LE28F4001M View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LE28F4001M

4 MEG (524288 words × 8 bits) Flash Memory

SANYO -> Panasonic 

TSOP40 Standard

LE28F4001M, T, R-15/20

TSOP40 Reversed

Pin Functions

Symbol

A18 to A0

Pin

Address input

DQ7 to DQ0 Data input and output

CE

OE

WE

VCC

VSS

N.C.

Chip enable

Output enable

Write enable

Power supply

Ground

No connection

Functions

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.

Data is latched internally during a write cycle.

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

The device is active when CE is low.

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

Makes the data output buffers active.

OE is a low-active input.

Makes the write operation active.

WE is a low-active input.

Apply 5 V (±10%) to this pin.

These pins must be left open.

Function Logic

Mode

Read

Write

Standby or write inhibit

Write inhibit

Product identification

CE

OE

WE

A18 to A0

DQ7 to DQ0

VIL

VIL

VIH AIN

VIL

VIH

VIL AIN

VIH

X

XX

X

VIL

XX

X

X

VIH X

DOUT

DIN

High-Z

High-Z/DOUT

High-Z/DOUT

A18 to A10 = VIL, A8 to A1 = VIL, Manufacturer code (BF)

A9 = 12 V, A0 = VIL

VIL

VIL

VIH

A18 to A10 = VIL, A8 to A1 = VIL Device code (04)

A9 = 12 V, A0 = VIH

Command Settings

Command

Sector erase

Byte program

Reset

Read ID

Software data unprotect

Software data protect

Request

cycle

2

2

1

3

7

7

Setup command cycle

Operation

Address

Write

X

Write

X

Write

X

Write

X

See Figure 9.

See Figure 10.

Data

20H

10H

FFH

90H

Execute command cycle

Operation

Address

Data

Write

SA

D0H

Write

PA

PD

Read

(7)

(7)

SDP

N

N

Y

Y

No. 5239-3/14

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