My Inquiry
My Account
Renesas 7024L55PFI8
- Part No.:
- 7024L55PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7024L55PFI8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,026
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7024L55PFI8 from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 55 ns max read cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It supports simultaneous asynchronous access, on-chip semaphore arbitration, and battery-backed data retention down to 2V - enabling use in real-time inter-processor communication systems such as radar signal processors and avionics I/O controllers.
For engineers reviewing the 7024L55PFI8 datasheet, 7024L55PFI8 pinout, 7024L55PFI8 application, or 7024L55PFI8 equivalent, key selection considerations include its dual-port arbitration logic, BUSY/INT flag signaling, byte-selectable I/O control (UBL/LBL), M/S master/slave cascading capability, and low 1 µA full-standby current in CMOS-level input mode.
Technical Context
The 7024L55PFI8 implements fully asynchronous dual-port operation with separate address, control, and bidirectional I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion when both ports access the same memory location, while semaphore registers (A0–A2 addressed) enable inter-port synchronization without external logic.
It supports two distinct operational modes: RAM access (CE = VIL, UB/LB = VIL, SEM = VIH) and semaphore register access (CE = VIH or UB&LB = VIH, SEM = VIL). The device uses CMOS process technology and features separate upper- and lower-byte enables for multiplexed bus compatibility and precise data granularity control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 (64 Kbit), true dual-port SRAM with independent left/right address/data/control paths |
| Access Time (tRC) | 55 ns max - defines minimum read cycle duration for reliable timing in 18 MHz synchronous systems |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families and standard 5V industrial power rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications requiring thermal robustness |
| Standby Current (ISB3) | 1 µA typical - enables ultra-low-power battery backup mode with 2V data retention |
| Package | 100-pin Thin Quad Flatpack (TQFP), lead-free and RoHS-compliant per ordering code PFI8 |
| I/O Voltage Levels | TTL-compatible inputs (VIH = 2.2 V min, VIL = 0.8 V max); outputs drive VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ +4 mA |
Pinout & Package
7024L55PFI8 is housed in a 100-pin TQFP (PNG100) package measuring 14 mm × 14 mm × 1.4 mm, with exposed thermal pad and standard gull-wing leads. Pin functions are symmetrically distributed across four sides to support balanced PCB layout and signal integrity in high-speed dual-bus designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit independent address buses per port; support 4K-word addressing (0–4095) on each side |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data I/O (Left/Right) | 16-bit parallel data path per port; supports simultaneous read/write to same or different locations |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; when both high, device enters ISB1 standby (50 µA typ. for L version) |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; high = read or high-impedance output state |
| OEL / OER | Output Enable (Left/Right) | Active-low controls output drivers; allows tri-state control independent of R/W state |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select (Left/Right) | Enable 8-bit granularity writes/reads; essential for multiplexed bus interfacing and partial-word updates |
| SEML / SEMR | Semaphore Enable (Left/Right) | Active-low selects semaphore register access mode (A0–A2 address 8 flags); enables inter-port sync without software overhead |
| INTL / INTR, BUSYL / BUSYR | Interrupt & Busy Flags (Left/Right) | Push-pull outputs; BUSY indicates port contention; INT signals semaphore or arbitration event; no external pull-ups required |
| M/S | Master/Slave Select | High = Master (BUSY output); Low = Slave (BUSY input); enables error-free cascading of multiple devices for >32-bit word systems |
| VCC / GND | Power & Ground | Multiple VCC/GND pins distributed for low-noise operation; all must be connected per datasheet note |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent reads/writes to any memory location - eliminates arbitration wait states in real-time DSP co-processing |
| On-Chip Semaphore Logic | Eight hardware semaphore flags (addressed by A0–A2) allow atomic lock/unlock operations between ports without CPU intervention |
| Master/Slave Cascading | Single M/S pin configures device as master (drives BUSY) or slave (samples BUSY), enabling scalable 32-bit+ memory expansion without glue logic |
| Battery Backup Retention | Maintains data at 2V supply with only 100 µA typical ICCDR - supports fail-safe state preservation during main power loss |
| Asynchronous Port Operation | No clock required; each port operates independently with its own CE/R/W/OE timing - simplifies integration into heterogeneous system-on-module designs |
Applications
| Radar Signal Processing | Avionics I/O Controller |
|---|---|
|
Use Scenario: Real-time buffering of ADC samples and FFT results between FPGA-based front-end and ARM-based host processor. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-wait-state shared memory; left port interfaces FPGA, right port interfaces ARM bus, with BUSY flag preventing concurrent writes to same address. Use Value: Eliminates DMA handshaking overhead and guarantees deterministic latency (<55 ns) for time-critical pulse-Doppler processing loops. |
Use Scenario: Interfacing flight control computer (FCC) with sensor acquisition unit (SAU) in DO-254-certified avionics module. IC Role / Device Role / Timing Role: Provides fault-tolerant shared memory with hardware semaphore for safe cross-domain data exchange; M/S configuration enables redundant channel pairing. Use Value: Meets RTCA/DO-254 timing assurance requirements via deterministic arbitration and no-software arbitration logic. |
| Industrial PLC Communication Bridge | Digital Audio Mixing Engine |
|
Use Scenario: Bridging Modbus RTU master (RS-485) and EtherCAT slave (dual-port interface) in programmable logic controller backplane. IC Role / Device Role / Timing Role: Left port handles serial protocol engine; right port feeds real-time Ethernet MAC; semaphores coordinate buffer ownership. Use Value: Enables deterministic <100 µs inter-protocol handoff latency without OS scheduling jitter or interrupt masking. |
Use Scenario: Shared sample buffer between audio DSP core (left port) and digital I/O interface (right port) in professional mixing console. IC Role / Device Role / Timing Role: Serves as ping-pong memory for 24-bit/96 kHz stereo streams; UBL/LBL enables independent left/right channel updates. Use Value: Supports glitch-free sample rate conversion and channel routing with sub-sample timing resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-55AXC | 55 ns access, 4K × 16, 3.3V core (with 5V-tolerant I/O), 100-pin TQFP; higher active current (120 mA typ.) | Requires level-shifting for pure 5V systems; better suited for mixed-voltage designs with 3.3V logic domains | Select when migrating to lower-voltage infrastructure or integrating with 3.3V FPGAs; verify voltage translation for control signals. |
| AS7C34098B-55PCN | 55 ns access, 4K × 16, 5V-only, 100-pin TQFP; no built-in semaphore logic or M/S cascading support | Lacks hardware arbitration - requires external logic or firmware coordination for multi-processor access | Choose for cost-sensitive, single-processor applications where arbitration is handled in software or external CPLD. |
Compared with CY7C024AV-55AXC and AS7C34098B-55PCN, the 7024L55PFI8 uniquely delivers integrated semaphore registers, master/slave cascading, and 1 µA full-standby current - making it optimal for battery-backed, multi-processor industrial control where hardware-enforced synchronization and ultra-low quiescent power are mandatory.
Availability
7024L55PFI8 is available at Aetrix Electronics and suitable for radar signal processing, avionics I/O controllers, and industrial PLC communication bridges requiring stable component supply across extended product lifecycles.
Supply support for 7024L55PFI8 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 timing, memory interface, RF, and sensor solutions, now part of Renesas Electronics since 2019.
The IDT7024 family was designed specifically for high-reliability, real-time dual-processor systems requiring deterministic memory access, hardware arbitration, and seamless scalability - targeting defense, aerospace, and industrial automation markets.
FAQ
What is the maximum operating temperature range for the 7024L55PFI8?
The 7024L55PFI8 is rated for industrial temperature operation from –40°C to +85°C, as confirmed in the Absolute Maximum Ratings table and Operating Conditions section of the official IDT datasheet. This range is validated across all electrical parameters including access time, standby current, and data retention performance.
Does the 7024L55PFI8 support battery backup operation, and what voltage is required?
Yes, the 7024L55PFI8 supports battery backup data retention at VCC = 2.0 V minimum, with typical data retention current of 100 µA. This capability is exclusive to the "L" (low-power) variant and is specified in Table 10 (Data Retention Characteristics) of the datasheet.
How does the M/S pin function in the 7024L55PFI8, and what happens when it is tied low?
When M/S = L, the 7024L55PFI8 operates as a Slave: BUSY becomes an input used to detect contention from a Master device, and internal arbitration defers writes until BUSY goes high. This enables synchronized cascading in multi-device 32-bit+ memory configurations without external logic.
What is the purpose of the semaphore feature in the 7024L55PFI8, and how is it accessed?
The 7024L55PFI8 provides eight hardware semaphore flags accessed via A0–A2 address lines when SEM = VIL and CE = VIH (or UB&LB = VIH). These flags enable atomic lock/unlock operations between ports, eliminating race conditions in multi-processor shared-memory systems without CPU polling or software overhead.
Is the 7024L55PFI8 pin-compatible with other speed grades in the IDT7024L family?
Yes, all IDT7024L variants - including 7024L15, 7024L20, 7024L25, 7024L35, 7024L55, and 7024L70 - share identical 100-pin TQFP (PNG100) pinout and package dimensions. Only timing parameters and temperature grading differ; no PCB redesign is needed when upgrading or downgrading speed grade.
7024L55PFI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 4K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7024L55PFI8 FAQ
1.How can I place an order for 7024L55PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7024L55PFI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 7024L55PFI8 reliable?
The price and inventory of 7024L55PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7024L55PFI8 is usually 5 days.
3.What payment methods are accepted for 7024L55PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7024L55PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7024L55PFI8?
7024L55PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7024L55PFI8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 7024L55PFI8?
For technical support, including 7024L55PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7024L55PFI8 requirements.
6.How does Aetrix verify that 7024L55PFI8 is sourced from the original manufacturer or authorized distributors?
All 7024L55PFI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 7024L55PFI8 meets industry standards.
7.What is the process for return or replacement of 7024L55PFI8?
All 7024L55PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7024L55PFI8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 7024L55PFI8 part is unused and in its original packaging.
Return procedure for 7024L55PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7024L55PFI8 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
