DS2229

Features:

    Organized as a high density 512k x 16 bitStikTM
    Fast access time of 85 ns
    Unlimited write cycles
    Employs popular JEDEC standard 80-positionSIMM connector
    Full ±10% operating range
    Read cycle time equals write cycle time
    Ultra-low standby current < 10 µA
    Suitable for battery-backed applications


Pinout




Specifications

Power Supply Voltage .......................... -0.3V to +7.0V
Input, Input/Output Voltage  .......... -0.3 to V_CC +0.3V
Operating Temperature ............................. 0 to 70
Storage Temperature ......................... -55 to +125


Description

The DS2229 is an 8,388,608-bit low-power fully static Random Access Memory organized as a 524,888word by 16 bits using CMOS technology. The device employs the popular JEDEC standard 80-pin SIMMconnection scheme with no additional circuitry required. The device operates from a single power supplywith a voltage input of 4.5 to 5.5 volts. The Chip Enable inputs (CE0 , CE1 , CE2 , CE3 ) are used fordevice selection and can be used in order to achieve the minimum standby current mode which facilitatesbattery backup. The device provides a fast access time of 85 ns. The DS2229 maintains TTL levels overinput voltage range 4.5V to 5.5V. The DS2229 is JEDEC pin compatible (see Figure 1) with flashEEPROM memory SIMM boards of similar density.