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HYS6472V4200GU Datasheet, PDF (11/15 Pages) Siemens Semiconductor Group – 3.3V 4M x 64/72-Bit 1 BANK SDRAM Module 3.3V 8M x 64/72-Bit 2 BANK SDRAM Module
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HYS64(72)V4200/8220GU
SDRAM-Modules
A serial presence detect storage device - E2PROM - is assembled onto the module. Information about the module
configuration, speed, etc. is written into the E2PROM device during module production using a serial presence
detect protocol ( I2C synchronous 2-wire bus)
SPD-Table for PC100 modules:
Byte#
Description
0 Number of SPD bytes
1 Total bytes in Serial PD
2 Memory Type
3 Number of Row Addresses (wit-
hout BS bits)
4 Number of Column Addresses
(for 16 SDRAM)
5 Number of DIMM Banks
6 Module Data Width
7 Module Data Width (cont’d)
8 Module Interface Levels
9 SDRAM Cycle Time at CL=3
10 SDRAM Access time from Clock
at CL=3
11 Dimm Config (Error Det/Corr.)
12 Refresh Rate/Type
13 SDRAM width, Primary
14 Error Checking SDRAM data
width
15 Minimum clock delay for back-to-
back random column address
16 Burst Length supported
17 Number of SDRAM banks
18 Supported CAS Latencies
19 CS Latencies
20 WE Latencies
21 SDRAM DIMM module attributes
22 SDRAM Device Attributes :Gene-
ral
23 Minimum Clock Cycle Time at
CAS Latency = 2
24 Maximum data access time from
Clock for CL=2
25 Minimum Clock Cycle Time at CL
=1
26 Maximum Data Access Time
from Clock at CL=1
27 Minimum Row Precharge Time
SPD Entry
Value
128
256
SDRAM
12
8
1/2
64
0
LVTTL
10.0 ns
6.0 ns
none
Self-Refresh,
15.6µs
x16
n/a / x8
tccd = 1 CLK
1, 2, 4, 8 & full
page
4
CL = 2 & 3
CS latency = 0
WL = 0
non buffered/
non reg.
Vcc tol +/- 10%
10.0 / 12.0ns
6.0 / 7.0ns
not supported
not supported
20 / 30 ns
4Mx64
-8
80
08
04
0C
08
01
40
00
01
A0
60
00
80
10
00
01
8F
04
06
01
01
00
06
A0
60
FF
FF
14
4Mx64
-8B
80
08
04
0C
08
01
40
00
01
A0
60
00
80
10
00
01
8F
04
06
01
01
00
06
C0
70
FF
FF
1E
Hex
4Mx72
-8
80
08
04
0C
8Mx64
-8
80
08
04
0C
08
08
01
02
48
40
00
00
01
01
A0
A0
60
60
02
00
80
80
10
10
08
00
01
01
8F
8F
04
04
06
06
01
01
01
01
00
00
06
06
A0
A0
60
60
FF
FF
FF
FF
14
14
8Mx64
-8B
80
08
04
0C
08
02
40
00
01
A0
60
00
80
10
00
01
8F
04
06
01
01
00
06
C0
70
FF
FF
1E
8Mx72
-8
80
08
04
0C
08
02
48
00
01
A0
60
02
80
10
08
01
8F
04
06
01
01
00
06
A0
60
FF
FF
14
Semiconductor Group
11
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