HMT112U7BFR8C-G7 Datasheet, PDF (7/51 Pages) Hynix Semiconductor – 240pin DDR3 SDRAM Registered DIMM

Symbol
DQS0–DQS8
DQS0–DQS8
SA0–SA2
SDA
SCL
VDDSPD
Type
SSTL
Supply
Polarity
Function
Differential
crossing ^{Data strobe for input and output data.}
—
These signals are tied at the system planar to either VSS or VDDSPD to con-
figure the serial SPD EEPROM address range.
This bidirectional pin is used to transfer data into or out of the SPD
—
EEPROM. An external resistor may be connected from the SDA bus line to
VDDSPD to act as a pullup on the system board.
This signal is used to clock data into and out of the SPD EEPROM. An
—
external resistor may be connected from the SCL bus time to VDDSPD to act
as a pullup on the system board.
Power supply for SPD EEPROM. This supply is separate from the VDD/VDDQ
power plane. EEPROM supply is operable from 3.0V to 3.6V.
Pin Assignments
Front Side(left 1–60) Back Side(right 121–180) Front Side(left 61–120) Back Side(right 181–240)
Pin x64
x72 Pin x64
x72
# Non-ECC ECC # Non-ECC ECC
Pin x64
x72 Pin x64
x72
# Non-ECC ECC # Non-ECC ECC
1 VREFDQ VREFDQ 121
VSS
VSS
61
A2
A2 181
A1
A1
2
VSS
VSS 122 DQ4
DQ4
62
VDD
VDD 182
VDD
VDD
3 DQ0
DQ0 123 DQ5
DQ5
63
CK1
CK1 183 VDD
VDD
4 DQ1
DQ1 124
VSS
VSS
64
CK1
CK1 184 CK0
CK0
5
VSS
VSS 125 DM0
DM0
65
VDD
VDD 185 CK0
CK0
6 DQS0 DQS0 126 NC
NC
66
VDD
VDD 186
VDD
VDD
7 DQS0 DQS0 127 VSS
VSS
67 VREFCA VREFCA 187
NC
NC
8
VSS
VSS 128 DQ6
DQ6
68
NC
NC 188
A0
A0
9 DQ2
DQ2 129 DQ7
DQ7
69
VDD
VDD 189
VDD
VDD
10 DQ3
DQ3 130
VSS
VSS
70
A10
A10 190 _BA1²
BA1²
11
VSS
VSS 131 DQ12
DQ12
71
BA0²
BA0^{2 191}
VDD
VDD
12 DQ8
DQ8 132 DQ13
DQ13
72
VDD
VDD 192 RAS
RAS
13 DQ9
DQ9 133
VSS
VSS
73
WE
WE 193
S0
S0
14
VSS
VSS 134 DM1
DM1
74
CAS
CAS 194 VDD
VDD
15 DQS1 DQS1 135 NC
NC
75
VDD
VDD 195 ODT0
ODT0
16 DQS1 DQS1 136 VSS
VSS
76
S1
S1 196 A13
A13
NC = No Connect; RFU = Reserved Future Use
1. NC pins should not be connected to anything on the DIMM, including bussing within the NC group.
2. Address pins A3–A8 and BA0 and BA1 can be mirrored or not mirrored.
Rev. 0.1 / Nov. 2009
7