# Dynamic RAM Modules (TM124MBJ36F/U & TM248NBJ36F/U)

## Overview
These are 4 MByte (TM124MBJ36F/U) and 8 MByte (TM248NBJ36F/U) DRAM modules utilizing 36-bit organization and designed for use with sockets. They are constructed using various DRAMs in SOJ packages mounted on a substrate with decoupling capacitors.

## Key Features
️· Capacities: 4MByte (TM124MBJ36F/U) & 8MByte (TM248NBJ36F/U)
️· Organization: 4 x 1048576 x 9 (TM124MBJ36F/U), 4 x 2097152 x 9 (TM248NBJ36F/U)
️· DRAMs Used: 16-Megabit and 4-Megabit DRAMs in SOJ packages
️· Module Type: 72-Pin Single In-Line Memory Module (SIMM)
️· Versions: Available in Gold-Tabbed and Tin-Lead Tabbed versions.
️· Operating Temperature: 0°C to 70°C

## Electrical Characteristics
️· Supply Voltage: 4.5V - 5.5V
️· Access Times: Vary based on speed grade (-60, -70, -80), ranging from 30ns to 80ns.
️· Refresh Interval: 16ms

## Timing Parameters
️· Detailed timing specifications for various cycles (read, write, RAS, CAS) are provided, varying by speed grade.

## Mechanical Dimensions
️· Detailed mechanical drawings and dimensions of the SIMM are available.

## Ordering Information
️· Various speed grades and tabbed versions are available for each capacity.
️· Device symbolization includes year, month, assembly site, and speed code.