M58PR512LE datasheet(116/119 Pages) STMICROELECTRONICS

116 / 119 page

Command interface state tables

M58PR256LE, M58PR512LE, M58PR001LE

116/119

Note:

WP = Word Program, BP = Buffer program, cmd = command, SR = Status Register, pgrm =

program, IS = Illegal state, PS = Program suspend, ES = Erase suspend, CI = Command

Interface, CR = Configuration Register, BEFP = Buffer Enhanced Factory Program, P/E. C.

= Program/Erase Controller, WA0 = Address in a block different from first BEFP address,

ECR = Enhanced Configuration Register.

The output state shows the type of data that appears at the outputs if the bank address is

the same as the command address. A bank can be placed in Read Array, Read Status

Each bank remains in its last output state until a new command is issued to that bank. The

next state does not depend on the bank output state.

At Power-up, all banks are in Read Array mode. Issuing a Read Array command to a busy

bank results in undetermined data output.

The Clear Status Register command clears the Status Register error bits except when the

P/EC is busy or suspended.

BEFP is allowed only when Status Register bit SR0 is reset to ‘0’. BEFP is busy if the block

address is the first BEFP address. Any other commands are treated as data.

Table 56.

Command interface states - modify table, next output 2

Current Chip State

command input to chip and resulting chip next state

Clear SR

Read ID

Lock,

CR, ECR

Setup

Lock

EFA

Setup

Blank

Check

OTP

Setup

Lock

Confirm

Lock-

down

Confirm

Write

CR/

ECR

Confirm

Illegal

cmd or

BEFP

Data

50h

90h 98h

60h

64h

BCh

C0h

01h

2Fh

03h 04h

others

BEFP Setup,

BEFP program and verify

busy,

Erase Setup,

Erase EFA setup

OTP Setup,

BP Confirm,

WP setup,

WP setup in ES,

BP confirm in ES,

blank check setup

status read

EFA block WP setup,

EFA block program setup

in ES

EFA block status read

Lock/CR/ECR setup,

Lock/CR/ECR setup in ES

status read

array

read

status

read

EFA block lock setup, EFA

block lock setup in ES

EFA block status read

array

read

EFA

block

status

read

OTP busy

output

state

does not

change

ID read

status

read

EFA

block

status

read

status read

output state does not change

output

state

does not

change

ready, ES, BP suspend, WP

busy, erase busy,

BP busy, blank check busy,

BP busy in ES,

WP suspend, WP busy in

ES, PS in ES,

BP suspend in ES

BP setup,

BP load 1,

BP load 2,

output state does not change

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