M58WR032FB60ZB6 STMICROELECTRONICS [STMicroelectronics], M58WR032FB60ZB6 Datasheet - Page 33

• Manufacturer Part Number: M58WR032FB60ZB6
• Description: 32 Mbit (2Mb x 16, Multiple Bank, Burst) 1.8V Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

DUAL OPERATIONS AND MULTIPLE BANK ARCHITECTURE
The
M58WR032FT/B provides flexibility for software
developers by allowing code and data to be split
with 4Mbit granularity. The Dual Operations fea-
ture simplifies the software management of the de-
vice 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-
Table 11. Dual Operations Allowed In Other Banks
Table 12. Dual Operations Allowed In Same Bank
Note: 1. Not allowed in the Block or Word that is being erased or programmed.
Idle
Programming
Erasing
Program Suspended
Erase Suspended
Idle
Programming
Erasing
Program Suspended
Erase Suspended
Status of bank
Status of bank
2. The Read Array command is accepted but the data output is not guaranteed until the Program or Erase has completed.
Multiple
Bank
Array
Yes
Yes
Read
Array
Read
Yes
–
–
Yes
Yes
Yes
Yes
Yes
(2)
(2)
(1)
(1)
Architecture
Register
Register
Status
Status
Read
Read
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CFI Query
of
Query
Read
Read
Yes
Yes
Yes
Yes
Yes
CFI
Yes
Yes
Yes
Yes
Yes
Commands allowed in another bank
Commands allowed in same bank
the
Electronic
Signature
Electronic
Signature
Read
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
ble in other banks and in the same bank. For a
complete list of possible commands refer to
PENDIX D., COMMAND INTERFACE STATE TA-
BLES.
Read
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
11
Program
Program
Yes
and
Yes
Yes
Yes
–
–
–
–
–
–
(1)
12
M58WR032FT, M58WR032FB
show the dual operations possi-
Block
Erase
Block
Erase
Yes
Yes
–
–
–
–
–
–
–
–
Program/
Suspend
Program/
Suspend
Erase
Erase
Yes
Yes
Yes
Yes
Yes
Yes
–
–
–
–
Program/
Program/
Resume
Resume
Erase
Erase
Yes
Yes
Yes
Yes
Yes
Yes
–
–
–
–
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AP-