M58LW064 Ver la hoja de datos (PDF) - STMicroelectronics
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M58LW064 Datasheet PDF : 53 Pages
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M58LW064A, M58LW064B
BUS OPERATIONS
The following operations can be performed using
the appropriate bus configuration:
Asynchronous
– Read Array
– Read Electronic Signature
– Read Block Protection
– Read Status Register
– Read Query
– Write
– Output Disable
– Standby
– Reset/Power-down
Synchronous
– Address Latch
– Burst Read
– Burst Read Suspend
– Burst Read Interrupt
– Burst Read Resume
– Burst Address Advance
See Tables 3, 4, 5, 6 and 7.
COMMAND INTERFACE
Instructions, made up of Commands written in Cy-
cles, can be given to the Program/Erase Controller
(P/E.C.) by writing to the Command Interface
(C.I.). At power-up or on exit from power down or
if VDD is lower than VLKO, the Command Interface
is reset to Read Array. Any incorrect command will
reset the device to Read Array. Any improper com-
mand sequence will cause the Status Register to
report the error condition and the device will de-
fault to Read Status Register.
The internal Program/Erase Controller (P/E.C.)
automatically handles all timing and verification of
the Program and Erase operations. The Status
Register information P/ECS on DQ7 can be read
at any time, during programming or erase, to mon-
itor the progress of the operation.
Table 3. Asynchronous Bus Operations (1)
Operation
E
G
W
RP
L
DQ0-DQ31
Read Array
VIL
VIL
VIH
High
X
Data Output
Read Electronic Signature or
Block Protection Status
VIL
VIL
VIH
High
X
Manufacturer or Device Code
Output Block Protection Status
Read Status
P/E.C. Active
VIL
VIL
VIH
High
X
Status Register Output
Read Query
VIL
VIL
VIH
High
X
CFI Query Output
Write
VIL
VIH
VIL
High
VIL
Data Input
Output Disable
VIL
VIH
VIH
High
X
High Z
Standby
VIH
X
X
High
X
High Z
Reset/Power-down
X
X
X
VIL
X
High Z
Note: 1. X = Don’t Care VIL or VIH. High = VIH or VHH.
2. ? = need to check with designers - X or VIL???
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