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M36W432-ZAT Datasheet(PDF) 6 Page - STMicroelectronics |
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M36W432-ZAT Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 57 page M36W432T, M36W432B 6/57 Figure 3. LFBGA Connections (Top view through package) SIGNAL DESCRIPTIONS See Figure 2 Logic Diagram and Table 1,Signal Names, for a brief overview of the signals connect- ed to this device. Address Inputs (A0-A17). Addresses A0-A17 are common inputs for the Flash and the SRAM components. The Address Inputs select the cells in the memory array to access during Bus Read operations. During Bus Write operations they con- trol the commands sent to the Command Interface of the internal state machine. The Flash memory is accessed through the Chip Enable (EF)and Write Enable (WF) signals, while the SRAM is accessed through two Chip Enable signals (E1S and E2S) and the Write Enable signal (WS). Address Inputs (A18-A20). Addresses A18-A20 are inputs for the Flash component only. The Flash memory is accessed through the Chip En- able (EF) and Write Enable (WF) signals Data Input/Output (DQ0-DQ15). The Data I/O outputs the data stored at the selected address during a Bus Read operation or inputs a command or thedatatobeprogrammedduringa WriteBus operation. Flash Chip Enable (EF). The Chip Enable input activates the Flash memory control logic, input buffers, decoders and sense amplifiers. When Chip Enable is at VIL and ResetisatVIH the device is in active mode. When Chip Enable is at VIH the memory is deselected, the outputs are high imped- ance and the power consumption is reduced to the standby level. Flash Output Enable (GF). The Output Enable controls the data outputs during the Bus Read op- eration of the Flash memory. Flash Write Enable (WF). The Write Enable controls the Bus Write operation of the Flash memory’s Command Interface. The data and ad- dress inputs are latched on the rising edge of Chip Enable, EF, or Write Enable, WF, whichever oc- curs first. AI05201 A 6 5 4 3 2 1 #2 #1 E B F A12 A13 A11 A20 NC NC E2S DQ12 VSSS A2 A3 A6 A7 A18 EF A0 A4 NC NC DQ4 WS DQ15 A9 A16 DQ6 DQ13 NC WF A8 A10 A5 NC VSSF A17 RPF A15 A14 NC NC VDDF E1S A1 NC NC GF VDDS DQ7 DQ5 DQ14 NC VSSF VDDQF #4 #3 8 7 C DQ10 DQ11 A19 WPF VPPF DQ3 DQ2 D DQ8 DQ9 GS LBS UBS DQ1 DQ0 G H |
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