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TC58DVM82F1FT00 데이터시트(PDF) 21 Page - Toshiba Semiconductor |
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TC58DVM82F1FT00 데이터시트(HTML) 21 Page - Toshiba Semiconductor |
21 / 34 page TC58DVM72A1FT00/ TC58DVM72F1FT00 TC58DAM72A1FT00/ TC58DAM72F1FT00 2003-01-24 21/34 Status Read The device automatically implements the execution and verification of the Program and Erase operations. The Status Read function is used to monitor the Ready/Busy status of the device, determine the result (pass/fail) of a Program or Erase operation, and determine whether the device is in Protect mode. The device status is output via the I/O port on the RE clock after a 70H command input. The resulting information is outlined in Table 5. Table 5. Status output table STATUS OUTPUT I/O1 Pass/Fail Pass: 0 Fail: 1 I/O2 Not Used 0 I/O3 Not Used 0 I/O4 Not Used 0 I/O5 Not Used 0 I/O6 Not Used 0 I/O7 Ready/Busy Ready: 1 Busy: 0 I/O8 Write Protect Protect: 0 Not Protected: 1 I/O9 to I/O16 Not Used 0 The Pass/Fail status on I/O1 is only valid when the device is in the Ready state. An application example with multiple devices is shown in Figure 6. System Design Note: If the BY / RY pin signals from multiple devices are wired together as shown in the diagram, the Status Read function can be used to determine the status of each individual device. Device 1 CLE 1 CE Device 2 2 CE Device 3 3 CE Device N N CE Device N 1 1 N CE ALE WE RE I/O1 ~I/O8 BY / RY WE RE Status on Device 1 70H 1 CE ALE I/O 70H Status on Device N CLE N CE Figure 6. Status Read timing application example Busy BY / RY |
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