HYM328020GD- Datasheet, PDF (2/6 Pages) Siemens Semiconductor Group – 8M x 32-Bit Dynamic RAM Module SMALL OUTLINE MEMORY MODULE

HYM328020GD-50/-60
8M x 32 SO-DIMM
The HYM 328020GD -50/-60 is a 32 MByte DRAM module organized as 8 388 608 words by 32-bit
in a 72-pin, dual read-out, small outline package comprising four HYB 3165160T 4M × 16 DRAMs
in 500 mil wide TSOPII-54 - packages mounted together with four 0.2 µF ceramic decoupling
capacitors on a PC board. Each HYB 3165800T is described in the data sheet and is fully
electrically 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 density and speed of the module can be detected by the use of presence detect pins.
These modules are ideal for portable systems applications where high memory capacity is needed.
Ordering Information
Type
HYM 328020GD -50
HYM 328020GD -60
Ordering Code
on request
on request
Package
L-DIM-72-2
L-DIM-72-2
Descriptions
50 ns DRAM module
60 ns DRAM module
Pin Names
A0-A11
A0-A9
DQ0 - DQ31
RAS0 - RAS3
CAS0 - CAS3
WE
Vcc
Vss
PD1 - PD7
N.C.
Row Address Input
Column Address Inputs
Data Input/Output
Row Address Strobe
Column Address Strobe
Read / Write Input
Power (+3.3 Volt)
Ground
Presence Detect Pins
No Connection
Presence-Detect and ID-pin Thruth Table *):
Module
HYM 328020GD -50
HYM 328020GD -60
PD1 PD2 PD3 PD4 PD5 PD6 PD7
NC NC VSS VSS VSS VSS NC
NC NC VSS VSS NC NC NC
note: PD1 .. PD4 : configuration
PD5 .. PD6 : speed
PD7
: refresh mode (NC = normal refresh)
*) according to JEDEC letter ballot JC-42.5-95 Item #646/651
Semiconductor Group
196