M59PW064 datasheet(4/24 Pages) STMICROELECTRONICS

4 / 24 page

M59PW064

4/24

SUMMARY DESCRIPTION

The M59PW064 is a 64Mbit (4Mbx16), Mask-

ROM pin-out compatible, non-volatile LightFlash

memory,

that

can

read,

erased

and

reprogrammed.

Read

operations

can

performed using a single low voltage (2.7 to 3.6V)

supply. Program and Erase operations require an

additional VPP (11.4 to 12.6V) power supply. On

power-up the memory defaults to its Read mode

where it can be read in the same way as a ROM or

EPROM.

The memory is divided into 32 uniform blocks that

can be erased independently so it is possible to

preserve valid data while old data is erased (see

Table 2., Block Addresses). Program and Erase

commands are written to the Command Interface

of the memory. An on-chip Program/Erase Con-

troller (P/E.C.) simplifies the process of program-

ming or erasing the memory by taking care of all of

the special operations that are required to update

the memory contents.

The M59PW064 features an innovative command,

Multiple Word Program, that is used to program

large streams of data. It greatly reduces the total

programming time when a large number of Words

are written to the memory at any one time. Using

this command the entire memory can be pro-

grammed in 8s, compared to 36s using the stan-

dard Word Program.

The end of a program or erase operation can be

detected and any error conditions identified. The

command set required to control the memory is

consistent with JEDEC standards.

Chip Enable and Output Enable signals control the

bus operation of the memory. They allow simple

connection to most microprocessors, often without

additional logic.

The memory is offered in SO44 and TSOP48 (12

x 20mm) packages. The memory is supplied with

all the bits set to ’1’).

Figure 2. Logic Diagram

Table 1. Signal Names

AI07230

A0-A21

DQ0-DQ15

VCC

M59PW064

VSS

VPP

A0-A21

Address Inputs

DQ0-DQ15

Data Inputs/Outputs

Chip Enable

Output Enable

VCC

Supply Voltage read

VPP

Supply Voltage program erase

VSS

Ground

Not Connected Internally

M59PW064 Datasheet(PDF) 4 Page - STMicroelectronics

M59PW064 Datasheet(HTML) 4 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL