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R1QFA3636CB Datasheet(PDF) 7 Page - Renesas Technology Corp |
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R1QFA3636CB Datasheet(HTML) 7 Page - Renesas Technology Corp |
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7 / 38 page  PAGE : 7 Rev. 0.10b : 2012.03.12 R1QGA36**C / R1QKA36**C Series Output impedance matching input: This input is used to tune the device outputs to the system data bus impedance. Q and CQ output impedance are set to 0.2 RQ, where RQ is a resistor from this ball to ground. This ball can be connected directly to V DDQ, which enables the minimum impedance mode. This ball cannot be connected directly to V SS or left unconnected. In ODT (On Die Termination) enable devices, the ODT termination values tracks the value of RQ. The ODT range is selected by ODT control input. Input ZQ 1 ODT control: When low; [Option 1] Low range mode is selected. The impedance range is between 52 and 105 (Thevenin equivalent), which follows 0.3 RQ for 175 RQ 350 . [Option 2] ODT is disabled. When high; High range mode is selected. The impedance range is between 105 and 150 (Thevenin equivalent), which follows 0.6 RQ for 175 RQ 250 . When floating; [Option 1] High range mode is selected. [Option 2] ODT is disabled. Input ODT (II+ only) Valid output indicator: The Q Valid indicates valid output data. QVLD is edge aligned with CQ and /CQ. Output QVLD (II+ only) No connect: These pins can be left floating or connected to 0V V DDQ. NC Notes: 1. Renesas status: Option 1 = Available, Option 2 = Possible. 2. All power supply and ground balls must be connected for proper operation of the device. 2 2 2 Notes HSTL input reference voltage: Nominally V DDQ/2, but may be adjusted to improve system noise margin. Provides a reference voltage for the HSTL input buffers. V REF Power supply: Ground. Supply V SS Power supply: Isolated output buffer supply. Nominally 1.5 V. See DC Characteristics and Operating Conditions for range. Supply V DDQ Power supply: 1.8 V nominal. See DC Characteristics and Operating Conditions for range. Supply V DD Synchronous data outputs: Output data is synchronized to the respective C and /C, or to the respective K and /K if C and /C are tied high. This bus operates in response to /R commands. See Pin Arrangement figures for ball site location of individual signals. The 9 device uses Q0~Q8. Q9~Q35 should be treated as NC pin. The 18 device uses Q0~Q17. Q18~Q35 should be treated as NC pin. The 36 device uses Q0~Q35. Output Q 0 to Qn IEEE 1149.1 test output: 1.8 V I/O level. Output TDO Synchronous echo clock outputs: The edges of these outputs are tightly matched to the synchronous data outputs and can be used as a data valid indication. These signals run freely and do not stop when Q tri- states. Output CQ, /CQ 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 figures for ball site location of individual signals. The 9 device uses D0~D8. D9~D35 should be treated as NC pin. The 18 device uses D0~D17. D18~D35 should be treated as NC pin. The 36 device uses D0~D35. Input D 0 to Dn Descriptions I/O type Name --- R10DS0195EJ0010 |
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