MSC8144 Freescale Semiconductor, MSC8144 Datasheet - Page 30

• Manufacturer Part Number: MSC8144
• Description: Quad Core Digital Signal Processor
• Manufacturer: Freescale Semiconductor

Electrical Characteristics
Table 9 provides the DDR capacitance when
2.6.1.2
Table 10 provides the recommended operating conditions for the DDR SDRAM component(s) of the MSC8144 when
V
Table 11 provides the DDR capacitance when
Table 12 lists the current draw characteristics for
30
Input/output capacitance: DQ, DQS, DQS
Delta input/output capacitance: DQ, DQS, DQS
Note:
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
Notes:
Input/output capacitance: DQ, DQS
Delta input/output capacitance: DQ, DQS
Note:
Current draw for MV
Note:
DDDDR
(typ) = 2.5 V.
This parameter is sampled. V
1.
2.
3.
4.
This parameter is sampled. V
The voltage regulator for MV
Parameter/Condition
V
MV
Peak-to-peak noise on MV
V
equal to MV
Output leakage is measured with all outputs are disabled, 0 V
DDDDR
TT
DDR (2.5V) SDRAM DC Electrical Characteristics
1
REF
Table 10. DDR SDRAM DC Electrical Characteristics for V
is not applied directly to the device. It is the supply to which far end signal termination is made and is expected to be
REF
2
OUT
OUT
3
4
is expected to be equal to 0.5 × V
is expected to be within 50 mV of the DRAM V
= 0.35 V)
Parameter / Condition
= 1.95 V)
Parameter/Condition
Parameter/Condition
REF
Table 11. DDR SDRAM Capacitance for V
Table 9. DDR2 SDRAM Capacitance for V
. This rail should track variations in the DC level of V
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 1
Table 12. Current Draw Characteristics for MV
REF
DDDDR
DDDDR
REF
must be able to supply up to 500 μA current.
may not exceed ±2% of the DC value.
= 1.8 V ± 0.090 V, f = 1 MHz, T
= 2.5 V ± 0.125 V, f = 1 MHz, T
V
V
DDDDR
DDDDR
MV
DDDDR
REF
(typ) = 1.8 V.
Symbol
(typ) = 2.5 V.
V
MV
.
DDDDR
, and to track V
V
V
I
I
V
I
OH
OZ
OL
TT
REF
IH
IL
DD
at all times.
≤
A
DDDDR
A
V
= 25°C, V
0.49 × V
= 25°C, V
MV
MV
OUT
Symbol
Symbol
Symbol
DDDDR
REF
REF
I
DDDDR
MVREF
DDDDR
–16.2
C
C
DC variations as measured at the receiver.
≤
Min
–0.3
16.2
C
–30
C
2.3
DIO
DIO
IO
IO
V
– 0.04
+ 0.15
DDDDR
DDDDR
OUT
.
OUT
(typ) = 1.8 V
(typ) = 2.5 V
= V
= V
DDDDR
.
DDDDR
DDDDR
REF
Min
Min
Min
—
—
—
6
6
/2, V
(typ) = 2.5 V
/2, V
0.51 × V
MV
MV
OUT
V
OUT
REF
REF
DD
Max
Freescale Semiconductor
2.7
(peak-to-peak) = 0.2 V.
30
—
—
(peak-to-peak) = 0.2 V.
+ 0.3
+ 0.04
– 0.15
DDDDR
Max
Max
Max
500
0.5
0.5
8
8
Unit
Unit
Unit
Unit
μA
pF
pF
pF
pF
mA
mA
μA
V
V
V
V
V