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PD46365364BF1-E33Y-EQ1 Datasheet(PDF) 7 Page - Renesas Technology Corp |
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PD46365364BF1-E33Y-EQ1 Datasheet(HTML) 7 Page - Renesas Technology Corp |
7 / 39 page μPD46365084B, μPD46365094B, μPD46365184B, μPD46365364B R10DS0090EJ0400 Rev.4.00 Page 7 of 38 Nov 09, 2012 Pin Description (1/2) Symbol Type Description A Input Synchronous Address Inputs: These inputs are registered and must meet the setup and hold times around the rising edge of K. All transactions operate on a burst of four words (two clock periods of bus activity). These inputs are ignored when device is deselected, i.e., NOP (R# = W# = HIGH). D0 to Dxx Input Synchronous Data Inputs: Input data must meet setup and hold times around the rising edges of K and K# during WRITE operations. See Pin Arrangement for ball site location of individual signals. x8 device uses D0 to D7. x9 device uses D0 to D8. x18 device uses D0 to D17. x36 device uses D0 to D35. Q0 to Qxx Output Synchronous Data Outputs: Output data is synchronized to the respective C and C# or to K and K# rising edges if C and C# are tied HIGH. Data is output in synchronization with C and C# (or K and K#), depending on the R# command. See Pin Arrangement for ball site location of individual signals. x8 device uses Q0 to Q7. x9 device uses Q0 to Q8. x18 device uses Q0 to Q17. x36 device uses Q0 to Q35. R# Input Synchronous Read: When LOW this input causes the address inputs to be registered and a READ cycle to be initiated. This input must meet setup and hold times around the rising edge of K. If a READ command (R# = LOW) is input, an input of R# on the subsequent rising edge of K is ignored. W# Input Synchronous Write: When LOW this input causes the address inputs to be registered and a WRITE cycle to be initiated. This input must meet setup and hold times around the rising edge of K. If a WRITE command (W# = LOW) is input, an input of W# on the subsequent rising edge of K is ignored. BWx# NWx# Input Synchronous Byte Writes (Nibble Writes on x8): When LOW these inputs cause their respective byte or nibble to be registered and written during WRITE cycles. These signals must meet setup and hold times around the rising edges of K and K# for each of the two rising edges comprising the WRITE cycle. See Pin Arrangement for signal to data relationships. x8 device uses NW0#, NW1#. x9 device uses BW0#. x18 device uses BW0#, BW1#. x36 device uses BW0# to BW3#. See Byte Write Operation for relation between BWx#, NWx# and Dxx. K, K# Input Input Clock: This input clock pair registers address and control inputs on the rising edge of K, and registers data on the rising edge of K and the rising edge of K#. K# is ideally 180 degrees out of phase with K. All synchronous inputs must meet setup and hold times around the clock rising edges. C, C# Input Output Clock: This clock pair provides a user controlled means of tuning device output data. The rising edge of C# is used as the output timing reference for first and third output data. The rising edge of C is used as the output reference for second and fourth output data. Ideally, C# is 180 degrees out of phase with C. When use of K and K# as the reference instead of C and C#, then fixed C and C# to HIGH. Operation cannot be guaranteed unless C and C# are fixed to HIGH (i.e. toggle of C and C#). |
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