2 banks Synchronous Dynamic RAM Registered
Module, mounted 36 pieces of 256M bits SDRAM
sealed in TCP package. This module provides high
density and large quantities of memory in a small
space without utilizing the surface mounting
technology. Decoupling capacitors are mounted on
power supply line for noise reduction.
Note: Do not push the cover or drop the modules in
order to protect from mechanical defects, which
would be electrical defects.
Features
• Fully compatible with 8 bytes DIMM: JEDEC
standard outline
• 168-pin socket type dual in line memory module
(DIMM)
PCB height: 30.48mm (1.20inch)
Lead pitch: 1.27mm
• 3.3V power supply
• Clock frequency: 133MHz (max.)
• LVTTL interface
• Data bus width: × 72 ECC
• Single pulsed /RAS
• 4 Banks can operates simultaneously and
independently
• Burst read/write operation and burst read/single write
operation capability
• Programmable burst length (BL): 1, 2, 4, 8
• 2 variations of burst sequence
Sequential
Interleave
• Programmable /CAS latency (CL): 2, 3
• Registered inputs with one clock delay
• Byte control by DQMB
• Refresh cycles: 8192 refresh cycles/64ms
• 2 variations of refresh
Auto refresh
Self refresh
• 1 piece of PLL clock driver, 3 pieces of register driver
and 1 piece of serial EEPROM (2k bits) for Presence
Detect (SPD) on PCB.
Document No. E0106E30 (Ver. 3.0)
Date Published June 2002 (K) Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2001-2002
EBS11RC4ACNA
Ordering Information
Part number
EBS11RC4ACNA -7A
EBS11RC4ACNA -75*
Note: 1.100MHz operation at /CAS latency = 2.
2. Please refer to the TSOP products EDS25XXACTA datasheet (E0277E) for detail information.
Pin Configurations
Pin No. Pin name Pin No. Pin name Pin No. Pin name Pin No. Pin name
1 VSS 43 VSS 85 VSS 127 VSS
2 DQ0 44 NC 86 DQ32 128 CKE0
3 DQ1 45 /CS2 87 DQ33 129 /CS3
4 DQ2 46 DQMB2 88 DQ34 130 DQMB6
5 DQ3 47 DQMB3 89 DQ35 131 DQMB7
6 VDD 48 NC 90 VDD 132 NC
7 DQ4 49 VDD 91 DQ36 133 VDD
8 DQ5 50 NC 92 DQ37 134 NC
9 DQ6 51 NC 93 DQ38 135 NC
10 DQ7 52 CB2 94 DQ39 136 CB6
11 DQ8 53 CB3 95 DQ40 137 CB7
12 VSS 54 VSS 96 VSS 138 VSS
13 DQ9 55 DQ16 97 DQ41 139 DQ48
14 DQ10 56 DQ17 98 DQ42 140 DQ49
15 DQ11 57 DQ18 99 DQ43 141 DQ50
16 DQ12 58 DQ19 100 DQ44 142 DQ51
17 DQ13 59 VDD 101 DQ45 143 VDD
18 VDD 60 DQ20 102 VDD 144 DQ52
19 DQ14 61 NC 103 DQ46 145 NC
20 DQ15 62 NC 104 DQ47 146 NC
21 CB0 63 NC 105 CB4 147 REGE
22 CB1 64 VSS 106 CB5 148 VSS
23 VSS 65 DQ21 107 VSS 149 DQ53
24 NC 66 DQ22 108 NC 150 DQ54
25 NC 67 DQ23 109 NC 151 DQ55
26 VDD 68 VSS 110 VDD 152 VSS
27 /WE 69 DQ24 111 /CAS 153 DQ56
28 DQMB0 70 DQ25 112 DQMB4 154 DQ57
29 DQMB1 71 DQ26 113 DQMB5 155 DQ58
Clock frequency
MHz (max.)
133
1
133
/CAS latency Package
2, 3
3
1 pin 10 pin11 pin40 pin 41 pin84 pin
85 pin 94 pin 95 pin 124 pin 125 pin168 pin
168-pin DIMM Gold
Contact pad Mounted devices
256M bits SDRAM
TCP*2
Data Sheet E0106E30 (Ver. 3.0)
2
EBS11RC4ACNA
Pin No. Pin name Pin No. Pin name Pin No. Pin name Pin No. Pin name
30 /CS0 72 DQ27 114 /CS1 156 DQ59
31 NC 73 VDD 115 /RAS 157 VDD
32 VSS 74 DQ28 116 VSS 158 DQ60
33 A0 75 DQ29 117 A1 159 DQ61
34 A2 76 DQ30 118 A3 160 DQ62
35 A4 77 DQ31 119 A5 161 DQ63
36 A6 78 VSS 120 A7 162 VSS
37 A8 79 CLK2 121 A9 163 CLK3
38 A10 (AP) 80 NC 122 BA0 164 NC
39 BA1 81 NC 123 A11 165 SA0
40 VDD 82 SDA 124 VDD 166 SA1
41 VDD 83 SCL 125 CLK1 167 SA2
42 CLK0 84 VDD 126 A12 168 VDD
Pin Description
Pin name Function
Address input
A0 to A12
BA0, BA1 Bank select address
DQ0 to DQ63 Data input/output
CB0 to CB7 Check bit (Data input/output)
/CS0 to /CS3 Chip select input
/RAS Row enable (/RAS) input
/CAS Column enable (/CAS) input
/WE Write enable input
DQMB0 to DQMB7 Byte data mask
CLK0 to CLK3 Clock input
CKE0 Clock enable input
REGE*1 Register / Buffer enable
SDA Data input/output for serial PD
SCL Clock input for serial PD
SA0 to SA2 Serial address input
VDD Primary positive power supply
VSS Ground
NC No connection
Note: 1. REGE ≥ VIH: Register mode.
REGE ≤ VIL: Buffer mode.
Row address A0 to A12
Column address A0 to A9, A11
Data Sheet E0106E30 (Ver. 3.0)
3
EBS11RC4ACNA
Serial PD Matrix*1
Byte No. Function described Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value Comments
0
1 Total SPD memory size 0 0 0 0 1 0 0 0 08H 256 byte
2 Memory type 0 0 0 0 0 1 0 0 04H SDRAM
3 Number of row addresses bits 0 0 0 0 1 1 0 1 0DH 13
4 Number of column addresses bits 0 0 0 0 1 0 1 1 0BH 11