Renesas 71T75602S133PFG8

Overview

71T75602S133PFG8 from IDT (now Renesas) is a 2.5V synchronous ZBT™ SRAM with 512K × 36-bit organization (18 Mbit), 200 MHz operation, 3.2 ns clock-to-data access, zero bus turnaround architecture, and pipelined burst reads/writes - deployed in high-speed networking line cards and packet buffer subsystems.

For engineers reviewing the 71T75602S133PFG8 datasheet, 71T75602S133PFG8 pinout, 71T75602S133PFG8 application, or 71T75602S133PFG8 equivalent, key selection criteria include ZBT™ timing compliance, TQFP-100 package compatibility, 2.5V I/O supply (VDDQ), industrial temperature support (–40°C to +85°C), and JTAG IEEE 1149.1 test interface integration.

Technical Context

The 71T75602S133PFG8 implements a fully synchronous, rising-edge-triggered architecture with registered address, control, and data paths. Its internal burst counter supports 4-word linear or interleaved sequences controlled by the static LBO pin, and ADV/LD determines whether external addresses are loaded or the counter is advanced.

ZBTTM operation eliminates dead cycles between read/write transitions via internally synchronized output enable and pipelined output registers. The device uses three chip enables (CE1, CE2 active-low; CE2 active-high) for depth expansion and supports individual byte write (BW1–BW4) with 9-bit granularity across its 36-bit I/O bus.

Key Specifications

Pinout & Package

Packaged in JEDEC-standard 100-pin thin quad flatpack (TQFP), 14 mm × 20 mm body, 0.5 mm pitch. Pinout validated per PKG100 configuration for 512K × 36 mode (71T75602).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1305KV18-200BZI and AS7C33128PFS-20BIN, the 71T75602S133PFG8 uniquely delivers ZBTTM timing, industrial temperature support, and integrated JTAG in a 36-bit TQFP package - making it the sole option for deterministic high-throughput packet buffering where bus turnaround elimination is mandatory.

Availability

71T75602S133PFG8 is available at Aetrix Electronics and suitable for packet buffering, network processor interfacing, and telecom line card applications requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.

Supply support for 71T75602S133PFG8 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

IDT (Integrated Device Technology), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, and RF power solutions.

The 71T75602S133PFG8 belongs to IDT's ZBT™ synchronous SRAM product line, engineered specifically for high-speed communications infrastructure demanding zero-bus-turnaround performance and deterministic burst access.

FAQ

What memory organization does the 71T75602S133PFG8 support?

The 71T75602S133PFG8 supports only the 512K × 36-bit configuration (18,874,368 bits). It does not support the 1M × 18 variant - that is implemented in the pin-compatible but functionally distinct 71T75802. This organization provides 36-bit data width ideal for 4-byte-aligned packet header processing.

Does the 71T75602S133PFG8 require external output enable (OE) control?

No - the 71T75602S133PFG8 features internally synchronized output enable, eliminating the need for external OE timing management. OE is asynchronous but can be tied low for continuous read operation; the device handles output tri-state control synchronously based on internal state, simplifying system timing design.

What is the role of the ADV/LD and LBO pins on the 71T75602S133PFG8?

ADV/LD determines whether the device loads a new external address (LOW) or advances its internal burst counter (HIGH). LBO selects burst order: LOW enables linear sequence (0,1,2,3), HIGH enables interleaved (0,2,1,3). Both are synchronous inputs critical to burst-mode operation of the 71T75602S133PFG8.

Is JTAG boundary scan supported on the 71T75602S133PFG8 in TQFP packaging?

Yes - the 71T75602S133PFG8 includes full IEEE 1149.1-compliant JTAG (TMS, TDI, TCK, TDO) in its 100-pin TQFP package. TRST is omitted in TQFP (present only in BGA variants), but standard JTAG reset occurs automatically at power-up per IEEE 1149.1, ensuring robust testability.

How does the 71T75602S133PFG8 achieve zero bus turnaround (ZBTTM)?

The 71T75602S133PFG8 achieves ZBTTM through synchronized internal control of output enable and pipelined data registers - allowing immediate transition from write to read (or vice versa) without bus idle cycles. This is implemented in hardware and requires no external logic, directly enabling back-to-back 200 MHz memory transactions.