My Inquiry
My Account
Renesas 7133LA55PFI8
- Part No.:
- 7133LA55PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133LA55PFI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,804
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT7133LA55PFI8 from Integrated Device Technology (IDT) is a high-speed 2K × 16 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns maximum read cycle time, industrial temperature range (–40°C to +85°C), and low-power LA variant consuming 1050 mW active / 1 mW standby power. It enables error-free 32-bit-or-wider memory expansion in real-time embedded systems requiring concurrent CPU/DSP access.
For engineers reviewing the IDT7133LA55PFI8 datasheet, IDT7133LA55PFI8 pinout, IDT7133LA55PFI8 application, or IDT7133LA55PFI8 equivalent, key selection considerations include its open-drain BUSY output requiring pull-up, byte-level write control per port, 2V data retention capability, and compatibility with MASTER/SLAVE width-expansion architectures using IDT7143LA devices.
Technical Context
IDT7133LA55PFI8 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses - enabling simultaneous read/write access to any memory location without internal synchronization overhead. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR flags and gating write signals when address matches occur.
The device supports TTL-compatible signaling at 5.0 V ±10%, includes separate upper/lower byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB), and features automatic power-down via chip enable (CE) with CMOS-level standby modes achieving ≤0.2 mA full-standby current. Battery backup operation retains data down to 2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit word access per port |
| Access Time | 55 ns max read cycle time (tRC); ensures deterministic latency for real-time DSP/CPU co-processing |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); compatible with standard TTL logic rails and legacy 5 V systems |
| Operating Temperature | –40°C to +85°C industrial grade; validated for extended thermal cycling in industrial control hardware |
| Power Consumption | 1050 mW typical active; 1 mW typical standby; enables low-quiescent-power battery-backed operation |
| Data Retention | 2 V minimum VCC for data retention; sustains memory state during brown-out or backup-battery mode |
| Package | 68-pin PLCC (PLG68); surface-mount compatible with automated assembly and thermal reliability up to 85°C ambient |
Pinout & Package
68-pin Plastic Leaded Chip Carrier (PLCC, package code PLG68) with 0.050" lead pitch; body size ≈ 0.95" × 0.95" × 0.17"; requires both VCC pins connected to 5 V supply and both GND pins tied to ground for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L | Left port address inputs | 11-bit address bus for left-side memory access (2K = 211) |
| A0R–A10R | Right port address inputs | Independent 11-bit address bus for right-side access; enables true concurrency |
| I/O0L–I/O15L | Left port bidirectional data | 16-bit data path; high-impedance when OEL or CEL inactive |
| I/O0R–I/O15R | Right port bidirectional data | 16-bit data path; electrically isolated from left port I/O |
| CEL / CER | Chip enable (active low) | Controls port activation and power-down; CE HIGH → standby mode |
| R/WLUB / R/WLLB | Left port byte write enables | Separate controls for upper/lower byte writes; enables partial-word updates |
| R/WRUB / R/WRLB | Right port byte write enables | Enables atomic 8-bit writes on right port without disturbing adjacent bytes |
| OEL / OER | Output enable (active low) | Gates output drivers; allows shared bus usage with tristate control |
| BUSYL / BUSYR | Busy flag (open-drain output) | Indicates port contention; requires external pull-up; used for arbitration stall |
| VCC (×2) | Power supply | Both pins must be connected to 5 V; ensures stable core and I/O voltage distribution |
| GND (×2) | Ground reference | Both pins must be connected to system ground; minimizes noise coupling and IR drop |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external logic; eliminates race conditions in dual-CPU systems |
| Byte-selectable write control | Independent upper/lower byte enables per port allow 8-bit updates without read-modify-write cycles |
| Open-drain BUSY outputs | Enable wired-OR arbitration across multiple MASTER/SLAVE configurations; simplifies interrupt generation |
| 2V data retention | Maintains stored data during power loss or battery backup; supports fail-safe state preservation |
| MASTER/SLAVE width expansion | One IDT7133LA55PFI8 MASTER coordinates arbitration for multiple IDT7143LA SLAVES to build 32+ bit wide memory |
| TTL-compatible interface | Direct connection to legacy 5 V microcontrollers, DSPs, and FPGAs without level-shifting circuitry |
Applications
| Industrial Motion Control | Digital Signal Processing Systems |
|---|---|
Use Scenario: Real-time servo loop coordination between motion controller (left port) and position encoder interface (right port). IC Role / Device Role / Timing Role: Dual-port RAM acts as synchronized data exchange buffer with deterministic 55 ns access for position/velocity updates. Use Value: Eliminates software polling or interrupt latency; enables sub-microsecond inter-processor communication for jitter-free motor control. |
Use Scenario: Shared coefficient/data memory between host processor (left port) and DSP accelerator (right port) in radar signal chain. IC Role / Device Role / Timing Role: Provides concurrent read/write access to filter coefficients and streaming samples without pipeline stalls. Use Value: Sustains full throughput of 55 ns read cycles during continuous DMA transfers, preserving real-time FFT processing deadlines. |
| Telecom Line Card Buffering | Avionics Data Acquisition |
Use Scenario: Frame buffering between TDM switch fabric (left port) and packet processor (right port) in multi-service access gateways. IC Role / Device Role / Timing Role: Acts as non-blocking dual-port FIFO with byte-enable granularity for HDLC/PPP frame assembly. Use Value: Prevents frame loss during bursty traffic by decoupling fixed-rate TDM and variable-rate IP processing domains. |
Use Scenario: Redundant sensor data logging where flight computer (left port) writes telemetry while health monitor (right port) reads for validation. IC Role / Device Role / Timing Role: Provides fault-tolerant shared memory with BUSY arbitration to prevent conflicting writes during transient faults. Use Value: Ensures data integrity under EMI stress via hardware-enforced write inhibition - no software arbitration required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7143LA55PFI8 | SLAVE-only variant; BUSY pins are inputs (not outputs); no on-chip arbitration logic | Used only in width-expanded systems paired with IDT7133LA55PFI8 MASTER; cannot operate standalone as arbitrator | Select when building 32+ bit memory arrays requiring coordinated arbitration - must pair with IDT7133LA55PFI8 |
| CY7C1335KV18-55BGXI | 32K × 18 QDR SRAM; 55 ns read latency but synchronous interface; 1.8 V core / 3.3 V I/O | Targets high-bandwidth packet buffering in networking ASICs; incompatible pinout and protocol | Choose for higher density and burst-mode throughput; not drop-in - requires clock domain and interface redesign |
Compared with IDT7143LA55PFI8 and CY7C1335KV18-55BGXI, IDT7133LA55PFI8 uniquely provides autonomous MASTER arbitration, 5 V TTL compatibility, and industrial temperature support - making it irreplaceable in legacy real-time control systems requiring hardware-enforced contention resolution without external logic.
Availability
IDT7133LA55PFI8 is available at Aetrix Electronics and suitable for industrial motion control, avionics data acquisition, and telecom line card buffering requiring stable component supply across extended product lifecycles.
Supply support for IDT7133LA55PFI8 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
Integrated Device Technology (IDT) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.
IDT7133LA55PFI8 belongs to the IDT7133/7143 dual-port SRAM family designed specifically for real-time embedded systems requiring deterministic, contention-free concurrent memory access between heterogeneous processors.
FAQ
What is the operating temperature range for IDT7133LA55PFI8?
IDT7133LA55PFI8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per manufacturer specifications and supports deployment in harsh environments such as factory automation controllers and outdoor telecom equipment. The LA suffix confirms low-power design optimized for this grade.
Does IDT7133LA55PFI8 support battery backup operation?
Yes, IDT7133LA55PFI8 supports battery backup operation with guaranteed data retention at VCC ≥ 2.0 V. In this mode, standby current drops to ≤4 µA (typical), enabling long-term memory hold during main power loss - critical for applications like avionics black boxes and medical device state recovery.
How does the BUSY arbitration work on IDT7133LA55PFI8?
IDT7133LA55PFI8 asserts BUSYL or BUSYR when both ports attempt access to the same memory address. As a MASTER device, its open-drain BUSY outputs require external pull-up resistors. The asserted BUSY signal gates write operations on the contending port, preventing data corruption without software intervention.
Can IDT7133LA55PFI8 be used without external pull-up resistors on BUSY pins?
No - IDT7133LA55PFI8 BUSY pins are open-drain outputs and require external pull-up resistors to function correctly. Without them, BUSY signals remain floating and arbitration fails. Typical values are 4.7 kΩ to 5 V, as confirmed in the functional block diagram and pin description notes.
What package type is used for IDT7133LA55PFI8?
IDT7133LA55PFI8 uses a 68-pin Plastic Leaded Chip Carrier (PLCC), designated PLG68. This surface-mount package has a 0.95" × 0.95" footprint and 0.17" height, with dual VCC and GND pins requiring proper PCB routing to ensure stable power delivery and noise immunity.
7133LA55PFI8 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:
- 32Kbit
- Memory Organization:
- 2K 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)
7133LA55PFI8 FAQ
1.How can I place an order for 7133LA55PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA55PFI8 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 7133LA55PFI8 reliable?
The price and inventory of 7133LA55PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA55PFI8 is usually 5 days.
3.What payment methods are accepted for 7133LA55PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA55PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA55PFI8?
7133LA55PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA55PFI8 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 7133LA55PFI8?
For technical support, including 7133LA55PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA55PFI8 requirements.
6.How does Aetrix verify that 7133LA55PFI8 is sourced from the original manufacturer or authorized distributors?
All 7133LA55PFI8 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 7133LA55PFI8 meets industry standards.
7.What is the process for return or replacement of 7133LA55PFI8?
All 7133LA55PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA55PFI8, 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 7133LA55PFI8 part is unused and in its original packaging.
Return procedure for 7133LA55PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA55PFI8 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…
