Block Diagram

Pin Assignments

Pin Functions

No. 5129-2/14

LE28C1001M, T-90/12/15

Symbol

Pin

Function

A16 to A0

Address input

Supply the memory address to these pins.

The address is latched internally during a write cycle.

These pins output data during a read cycle and input data during a write cycle.

DQ7 to DQ0

Data input and output

Data is latched internally during a write cycle.

Outputs go to the high-impedance state when either OE or CE is high.

CE

Chip enable

The device is active when CE is low.

When CE is high, the device becomes unselected and goes to the standby state.

OE

Output enable

Makes the data output buffers active.

OE is an active-low input.

WE

Write enable

Makes the write operation active.

WE is an active-low input.

Power supply

Apply 5 V (±10%) to this pin.

Ground

N.C.

No connection

These pins must be left open.

A05759

A05760