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Q67120-C850 Datasheet(PDF) 11 Page - Siemens Semiconductor Group |
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Q67120-C850 Datasheet(HTML) 11 Page - Siemens Semiconductor Group |
11 / 58 page SAB 88C166(W) Semiconductor Group 10 FCR (FFA0H / D0H) SFR Reset Value: 00X0H *) *) The reset value of bit VPPREV depends on the voltage on pin V PP. Note: The FCR is no real register but is rather virtually mapped into the active address space of the Flash memory while the Flash writing mode is active. In writing mode all direct (mem) accesses refer to the FCR, while all indirect ([Rwn]) accesses refer to the Flash memory array itself. Bit Function FWE Flash Write Enable Bit (see description below) 0 : Flash write operations (program / erase) disabled 1 : Flash write operations (program / erase) enabled FEE Flash Erase Enable Bit (Significant only, when FWE = ’1’, see description below) 0 : Flash programming mode selected 1 : Flash erase mode selected FBUSY RPROT Flash Busy Bit (On read accesses) 0 : No Flash write operation in progress 1 : Flash write operation in progress Flash Read Protection Activation Bit (On write accesses) 0 : Deactivates Flash read protection 1 : Activates Flash read protection, if this is enabled FCVPP Flash Control VPP Bit 0 : No VPP failure occurred during a Flash write operation 1 : VPP failure occurred during a Flash write operation VPPREV Flash VPP Revelation Bit 0 : No valid VPP applied to pin VPP 1 : VPP applied to pin VPP is valid CKCTL Internal Flash Timer Clock Control Determines the width of an internal Flash write or erase pulse WDWW Word / Double Word Writing Bit (significant only in programming mode) 0 : 16-bit programming operation 1 : 32-bit programming operation BE Bank Erase Select (significant only in erasing mode) Selects the Flash Bank to be erased FWMSET Flash Writing Mode Set Bit (see description below) 0 : Exit Flash writing mode, return to standard mode 1 : Stay in Flash writing mode rw FEE FWM SET rw - rw - rw - rw - rw - FWE 5 4 3 2 1 0 11 10 9 8 7 6 15 14 13 12 rw rw r rw rw r/w rw VPP REV FC VPP FBUSY RPROT rw CKCTL WDW W BE |
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