28F640W30 NUMONYX [Numonyx B.V], 28F640W30 Datasheet - Page 48

• Manufacturer Part Number: 28F640W30
• Description: Numonyx Wireless Flash Memory (W30)
• Manufacturer: NUMONYX [Numonyx B.V]

9.0
9.1
Table 17: Bus Operations Summary
9.1.1
Datasheet
48
Read
Write
Output Disable
Standby
Reset
Notes:
1.
2.
3.
4.
Bus Operation
WAIT is valid only during synchronous array-read operations.
Refer to the
operation.
X = Don’t Care (H or L).
RST# must be at V
Asynchronous
Synchronous
Burst Suspend
Flash Device Operations
This chapter provides an overview of flash device operations. The W30 flash memory
device family includes an on-chip Write State Machine (WSM) to manage block erase
and program algorithms. The WSM Command User Interface (CUI) allows minimal
processor overhead with RAM-like interface timings.
Bus Operations
Read
The W30 flash memory device has several read configurations:
Several read modes are available in each partition:
All partitions support the synchronous burst mode that internally sequences addresses
with respect to the input CLK to select and supply data to the outputs.
• Asynchronous page mode read.
• Synchronous burst mode read — outputs four, eight, sixteen, or continuous words,
• Read-array mode: read accesses return flash memory array data from the
• Read identifier mode: reads return manufacturer and device identifier data,
• Read query mode: reads return the flash device CFI data. CFI information can be
• Read status register mode: reads return status register data from the addressed
Table 19, “Bus Cycle Definitions” on page 52
from main blocks and parameter blocks.
addressed locations.
block lock status, and protection register data. Identifier information can be
accessed starting at a 4-Mbit partition base addresses; the flash memory array is
not accessible in read identifier mode.
accessed starting at a 4-Mbit partition base addresses; the flash memory array is
not accessible in read query mode.
partition. The array data for that partition is not accessible. A system processor can
check the status register to determine the state of an addressed partition, or to
monitor program and erase progress.
SS
RST#
± 0.2 V to meet the maximum specified power-down current.
V
V
V
V
V
V
V
IH
IH
IH
IH
IH
IH
IL
Running
Halted
CLK
X
X
X
X
X
ADV#
X
X
X
X
L
L
L
CE#
H
X
L
L
L
L
L
OE#
H
H
H
L
X
X
L
for valid DQ[15:0] during a write
Numonyx™ Wireless Flash Memory (W30)
Numonyx™ Wireless Flash Memory (W30)
WE#
H
H
H
H
L
X
X
Asserted
Asserted
Asserted
High-Z
High-Z
Driven
WAIT
Active
Order Number: 290702-13
DQ[15:0
Output
Output
Output
High-Z
High-Z
High-Z
Input
]
November 2007
Notes
3,4
1
2
3
3
-
-