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M93S66-125 Datasheet(PDF) 8 Page - STMicroelectronics |
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M93S66-125 Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 28 page Instructions M93S66-125 M93S56-125 M93S46-125 8/28 Doc ID 022567 Rev 1 Table 2. Instruction set for the M93S46 Instruction Description W PRE Start bit Opcode Address(1) Data Required clock cycles Additional comments READ Read Data from Memory X 0 1 10 A5-A0 Q15-Q0 WRITE Write Data to Memory 1 0 1 01 A5-A0 D15-D0 25 Write is executed if the address is not inside the Protected area PAWRITE Page Write to Memory 10 1 11 A5-A0 N x D15-D0 9 + N x 16 Write is executed if all the N addresses are not inside the Protected area WRAL Write All Memory with same Data 1 0 1 00 01 XXXX D15-D0 25 Write all data if the Protection Register is cleared WEN Write Enable 1 0 1 00 11 XXXX 9 WDS Write Disable X 0 1 00 00 XXXX 9 PRREAD Protection Register Read X 1 1 10 XXXXXX Q5-Q0 + Flag Data Output = Protection Register content + Protection Flag bit PRWRITE Protection Register Write 11 1 01 A5-A0 9 Data above specified address A5-A0 are protected PRCLEAR Protection Register Clear 1 1 1 11 111111 9 Protect Flag is also cleared (cleared Flag = 1) PREN Protection Register Enable 1 1 1 00 11XXXX 9 PRDS Protection Register Disable 1 1 1 00 000000 9 OTP bit is set permanently 1. X = Don't Care bit. |
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