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MX69F164C3BBXBI-70 Datasheet(PDF) 11 Page - Macronix International |
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MX69F164C3BBXBI-70 Datasheet(HTML) 11 Page - Macronix International |
11 / 51 page 11 P/N:PM1083 MX69F162/164C3BT/B REV. 0.2, MAY 20, 2004 In read modes, RESET#-low deselects the memory, places output drivers in a high-impedance state and turns off all internal circuits. RESET# must be held low for a minimum of 100ns. Time tPHQV is required after return from reset mode until initial memory access outputs are valid. After this wake-up interval tPHEL or tPHWL, nor- mal operation is restored. The CUI is reset to read array mode and status register is set to 80H. Sector lock bit is set at lock status. During sector erase, word write or sector lock/unlock modes, RESET#-low will abort the operation. Memory con- tents being altered are no longer valid; the data may be partially erased or written. In addition, CUI will go into either array read mode or erase/write interrupted mode. When power is up and the device reset subsequently, it is necessary to read sta- tus register in order to assure the status of the device. Recognizing status register (SR.7~0) will assure if the device goes back to normal reset and enters array read mode. 2.5 Read Configuration Codes The read configuration codes operation outputs the manu- facturer code, device code, sector lock configuration codes, and the protection register. Using the manufac- turer and device codes, the system CPU can automati- cally match the device with its proper algorithms. The sector lock codes identify locked and unlocked sectors. 2.6 Write Writing commands to the CUI enable reading of device data and identifier codes. They also control inspection and clearing of the status register. When VCCf=2.7V- 3.6V and VPP within VPP1 or VPP2 range, the CUI ad- ditionally controls sector erase, word write and sector lock/unlock. The Sector Erase command requires appropriate com- mand data and an address within the sector to be erased. The Full Chip Erase command requires appropriate com- mand data and an address within the device. The Word Write command requires the command and address of the location to be written. Set Sector lock/unlock com- mands require the command and address within the de- vice or sector within the device (Sector Lock) to be locked. The Clear Sector Lock-Bits command requires the com- mand and address within the device. The CUI does not occupy an addressable memory loca- tion. It is written when WEf# and CEf# are active (which- ever goes high first). The address and data needed to execute a command are latched on the rising edge of WEf# or CEf#. Standard microprocessor write timings are used. |
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