M58BF008

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A Command Interface decodes the Instructions

written to the memory to access or modify the

memory content, to toggle the enable/disable of

read access to the Overlay block, to toggle the

burst Wrap/No-wrap or to toggle the Synchronous

or Asynchronous Read mode. A Program/Erase

Controller (P/E.C.) executes the algorithms taking

care of the timings necessary for program and

erase operations. The P/E.C. also takes care of

verification to unburden the system microproces-

sor, while a Status Register tracks the status of

each operation.

The following Instructions are executed by the

memory in either Asynchronous or Synchronous

mode.

Access or modify memory content:

- Read Array

- Read or Clear Status Register

- Read Electronic Signature

- Erase Main memory block or Overlay block

- Program Main memory or Overlay memory

- Program Erase Suspend or Resume

Toggle:

– Asynchronous/Synchronous Read

– Overlay Block Read Enable/Disable

– Burst Wrap/No-wrap

The M58BF008 devices are offered in PQFP80

and LBGA80 1.0mm ball pitch packages.

Table 1. Signal Names

A0-A17

Address Inputs

DQ0-DQ31

Data Input/Output

CLK

System Clock

RP

Reset/Power-down

E

Chip Enable

G

Output Enable

GD

Output Disable

W

Write Enable

LBA

Load Burst Address

WR

Write/Read

BAA

Burst Address Advance

Supply Voltage

Supply Voltage for Input/Output

Buffers

Program Supply Voltage

Ground

Input/Output Ground

NC

Not Connected Internally

DU

Don’t Use as Internally Connected

Note: 1. Stresses above those listed in the Table ”Absolute Maximum Ratings” may cause permanent damage to the device.

Symbol

Parameter

Value

Unit

Ambient Operating Temperature

–40 to 125

°C

Temperature Under Bias

–40 to 125

°C

Storage Temperature

–55 to 150

°C

Input Output Voltage

V

Supply Voltage

–0.6 to 7

V

Program Voltage

–0.6 to 13.5

V

gramming and erasure of the memory blocks and,

in addition, it prevents reading of the Overlay

both in-system program/erase and read access to

the Overlay block. For a limited time and number

raised to 12V to provide fast program and erase

times.