Renesas 7027L20PF8

Overview

IDT7027L20PF8 from IDT (Integrated Device Technology) is a high-speed 32K × 16 dual-port static RAM with true dual-ported memory cells enabling simultaneous access to the same memory location, 20 ns maximum access time (industrial grade), 1 mW typical standby power, and full on-chip semaphore and arbitration logic - used in real-time embedded systems requiring deterministic inter-processor communication, such as industrial PLCs and avionics data buffers.

For engineers reviewing the IDT7027L20PF8 datasheet, IDT7027L20PF8 pinout, IDT7027L20PF8 application, or IDT7027L20PF8 equivalent, key selection criteria include its 100-pin TQFP package, dual independent asynchronous ports with BUSY/INT flags, master/slave cascading capability for 32-bit+ bus expansion, and industrial temperature range (–40°C to +85°C) compliance.

Technical Context

The IDT7027L20PF8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port, supporting concurrent read/write operations without external arbitration logic. Its on-chip arbitration uses address-match and chip-enable timing to assert BUSY flags, while semaphore logic enables eight hardware-managed mutual-exclusion flags accessible via A0–A2.

It supports MASTER/SLAVE configuration via the M/S pin: when M/S = VIH, BUSY is an output flag indicating contention; when M/S = VIL, BUSY becomes an input that inhibits writes during contention. Interrupt flags (INTL/INTR) are triggered by writes to dedicated mailbox addresses (7FFE_H/7FFF_H) and cleared by subsequent reads.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (Thin Quad Flatpack), JEDEC standard, lead-free, RoHS-compliant, body size 14 mm × 14 mm × 1.4 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Compared with CY7C028V-20AXC and R1EX24064ASAS0I#U0, the IDT7027L20PF8 uniquely delivers integrated arbitration, semaphore, and master/slave cascading in a compact TQFP package - making it the sole choice for deterministic, low-overhead inter-processor communication in industrial and aerospace systems.

Availability

IDT7027L20PF8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data buffers, medical imaging subsystems, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for IDT7027L20PF8 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) is a fabless semiconductor company specializing in high-performance timing, memory interface, and RF solutions, now part of Renesas Electronics since 2019.

The IDT7027L20PF8 belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems where hardware-enforced synchronization is critical.

FAQ

What is the operating temperature range of the IDT7027L20PF8?

The IDT7027L20PF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all electrical parameters including 20 ns maximum access time, 1 mW standby power, and full functionality of BUSY/INT flags and semaphore logic - making it suitable for deployment in factory automation, transportation, and outdoor infrastructure applications.

Does the IDT7027L20PF8 support master/slave configuration for bus expansion?

Yes, the IDT7027L20PF8 supports master/slave configuration via the M/S pin. When M/S = VIH, BUSY is an output flag used for arbitration in master mode; when M/S = VIL, BUSY becomes an input that blocks writes during contention in slave mode. This enables seamless cascading of multiple IDT7027L20PF8 devices to build 32-bit or wider memory systems without external logic.

How does the semaphore functionality work on the IDT7027L20PF8?

The IDT7027L20PF8 integrates eight hardware semaphore flags accessed via A0–A2 and controlled by SEM pins. Each flag is written via I/O0 and read across all 16 I/O lines. The semaphore logic operates independently per port and requires CE = VIH and SEM = VIL to activate - enabling atomic acquire/release operations without CPU intervention or software overhead.

What package type is used for the IDT7027L20PF8?

The IDT7027L20PF8 is packaged in a 100-pin Thin Quad Flatpack (TQFP) with a 14 mm × 14 mm × 1.4 mm body. It is lead-free and RoHS-compliant. This surface-mount package supports high-density PCB layouts and is reflow-solder compatible, distinguishing it from PGA variants of the same family.

Can the IDT7027L20PF8 operate with a 3.3 V supply?

No, the IDT7027L20PF8 requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and is TTL-compatible. It is not 3.3 V tolerant - applying 3.3 V will result in undefined operation, failure to meet 20 ns access timing, and potential data corruption. For 3.3 V systems, a level-shifting interface or alternative SRAM must be used.