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M6MGB166S4BWG Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor |
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M6MGB166S4BWG Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor |
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5 / 30 page  Apr. 1999 , Rev.1.7 MITSUBISHI LSIs 16,777,216-BIT (1,048,576 -WORD BY 16-BIT ) CMOS 3.3V-ONLY FLASH MEMORY & 4,194,304-BIT (262,144-WORD BY 16-BIT) CMOS SRAM Stacked-CSP (Chip Scale Package) M6MGB/T166S4BWG SOFTWARE COMMAND DEFINITIONS The device operations are selected by writing specific software command into the Command User Interface. Read Array Command (FFH) The device is in Read Array mode on initial device power up and after exit from deep powerdown, or by writing FFH to the Command User Interface. After starting the internal operation the device is set to the read status register mode automatically. Read Device Identifier Command (90H) It can normally read device identifier codes when Read Device Identifier Code Command(90H) is written to the command latch. Following the command write, the manufacturer code and the device code can be read from address 00000H and 00001H, respectively. Read Status Register Command (70H) The Status Register is read after writing the Read Status Register command of 70H to the Command User Interface. Also, after starting the internal operation the device is set to the Read Status Register mode automatically. The contents of Status Register are latched on the later falling edge of F-OE# or F-CE#. So F-CE# or F-OE# must be toggled every status read. Clear Status Register Command (50H) The Erase Status, Program Status and Block Status bits are set to "1"s by the Write State Machine and can only be reset by the Clear Status Register command of 50H. These bits indicates various failure conditions. Block Erase / Confirm Command (20H/D0H) Automated block erase is initiated by writing the Block Erase command of 20H followed by the Confirm command of D0H. An address within the block to be erased is required. The WSM executes iterative erase pulse application and erase verify operation. Program Commands A)Word Program (40H) Word program is executed by a two-command sequence. The Word Program Setup command of 40H is written to the Command Interface, followed by a second write specifying the address and data to be written. The WSM controls the program pulse application and verify operation. The Word Program Command is Valid for only Bank(I). DATA PROTECTION The Flash Memory of M6MGB/T166S4BWG provides selectable block locking of memory blocks. Each block has an associated nonvolatile lock-bit which determines the lock status of the block. In addition, the Flash Memory has a master Write Protect pin (F-WP#) which prevents any modifications to memory blocks whose lock-bits are set to "0", when F-WP# is low. When F-WP# is high, all blocks can be programmed or erased regardless of the state of the lock-bits, and the lock-bits are cleared to "1" by erase. See the BLOCK LOCKING table on P.9 for details. Power Supply Voltage When the power supply voltage (F-VCC) is less than VLKO, Low VCC Lock-Out voltage, the device is set to the Read-only mode. Regarding DC electrical characteristics of VLKO, see P.10. A delay time of 2 µs is required before any device operation is initiated. The delay time is measured from the time F-Vcc reaches F-Vccmin (2.7V). During power up, F-RP#=GND is recommended. Falling in Busy status is not recommended for possibility of damaging the device. MEMORY ORGANIZATION The Flash Memory of M6MGB/T166S4BWG has one 16Kword boot block, seven 16Kword parameter blocks, for Bank(I) and twenty-eight 32Kword main blocks for Bank(II). A block is erased independently of other blocks in the array. Suspend/Resume Command (B0H/D0H) Writing the Suspend command of B0H during block erase operation interrupts the block erase operation and allows read out from another block of memory. Writing the Suspend command of B0H during program operation interrupts the program operation and allows read out from another block of memory. The Bank address is required when writing the Suspend/Resume Command. The device continues to output Status Register data when read, after the Suspend command is written to it. Polling the WSM Status and Suspend Status bits will determine when the erase operation or program operation has been suspended. At this point, writing of the Read Array command to the CUI enables reading data from blocks other than that which is suspended. When the Resume command of D0H is written to the CUI, the WSM will continue with the erase or program processes. 5 B)Page Program for Data Blocks (41H) Page Program for Bank(I) and Bank(II) allows fast programming of 128words of data. Writing of 41H initiates the page program operation for the Data area. From 2nd cycle to 129th cycle, write data must be serially inputted. Address A6-A0 have to be incremented from 00H to 7FH. After completion of data loading, the WSM controls the program pulse application and verify operation. C)Single Data Load to Page Buffer (74H) / Page Buffer to Flash (0EH/D0H) Single data load to the page buffer is performed by writing 74H followed by a second write specifying the column address and data. Distinct data up to 128word can be loaded to the page buffer by this two-command sequence. On the other hand, all of the loaded data to the page buffer is programed simultaneously by writing Page Buffer to Flash command of 0EH followed by the confirm command of D0H. After completion of programing the data on the page buffer is cleared automatically. This command is valid for only Bank(I) alike Word Program. Clear Page Buffer Command (55H) Loaded data to the page buffer is cleared by writing the Clear Page Buffer command of 55H followed by the Confirm command of D0H. This command is valid for clearing data loaded by Single Data Load to Page Buffer command. |
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