28F640W30 NUMONYX [Numonyx B.V], 28F640W30 Datasheet - Page 60

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

Figure 28: Word Program Flowchart
11.2
Datasheet
60
Factory Programming
The standard factory programming mode uses the same commands and algorithm as
the Word Program mode (40h/10h). When V
are drawn through VCC. If VPP is driven by a logic signal, V
V
connected to a 12 V power supply, the flash device draws program and erase current
directly from VPP, which eliminates the need for an external switching transistor to
control the V
PPL
Word Address
Word Address
Status Check
Full Program
Read Status
Read Status
Write Data
Successful
Write 40h,
(if desired)
Min value to perform in-system flash memory modifications. When VPP is
Complete
Program
Program
Register
Register
SR[4] =
SR[7] =
SR[3] =
SR[1] =
Start
1
0
0
0
PP
0
1
1
1
voltage.
Protect Error
V
Suspend
Program
Program
PP
Device
Error
Error
Range
FULL PROGRAM STATUS CHECK PROCEDURE
No
WORD PROGRAM PROCEDURE
Yes
Suspend
Program
Loop
Operation
Operation
Repeat for subsequent programming operations.
Full status register check can be done after each program or
after a sequence of program operations.
SR[3] MUST be cleared before the WSM will allow further
program attempts
Only the Clear Staus Register command clears SR[4:3,1].
If an error is detected, clear the status register before
attempting a program retry or other error recovery.
Standby
Standby
Standby
Standby
Write
Write
Read
Bus
Bus
PP
is at V
Command
Command
Program
Numonyx™ Wireless Flash Memory (W30)
Numonyx™ Wireless Flash Memory (W30)
Setup
Data
PPL
, program and erase currents
Data = 40h
Addr = Location to program (WA)
Data = Data to program (WD)
Addr = Location to program (WA)
Read SRD
Toggle CE# or OE# to update SRD
Check SR[7]
1 = WSM ready
0 = WSM busy
Check SR[3]
1 = V
Check SR[4]
1 = Data program error
Check SR[1]
1 = Attempted program to locked block
PPL
Program aborted
PP
must remain above the
error
Order Number: 290702-13
Comments
Comments
November 2007