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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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S71PL129JC0 датащи(PDF) 60 Page - SPANSION |
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S71PL129JC0 датащи(HTML) 60 Page - SPANSION |
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60 / 153 page  58 S71PL129JC0/S71PL129JB0/S71PL129JA0 S71PL129Jxx_00_A8 October 28, 2005 Advance Info rmation RY/BY#: Ready/Busy# The RY/BY# is a dedicated, open-drain output pin which indicates whether an Embedded Algorithm is in progress or complete. The RY/BY# status is valid after the rising edge of the final WE# pulse in the command sequence. Since RY/BY# is an open-drain output, several RY/BY# pins can be tied together in parallel with a pull-up resistor to VCC. If the output is low (Busy), the device is actively erasing or programming. (This includes programming in the Erase Suspend mode.) If the output is high (Ready), the device is in the read mode, the standby mode, or one of the banks is in the erase-suspend-read mode. Table 14 shows the outputs for RY/BY#. DQ6: Toggle Bit I Toggle Bit I on DQ6 indicates whether an Embedded Program or Erase algorithm is in progress or complete, or whether the device has entered the Erase Suspend mode. Toggle Bit I may be read at any address, and is valid after the rising edge of the final WE# pulse in the command sequence (prior to the program or erase operation), and during the sector erase time-out. Notes: 1. VA = Valid address for programming. During a sector erase operation, a valid address is any sector address within the sector being erased. During chip erase, a valid address is any non-protected sector address. 2. DQ7 should be rechecked even if DQ5 = “1” because DQ7 may change simultaneously with DQ5. Figure 6. Data# Polling Algorithm DQ7 = Data? Yes No No DQ5 = 1? No Yes Yes FAIL PASS Read DQ7–DQ0 Addr = VA Read DQ7–DQ0 Addr = VA DQ7 = Data? START |
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