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Part: HYM72V32656HLT8
Category:
Memory
-> DRAM
-> SDR SDRAM
-> Modules
-> 256 MB
Description: 32Mx64bits PC100 Sdram Unbuffered Dimm Based on 32Mx8 Sdram With Lvttl, 4 Banks & 8K Refresh
Company: Hynix Semiconductor
Datasheet: Download HYM72V32656HLT8 datasheet File size : 904 kB
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Datasheet text preview:
32Mx64bits PC100 SDRAM Unbuffered DIMM
based on 32Mx8 SDRAM with LVTTL, 4 banks & 8K Refresh HYM72V32656H(L)T8 Series DESCRIPTION
The HYM72V32656H(L)T8 Series are 32Mx64bits Synchronous DRAM Modules. The modules are composed of eight 32Mx8bits CMOS Synchronous DRAMs in 400mil 54pin TSOP-II package, one 2Kbit EEPROM in 8pin TSSOP package on a 168pin glass-epoxy printed circuit board. One 0.22uF and one 0.0022uF decoupling capacitors per each SDRAM are mounted on the PCB. The HYM72V32656H(L)T8 Series are Dual In-line Memory Modules suitable for easy interchange and addition of 256Mbytes memory. The HYM72V32656H(L)T8 Series are fully synchronous operation referenced to the positive edge of the clock . All inputs and outputs are synchronized with the rising edge of the clock input. The data paths are internally pipelined to achieve very high bandwidth.
FEATURES
· 1.15 (29.21mm) PCB Height · 168-Pin Unbuffered DIMM with Single Sided · One 0.33µF and one 0.1µF decoupling capacitors adopted · Serial Presence Detect with Serial EEPROM · Meets all the other JEDEC specifications · Single 3.3V±0.3V power supply · All device pins are LVTTL compatible · 8192 refresh cycles every 64ms · Fully synchronous ; all inputs referenced to positive edge of system clock · Dual or Quad internal banks with single pulsed /RAS · Auto precharge/precharge all banks by A10 flag · Possible to assert random column address every clock cycle · Interleaved auto refresh mode · Programmable burst lengths and sequences - 1,2,4,8,full page for Sequential type - 1,2,4,8 for Interleave type · Programmable /CAS latency ; 2,3 clocks · Support clock suspend/power down mode by CKE0 · Data mask function by DQM · Mode register set programming · Burst termination command · Self refresh provides minimum power, full internal refresh control
ORDERING INFORMATION
Part No.
HY M72V 32656HT 8-P HY M72V 32656HT 8-S HYM72V32656HLT8-P HYM72V32656HLT8-S
Cloc k Frequency
100M Hz 100M Hz 100M Hz 100M Hz
Internal Ba nk
Ref.
Power
Norm al
SDRAM Package
Plating
4 Banks
8K Low Power
TSOP-II
G old
This document is a general product description and is subject to change without notice. Hynix Semiconductor Inc. does not assume any responsibility for use of circuits described. No patent licenses are implied. Rev. 0.3/Mar. 02 1
PC100 SDRAM Unbuffered DIMM
HYM72V32656H(L)T8 Series
PIN DESCRIPTION
PIN CK 0~CK3 CK E0 /S0 ~ /S2 BA0, BA1 A0 ~ A12 /RAS, /CAS, /WE DQM0~DQM7 DQ0 ~ DQ63 V CC VSS S CL S DA SA0~2 WP NC PIN NAME Clock Inputs Clock Enable Chip Select SDRAM Bank Address Address Row Address Strobe, Column Address Strobe, Write Enable Data Input/Output Mask Data Input/Output Power Supply (3.3V) Ground SPD Clock Input SPD Data Input/Output SPD Address Input Write Protect for SPD No Connection DESCRIPTION The system clock input. All other inputs are registered to the SDRAM on the rising edge of CLK Controls internal clock signal and when deactivated, the SDRAM will be one of the states among power down, suspend or self refresh Enables or disables all inputs except CK, CKE and DQM Selects bank to be activated during /RAS activity Selects bank to be read/written during /CAS activity Row Address : RA0 ~ RA12, Column Address : CA0 ~ CA9 Auto-precharge flag : A10 /RAS, /CAS and /WE define the operation Refer function truth table for details Controls output buffers in read mode and masks input data in write mode Multiplexed data input / output pin Power supply for internal circuits and input buffers G ro u n d Serial Presence Detect Clock input Serial Presence Detect Data input/output Serial Presence Detect Address Input Write Protect for Serial Presence Detect on DIMM No connection
Rev. 0.3/Mar. 02
2
PC100 SDRAM Unbuffered DIMM
HYM72V32656H(L)T8 Series
PIN ASSIGNMENTS
FRONT SIDE PIN NO.
1 2 3 4 5 6 7 8 9 10
BACK SIDE PIN NO.
85 86 87 88 89 90 91 92 93 94
FRONT SIDE PIN NO.
41 42 43 44 45 46 47 48 49 50 51 52
BACK SIDE PIN NO.
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
NAM E
VSS DQ 0 DQ 1 DQ 2 DQ 3 VCC DQ 4 DQ 5 DQ 6 DQ 7
NAM E
VSS DQ32 DQ33 DQ34 DQ35 V CC DQ3 6 DQ37 DQ38 DQ39
NAM E
V CC CK0 VSS NC /S2 DQM2 DQM 3 NC V CC NC NC NC NC VSS DQ16 DQ17 DQ18 DQ19 V CC DQ20 NC NC NC VSS DQ21 DQ22 DQ23 V CC DQ24 DQ25 DQ26 DQ27 V CC DQ28 DQ29 DQ30 DQ31 VSS CK2 NC WP S DA SCL VCC
N AME
CK 1 A12 VSS CKE0 /S3 DQM6 DQM7 NC V CC NC NC NC NC VSS DQ48 DQ49 DQ50 DQ51 V CC DQ52 NC NC NC VSS DQ53 DQ54 DQ55 V CC DQ56 DQ57 DQ58 DQ59 VCC DQ60 DQ61 DQ62 DQ63 VSS CK 3 NC SA0 SA1 SA2 VCC
Architecture Key
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 DQ 8 VSS DQ 9 DQ10 DQ11 DQ12 DQ13 VCC DQ14 DQ15 NC NC VSS NC NC VCC /WE DQM0 DQM1 /S0 NC VSS A0 A2 A4 A6 A8 A10/AP BA1 VCC 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 DQ40 VSS DQ41 DQ42 DQ43 DQ44 DQ45 V CC DQ46 DQ47 NC NC VSS NC NC V CC /CAS DQM4 DQM5 /S1 /RAS VSS A1 A3 A5 A7 A9 BA0 A11 V CC
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
Voltage Key
Rev. 0.3/Mar. 02
3
Others parts begin by hy
HY-1 HY-2 HY-3 HY-4 HY-5 HY-6 HY-7 HY-8 HY-9 HY-10 HY-11 HY-12 HY-13 HY-14 HY-15 HY-16 HY-17 HY-18 HY-19 HY-20 HY-21 HY-22 HY-23 HY-24 HY-25 HY-26 HY-27 HY-28 HY-29 HY-30 HY-31 HY-32 HY-33 HY-34
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