Siemens HYM324020GS-60, HYM324020GS-70, HYM324020S-60, HYM324020S-70 Datasheet
Semiconductor Group 571 09.94
4M x 32-Bit Dynamic RAM Module
Preliminary Information
HYM 324020S/GS-60/-70
• 4 194 304 words by 32-bit organization
(alternative 8 388 608 words by 16-bit)
• Fast access and cycle time
60 ns access time
110 ns cycle time (-60 version)
70 ns access time
130 ns cycle time (-70 version)
• Fast page mode capability
40 ns cycle time (-60 version)
45 ns cycle time (-70 version)
• Single + 5 V (± 10 %) supply
• Low power dissipation
max. 4840 mW active
(HYM 324020S/GS-60)
max. 4400 mW active
(HYM 324020S/GS-70)
CMOS – 44 mW standby
TTL – 88 mW standby
Ordering Information
Type Ordering Code Package Description
HYM 324020S-60 Q67100-Q979 L-SIM-72-12 DRAM Module
(access time 60 ns)
HYM 324020S-70 Q67100-Q980 L-SIM-72-12 DRAM Module
(access time 70 ns)
HYM 324020GS-60 Q67100-Q2005 L-SIM-72-12 DRAM Module
(access time 60 ns)
HYM 324020GS-70 on request L-SIM-72-12 DRAM Module
(access time 70 ns)
• CAS-before-RAS refresh
RAS-only-refresh
Hidden-refresh
• 8 decoupling capacitors mounted on
substrate
• All inputs, outputs and clocks fully TTL
compatible
• 72 pin Single in-Line Memory Module with
22.86 mm (900 mil) height
• Utilizes eight 4Mx4-DRAMs in 300mil wide
SOJ-packages
• 2048 refresh cycles / 32 ms
• Tin-Lead contact pads (S - version)
• Gold contact pads (GS - version)
Semiconductor Group 572
HYM 324020S/GS-60/-70
4M x 32-Bit
The HYM 324020S/GS-60/-70 is a 16 M Byte DRAM module organized as 4 194 304 words by
32-bit in a 72-pin single-in-line package comprising eight HYB 5117400BJ 4M x 4 DRAMs in 300
mil wide SOJ-packages mounted together with eight 0.2 µF ceramic decoupling capacitors on a PC
board.
The HYM 324020S/GS-60/-70 can also be used as a 8 388 608 words by 16-bits dynamic RAM
module by means of connecting DQ0 and DQ16, DQ1 and DQ17, DQ2 and DQ18, …, DQ15 and
DQ31, respectively.
Each HYB 5117400BJ is described in the data sheet and is fully electrical tested and processed
according to SIEMENS standard quality procedure prior to module assembly. After assembly onto
the board, a further set of electrical tests is performed.
The speed of the module can be detected by the use of four presence detect pins.
The common I/O feature on the HYM 324020S/GS-60/-70 dictates the use of early write cycles.
Pin Definitions and Functions
Presence Detect Pins
Pin No. Functions
A0-A10 Address Inputs for
HYM 324020S/GS
DQ0-DQ31 Data Input/Output
CAS0 - CAS3 Column Address Strobe
RAS0, RAS2 Row Address Strobe
WE Read/Write Input
V
CC
Power (+ 5 V)
V
SS
Ground
PD Presence Detect Pin
N.C. No Connection
-60 -70
PD0
V
SS
V
SS
PD1 N.C. N.C.
PD2 N.C.
V
SS
PD3 N.C. N.C.
Semiconductor Group 573
HYM 324020S/GS-60/-70
4M x 32-Bit
Pin Configuration
(top view)
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