
pF
Notes
Notes
—
—
—
1
2
3
4
4
5
1
1