Semiconductor Group

592

The HYM 361120/40S/GS-60/-70 is a 4 MByte DRAM module organized as 1 048 576 words by

36-bit in a 72-pin single-in-line package comprising four HYB 511000BJ 1M

× 1 DRAMs and eight

HYB 514400BJ 1M

× 4 DRAMs in 300 mil wide SOJ-packages mounted together with twelve

0.2

µF ceramic decoupling capacitors on a PC board.

The HYM 361120/40S/GS-60/-70 can also be used as a 2 097 152 words by 18-bits dynamic RAM

module by means of connecting DQ0 and DQ18, DQ1 and DQ19, DQ2 and DQ20, …, DQ17 and

DQ35, respectively.

Each HYB 511000BJ and HYB 514400BJ 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 speed of the module can be detected by the use of four presence detect pins.

The common I/O feature on the HYM 361120/40S/GS-60/-70 dictates the use of early write cycles.

Pin Definitions and Functions

Presence Detect Pins

Pin No.

Function

A0-A9

Address Inputs

DQ0-DQ35

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

V

SS

V

SS

PD2

N.C.

V

SS

PD3

N.C.

N.C.

HYM 361120/40S/GS-60/-70

1M

× 36-Bit