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M9346-BN3T Datasheet(PDF) 10 Page - STMicroelectronics |
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M9346-BN3T Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 34 page ![]() M93S66, M93S56, M93S46 10/34 Figure 5. PAWRITE and WRAL Sequence Note: For the meanings of An, Xn and Dn, please see Table 2. and Table 3.. Page Write A Page Write to Memory (PAWRITE) instruction contains the first address to be written, followed by up to 4 data words. After the receipt of each data word, bits A1-A0 of the internal address register are incremented, the high order bits remaining unchanged (A7-A2 for M93S66, M93S56; A5-A2 for M93S46). Users must take care, in the software, to ensure that the last word address has the same upper order ad- dress bits as the initial address transmitted to avoid address roll-over. The Page Write to Memory (PAWRITE) instruction will not be executed if any of the 4 words address- es the protected area. Write Enable (W) must be held High before and during the instruction. Input address and data, on Serial Data Input (D) are sampled on the rising edge of Serial Clock (C). After the last data bit has been sampled, the Chip Select Input (S) must be taken Low before the next rising edge of Serial Clock (C). If Chip Select Input (S) is brought Low before or after this specific time frame, the self-timed programming cycle will not AI00890C S PAGE WRITE 1 1An A0 DATA IN D Q OP CODE Dn D0 1 BUSY READY CHECK STATUS ADDR PRE W S WRITE ALL 1 0Xn X0 DATA IN D Q OP CODE Dn D0 0 BUSY READY CHECK STATUS ADDR PRE W 01 |
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