Datasheet
M2Y2G64CB8HC5N / M2Y2G64CB8HC9N
2GB: 256M x 64
Unbuffered DDR3 SDRAM DIMM
REV 1.1 6
01/2010
© NANYA TECHNOLOGY CORP.
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
Serial Presence Detect -- Part 1 of 2 (2GB)
256Mx64 2 Ranks UNBUFFERED DDR3 SDRAM DIMM based on 128Mx8, 8Banks, 8K Refresh, 1.5V DDR3 SDRAMs with SPD
Byte
Description
SPD Entry Value
Serial PD Data Entry
(Hexadecimal)
Note
-BE
-CG
-BE
-CG
0
CRC range, EEPROM bytes, bytes used
CRC Covers Bytes: 0~116,
Total SPD Bytes: 256,
SPD Bytes Used: 176,
92
1
SPD revision
Revision 1.0
10
2
DRAM device type
DDR3 SDRAM
0B
3
Module type (form factor)
UDIMM
02
4
SDRAM Device density and banks
8 banks, 1Gb
02
5
SDRAM device row and column count
14 rows, 10 columns
11
6
Module minimum nominal voltage
1.5V
00
7
Module ranks and device DQ count
2 ranks, 8 bits
09
8
ECC tag and module memory Bus width
Non ECC, 64bits
03
9
Fine timebase dividend/divisor (in ps)
2.5ps
52
10
Medium timebase dividend
1ns
01
11
Medium timebase divisor
8ns
08
12
Minimum SDRAM cycle time (tCKmin)(ns)
1.875ns
1.5ns
0F
0C
13
Reserved
Undefined
00
14
CAS latencies supported
6,7,8
6,7,8,9
1C
3C
15
CAS latencies supported
Undefined
00
16
Minimum CAS latency time (tAAmin)(ns)
13.125ns
69
17
Minimum write recovery time (tWRmin)
15ns
78
18
Minimum -to- delay (tRCDmin)(ns)
13.125ns
69
19
Minimum Row Active to Row Active delay (tRRDmin)(ns)
7.5ns
6ns
3C
30
20
Minimum row Precharge delay (tRPmin)(ns)
13.125ns
69
21
Upper nibble for tRAS and tRC
1,1
11
22
Minimum Active-to-Precharge delay (tRASmin)(ns)
37.5ns
36ns
2C
20
23
Minimum Active-to-Active/Refresh delay (tRCmin)(ns)
50.625ns
49.125ns
95
89
24
Minimum refresh recovery delay (tRFCmin) LSB
(Combo bytes 24,25)
70
25
Minimum refresh recovery delay (tRFCmin) MSB
110ns
03
26
Minimum internal Write-to-Read command delay (tWTRmin)
7.5ns
3C
27
Minimum internal Read-to-Precharge command delay
(tRTPmin)
7.5ns
3C
28
Minimum four active window delay (tFAWmin) LSB
(Combo byte 28, 29)
01
00
29
Minimum four active window delay (tFAWmin) MSB
37.5ns
30ns
2C
F0
30
SDRAM device output drivers suported
RZQ / 7,
DLL-Off Mode Support,
82
31
SDRAM device thermal and refresh options
Extended Temperature Range,
ASR,
05
32
Module thermal sensor
Non Thermal Sensor Support
00
33
SDRAM device type
Standard Monolithic Device
00
34-59
Reserved
Undefined
--
60
Module height (nominal)
29 ＜ height ≦ 30 mm
0F