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M28F201-120K3R Datasheet(PDF) 9 Page - STMicroelectronics |
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M28F201-120K3R Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 21 page AI00644 tWHGL tVPHEL 00000h-00001h tELQV tEHQZ tAVQV A0-A17 E G DQ0-DQ7 DATA OUT COMMAND VPP W tAXQX tGHQZ tGLQV READ MANUFACTURER OR DEVICE READ ELECTRONIC SIGNATURE SET-UP tWLWH tWHDX tDVWH tGHWL tELWL tWHEH Figure 7. Electronic Signature Command Waveforms Program and Program Verify Modes. The Pro- gram Mode is set-up by writing 40h to the command register. This is followed by a second write cycle which latches the address and data of the byte to be programmed. The rising edge of W during this second cycle starts the programming operation. Programming is followed by a Program Verify of the data written. Program Verify Mode is set-up by writing C0h to the command register. The rising edge of W during the set-up of the Program Verify Mode stops the Pro- gramming operation. The following read cycle, of the address already latched during programming, is made with an internally generated margin volt- age applied, reading valid data indicates that all bits have been programmed. Reset Mode. This command is used to safely abort Erase or Program Modes. The Reset Mode is set-up and performed by writing FFh two times to the command register. The command should be followed by writing a valid command to the the command register (for example Read). 9/21 M28F201 |
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