MX28F2100B Просмотр технического описания (PDF) - Macronix International
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MX28F2100B Datasheet PDF : 45 Pages
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MX28F2100B
Status Register Bit Definition
WSMS ESS ES
7
6
5
PS
VPPS
4
3
SR.7 = WRITE STATE MACHINE STATUS(WSMS)
1 = Ready
0 = Busy
SR.6 = ERASE-SUSPEND STATUS (ESS)
1 = Erase Suspended
0 = Erase in Progress/Completed
SR.5 = ERASE STATUS
1 = Error in Erase
0 = Successful Erasure
SR.4 = PROGRAM STATUS
1 = Error in Byte/Word Program
0 = Successful Byte/Word Program
SR.3 = Vpp STATUS
1 = Vpp Low Detect, Operation Abort
0 = Vpp OK
NOTE :
State machine bit must first be checked to determine
Byte/Word program or Block Erase completion, before
the Program or Erase Status bits are checked for success.
When Erase Suspend is issued, state machine halts
execution and sets both WSMS and ESS bits to "1," ESS
bit remains set to "1" until an Erase Resume command is
issued.
When this bit set to "1," state machine has applied the
maximum number of erase pulses to the device and is still
unable to successfully verify erasure.
When this bit is set to "1," state machine has attempted
but failed to program a byte or word.
The Vpp status bit, unlike an A/D converter, does not
provide continuous indication of Vpp level. The state
machine interrogates Vpp level only after the Byte Write
or Erase command sequences have been entered, and
informs the system if Vpp has not been switched on.
P/N: PM0382
REV. 1.5, MAR. 24, 1998
10
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