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MX28F2100BTC-70 Datasheet(PDF) 10 Page - Macronix International |
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MX28F2100BTC-70 Datasheet(HTML) 10 Page - Macronix International |
10 / 45 page 10 MX28F2100B P/N: PM0382 REV. 1.5, MAR. 24, 1998 Status Register Bit Definition 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. WSMS ESS ES PS VPPS 7 6 5 4 3 |
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