Renesas 71V016SA12BF

Overview

71V016SA12BF from Renesas Electronics is a 64K × 16-bit (1 Mbit), 3.3 V CMOS asynchronous static RAM with 12 ns read/write cycle time, industrial temperature range (–40°C to +85°C), and FBGA-48 (7 mm × 7 mm) packaging. It features separate high- and low-byte enables, LVTTL-compatible I/Os, and full static operation requiring no clocks or refresh - deployed in real-time control buffers, FPGA configuration storage, and legacy industrial PLC memory subsystems.

For engineers reviewing the 71V016SA12BF datasheet, 71V016SA12BF pinout, 71V016SA12BF application, or 71V016SA12BF equivalent, key selection criteria include access timing consistency (tAA = tRC = 12 ns), byte-selectable write capability, 3.3 V single-supply compatibility, and industrial-grade thermal reliability in compact FBGA packaging.

Technical Context

The 71V016SA12BF implements fully static asynchronous logic with independent chip select (CS), output enable (OE), write enable (WE), and dual byte enable (BHE/ BLE) controls - enabling word, high-byte, or low-byte read/write operations without external sequencing. Its address decoding supports 16-bit parallel access across A0–A15 with no wait states.

All I/Os are bidirectional and LVTTL-compatible (VIH = 2.0 V min, VIL = 0.8 V max), and internal circuitry ensures deterministic high-impedance transitions (tOHZ ≤ 6 ns, tCHZ ≤ 6 ns) during deselect or OE deassertion. Power management includes dynamic standby current (ISB = 40 mA max) and static full-standby current (ISB1 = 10 mA).

Key Specifications

Pinout & Package

71V016SA12BF uses a JEDEC-standard 48-ball plastic FBGA (BFG48) package with 7 mm × 7 mm footprint and 0.8 mm ball pitch. Ball assignment follows standard memory layout with dedicated power/ground distribution and symmetrical I/O placement for signal integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar static RAM applications.

Compared with CY62167EV30LL-45ZSXI and AS6C1008-12TIN, the 71V016SA12BF delivers superior density-per-area via FBGA-48, deterministic 12 ns timing, and native 16-bit byte-select capability - making it optimal for space-constrained, high-speed industrial and medical controllers where timing predictability and partial-write integrity are mandatory.

Availability

71V016SA12BF is available at Aetrix Electronics and suitable for industrial PLCs, FPGA configuration systems, medical imaging subsystems, and avionics display controllers requiring stable component supply across extended product lifecycles.

Supply support for 71V016SA12BF 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.

The 71V016SA series was designed as a drop-in replacement for legacy 5 V SRAMs in 3.3 V system upgrades - emphasizing timing consistency, industrial reliability, and package flexibility across SOJ, TSOP, and FBGA variants.

FAQ

What is the maximum operating frequency supported by the 71V016SA12BF?

The 71V016SA12BF does not operate on a clock signal - it is an asynchronous static RAM. Its performance is defined by timing parameters: maximum read/write cycle time is 12 ns, corresponding to an effective bus bandwidth of up to 83.3 MHz for consecutive random accesses. System-level throughput depends on controller handshake timing and address setup/hold compliance, not an internal clock.

Does the 71V016SA12BF support partial-word writes without affecting adjacent bytes?

Yes, the 71V016SA12BF supports true partial-word writes using its dedicated BHE (high-byte enable) and BLE (low-byte enable) inputs. When only BLE is asserted, only I/O0–I/O7 are written; when only BHE is asserted, only I/O8–I/O15 are written. This prevents unintended modification of neighboring data during 8-bit peripheral register updates - a key requirement in industrial I/O modules.

Is the 71V016SA12BF pin-compatible with other speed grades in the same package?

Yes, all 71V016SA variants (10/12/15/20 ns) in the BFG48 FBGA package share identical pinout and ball assignment. The 71V016SA12BF can be substituted with 71V016SA10BF or 71V016SA15BF on the same PCB layout without hardware changes - enabling timing margin tuning or cost optimization during production ramp.

What is the meaning of "Green" in the 71V016SA12BF ordering code?

"Green" denotes RoHS-compliant, lead-free construction per EU Directive 2011/65/EU and Renesas' green part policy. The 71V016SA12BF meets halogen-free and antimony-free material requirements, with matte-tin surface finish on solder balls. No special reflow profile is required beyond standard Pb-free JEDEC J-STD-020D specifications.

How does the 71V016SA12BF handle bus contention during read-to-write transitions?

The 71V016SA12BF prevents bus contention through controlled output impedance transitions: tOHZ ≤ 6 ns (output disable delay) and tOLZ = 0 ns (output enable delay) ensure outputs enter high-Z before new data drives the bus. When WE transitions low while OE is high, tWHZ guarantees I/Os go high-Z within 6 ns - allowing safe overlap of read completion and write initiation in shared-bus architectures.