Renesas UPD44165182BF5-E50Y-EQ3-A

Overview

UPD44165182BF5-E50Y-EQ3-A from Renesas Electronics is a 1,048,576-word × 18-bit synchronous Quad Data Rate II (QDR II) SRAM with 5.0 ns clock cycle time (200 MHz), 1.8 V core supply, HSTL interface, and 165-pin plastic BGA (13 × 15) package. It supports concurrent read/write ports, burst-2 operation, and clock-stop capability for low-power system states in high-bandwidth networking buffers.

For engineers reviewing the UPD44165182BF5-E50Y-EQ3-A datasheet, UPD44165182BF5-E50Y-EQ3-A pinout, UPD44165182BF5-E50Y-EQ3-A application, or UPD44165182BF5-E50Y-EQ3-A equivalent, key selection considerations include its −40°C to +85°C industrial temperature rating, user-programmable output impedance (35–70 Ω), dual-clock timing architecture (K/K# input, C/C# output), and JTAG 1149.1 test access support.

Technical Context

This QDR II SRAM employs full-CMOS six-transistor memory cells and integrates a PLL-based DLL for precise output data valid window control and frequency scalability. Its synchronous peripheral circuitry latches all inputs on the rising edge of K (read/control) and K# (write address/data), enabling deterministic DDR timing without external phase alignment.

The device implements independent read and write data paths with concurrent transaction capability, two-tick burst addressing, and internally self-timed write control. Output clocks C/C# deliver synchronized data with matched flight time, while echo clocks CQ/CQ# provide tight data-valid indication aligned to Q outputs.

Key Specifications

Pinout & Package

UPD44165182BF5-E50Y-EQ3-A is housed in a 165-pin plastic BGA (13 × 15 mm, 0.8 mm pitch) with standard ball grid layout optimized for signal integrity in high-speed DDR memory subsystems. Pin functions follow JEDEC HSTL Class I definitions and include dedicated echo clocks (CQ/CQ#), output impedance tuning (ZQ), and IEEE 1149.1 JTAG test access (TCK/TMS/TDI/TDO).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar QDR II SRAM applications.

Compared with CY7C2665KV18 and AS7C3318B, UPD44165182BF5-E50Y-EQ3-A delivers superior timing precision via echo clocks and adaptive impedance control, enabling robust 200 MHz operation in thermally demanding industrial environments without layout compromises.

Availability

UPD44165182BF5-E50Y-EQ3-A is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and baseband processing applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for UPD44165182BF5-E50Y-EQ3-A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and communications markets.

UPD44165182BF5-E50Y-EQ3-A belongs to Renesas' QDR II SRAM product line, engineered specifically for high-throughput, low-latency memory subsystems in networking infrastructure and real-time signal processing equipment.

FAQ

What is the operating temperature range of UPD44165182BF5-E50Y-EQ3-A?

UPD44165182BF5-E50Y-EQ3-A is rated for industrial operation from −40°C to +85°C, as confirmed in the "Ordering Information" section of the R10DS0017EJ0200 datasheet (Page 3). This range is validated across all electrical characteristics including IDD, ISB1, and AC timing parameters under VDD = 1.8 ± 0.1 V conditions.

Does UPD44165182BF5-E50Y-EQ3-A support JTAG boundary-scan testing?

Yes, UPD44165182BF5-E50Y-EQ3-A integrates a fully compliant IEEE 1149.1 test access port with dedicated TCK, TMS, TDI, and TDO pins operating at 1.8 V I/O level. The "Pin Description" section (Page 7) confirms these signals are functional and may be left unconnected only if JTAG is unused in the target system.

How does the ZQ pin function in UPD44165182BF5-E50Y-EQ3-A?

The ZQ pin on UPD44165182BF5-E50Y-EQ3-A connects to an external resistor to ground to calibrate output driver impedance. As specified on Page 8, Q, CQ, and CQ# outputs are set to 0.2 × RQ, enabling precise 35–70 Ω matching. Calibration occurs every 20 μs after power-up and tracks voltage/temperature drift.

What clocking architecture does UPD44165182BF5-E50Y-EQ3-A use for read operations?

UPD44165182BF5-E50Y-EQ3-A uses dual clock pairs: K/K# for input synchronization and C/C# for output timing. During reads, data is delivered synchronized to C/C# rising edges (first word on C#↑, second on C↑), as defined in the "Pin Description" (Page 7) and "Truth Table" (Page 11).

Can UPD44165182BF5-E50Y-EQ3-A operate without its internal PLL?

Yes - pulling DLL# LOW disables the PLL, allowing operation at frequencies below TKHKH (MAX.) for debug or low-speed validation. However, the datasheet (Page 8) explicitly states AC/DC characteristics are not guaranteed in this mode, and DLL# must be HIGH (tied to VDDQ) for production operation.