HY5PS1G831F Datasheet, PDF (8/33 Pages) Hynix Semiconductor – 1Gb DDR2 SDRAM

1HY5PS1G431(L)F
1HY5PS1G831(L)F
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PIN
TYPE
DESCRIPTION
DQS, (DQS)
(UDQS),(UDQS)
(LDQS),(LDQS)
(RDQS),(RDQS)
Data Strobe : Output with read data, input with write data. Edge aligned with read data, cen-
tered in write data. For the x16, LDQS correspond to the data on DQ0~DQ7; UDQS corre-
sponds to the data on DQ8~DQ15. For the x8, an RDQS option using DM pin can be enabled
via the EMRS(1) to simplify read timing. The data strobes DQS, LDQS, UDQS, and RDQS may
be used in single ended mode or paired with optional complementary signals DQS,
LDQS,UDQS and RDQS to provide differential pair signaling to the system during both reads
and wirtes. An EMRS(1) control bit enables or disables all complementary data strobe signals.
Input/Output
In this data sheet, "differential DQS signals" refers to any of the following with A10 = 0 of
EMRS(1)
x4 DQS/DQS
x8 DQS/DQS
if EMRS(1)[A11] = 0
x8 DQS/DQS, RDQS/RDQS,
if EMRS(1)[A11] = 1
x16 LDQS/LDQS and UDQS/UDQS
"single-ended DQS signals" refers to any of the following with A10 = 1 of
EMRS(1)
x4 DQS
x8 DQS
if EMRS(1)[A11] = 0
x8 DQS, RDQS, if EMRS(1)[A11] = 1
x16 LDQS and UDQS
NC
VDDQ
VSSQ
VDDL
VSSDL
VDD
VSS
VREF
No Connect : No internal electrical connection is present.
Supply
DQ Ground
Supply
DQ Power Supply : 1.8V +/- 0.1V
Supply
DLL Power Supply : 1.8V +/- 0.1V
Supply
DLL Ground
Supply
Power Supply : 1.8V +/- 0.1V
Supply
Ground
Supply
Reference voltage for inputs for SSTL interface.
Rev. 1.2 / Dec 2006
8