MSC8144ADS Freescale Semiconductor, MSC8144ADS Datasheet - Page 29

• Manufacturer Part Number: MSC8144ADS
• Description: ADS FOR MSC8144 DEVICE
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of MSC8144ADS

• Contents: AMC Card, Power Supply, Cables, USB TAP, Hardware and Documentation
• For Use With/related Products: MSC8144
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.5
This section describes the DC electrical characteristics for the MSC8144.
2.5.1
This section describes the DC electrical specifications for the DDR SDRAM interface of the MSC8144.
Note:
2.5.1.1
Table 6
V
Freescale Semiconductor
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:
DDDDR
(typ) = 1.8 V.
provides the recommended operating conditions for the DDR2 SDRAM component(s) of the MSC8144 when
DDR SDRAM uses V
1.
2.
3.
4.
DC Electrical Characteristics
DDR SDRAM DC Electrical Characteristics
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
DDR2 (1.8 V) SDRAM DC Electrical Characteristics
1
REF
Table 6. DDR2 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
2
OUT
OUT
3
is expected to be equal to 0.5 × V
4
is expected to be within 50 mV of the DRAM V
= 0.280 V)
= 1.420 V)
REF
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
. This rail should track variations in the DC level of V
DDDDR
(typ) = 2.5 V and DDR2 SDRAM uses V
REF
may not exceed ±2% of the DC value.
DDDDR
Symbol
V
MV
DDDDR
, and to track V
V
V
I
I
I
V
OH
OZ
OL
TT
REF
IH
IL
DD
at all times.
≤
DDDDR
0.49 × V
MV
MV
V
OUT
REF
REF
DDDDR
–13.4
–0.3
13.4
Min
–50
1.7
DC variations as measured at the receiver.
≤
+ 0.125
– 0.04
DDDDR
V
DDDDR
DDDDR
.
DDDDR
.
(typ) = 1.8 V.
(typ) = 1.8 V
M
0.51 × V
MV
V
V
DDDDR
REF
REF
Max
Electrical Characteristics
1.9
50
—
—
– 0.125
+ 0.04
DDDDR
+ 0.3
Unit
mA
mA
μA
V
V
V
V
V
29