M58WR064EB80ZB6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M58WR064EB80ZB6

64 Mbit (4Mb x 16, Multiple Bank, Burst) 1.8V Supply Flash Memory

STMicroelectronics 

M58WR064ET, M58WR064EB

other modes, WAIT is always asserted (except for

Read Array mode).

See Table 21, Synchronous Read AC Character-

istics and Figure 12, Synchronous Burst Read AC

Waveform for details.

Single Synchronous Read Mode

Single Synchronous Read operations are similar

to Synchronous Burst Read operations except that

only the first data output after the X latency is valid.

Synchronous Single Reads are used to read the

Electronic Signature, Status Register, CFI, Block

Protection Status, Configuration Register Status

or Protection Register. When the addressed bank

is in Read CFI, Read Status Register or Read

Electronic Signature mode, the WAIT signal is al-

ways asserted.

See Table 21, Synchronous Read AC Character-

istics and Figure 13, Single Synchronous Read AC

Waveform for details.

DUAL OPERATIONS AND MULTIPLE BANK ARCHITECTURE

The Multiple Bank Architecture of the

M58WR064E provides flexibility for software de-

velopers by allowing code and data to be split with

4Mbit granularity. The Dual Operations feature

simplifies the software management of the device

and allows code to be executed from one bank

while another bank is being programmed or

erased.

The Dual operations feature means that while pro-

gramming or erasing in one bank, Read opera-

tions are possible in another bank with zero

latency (only one bank at a time is allowed to be in

Program or Erase mode). If a Read operation is re-

quired in a bank which is programming or erasing,

the Program or Erase operation can be suspend-

ed. Also if the suspended operation was Erase

then a Program command can be issued to anoth-

er block, so the device can have one block in

Erase Suspend mode, one programming and oth-

er banks in Read mode. Bus Read operations are

allowed in another bank between setup and con-

firm cycles of program or erase operations. The

combination of these features means that read op-

erations are possible at any moment.

Tables 11 and 12 show the dual operations possi-

ble in other banks and in the same bank. For a

complete list of possible commands refer to Ap-

pendix D, Command Interface State Tables.

Table 11. Dual Operations Allowed In Other Banks

Commands allowed in another bank

Status of bank

Read

Array

Read

Status

Register

Read

CFI

Query

Read

Electronic Program

Signature

Block

Erase

Idle

Yes

Yes

Yes

Yes

Yes

Yes

Programming

Yes

Yes

Yes

Yes

–

–

Erasing

Yes

Yes

Yes

Yes

–

–

Program Suspended

Yes

Yes

Yes

Yes

–

–

Erase Suspended

Yes

Yes

Yes

Yes

Yes

–

Program/ Program/

Erase

Erase

Suspend Resume

Yes

Yes

Yes

–

Yes

–

–

Yes

–

Yes

Table 12. Dual Operations Allowed In Same Bank

Commands allowed in same bank

Status of bank

Read

Array

Read

Status

Register

Read

CFI Query

Read

Electronic

Signature

Program

Block

Erase

Program/ Program/

Erase

Erase

Suspend Resume

Idle

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Programming

–(2)

Yes

Yes

Yes

–

–

Yes

–

Erasing

–(2)

Yes

Yes

Yes

–

–

Yes

–

Program Suspended Yes(1)

Yes

Yes

Yes

–

–

–

Yes

Erase Suspended

Yes(1)

Yes

Yes

Yes

Yes(1)

–

–

Yes

Note: 1. Not allowed in the Block or Word that is being erased or programmed.

2. The Read Array command is accepted but the data output is not guaranteed until the Program or Erase has completed.

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