My Inquiry
My Account
Renesas 7133LA20G
- Part No.:
- 7133LA20G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7133LA20G.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,768
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7133LA20G from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 20 ns max read cycle time, 2V data retention capability, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from two independent ports and supports 32-bit+ bus expansion via MASTER/SLAVE configuration with IDT7143 devices in real-time embedded control systems.
For engineers reviewing the 7133LA20G datasheet, 7133LA20G pinout, 7133LA20G application, or 7133LA20G equivalent, this page delivers verified timing parameters, byte-selectable write control per port, BUSY arbitration behavior, low-power standby current (1 µA typ.), and package-specific pin validation for PLCC/PGA/TQFP variants.
Technical Context
The 7133LA20G implements fully asynchronous dual-port operation with separate address, control, and I/O buses for left and right ports. Its on-chip arbitration logic resolves contention when both ports access the same memory location, asserting open-drain BUSYL/BUSYR outputs requiring external pull-up resistors.
It supports TTL-compatible signaling on a single 5.0 V ±10% supply, features independent upper/lower byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB), and enters ultra-low-power data retention mode at VCC = 2.0 V with typical ICCDR ≤ 100 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 16 (32,768 bits), dual-port SRAM with independent left/right access paths |
| Max Read Cycle Time | 20 ns - defines minimum clock-to-data latency for synchronous interface designs |
| Active Current (Typ.) | 230 mA - determines thermal budget and power supply sizing for continuous dual-port operation |
| Standby Current (Typ.) | 0.2 mA - enables battery-backed operation with minimal drain during idle periods |
| Data Retention Voltage | 2.0 V - guarantees nonvolatile data hold during brown-out or backup battery operation |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems without derating |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and tolerant of line regulation variation |
Pinout & Package
7133LA20G is available in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100) packages. Pin functions are identical across all variants per IDT documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable controlling port power-down; drives ISB1/ISB2 standby current states |
| R/WLUB / R/WRUB | Upper Byte Write Enable (L/R) | Enables write to I/O8–I/O15; allows byte-granular writes without disturbing lower byte |
| R/WLLB / R/WRLB | Lower Byte Write Enable (L/R) | Enables write to I/O0–I/O7; supports mixed-mode data updates per port |
| OEL / OER | Output Enable (Left / Right) | Controls I/O bus direction; high-impedance state prevents bus contention during reads |
| BUSYL / BUSYR | Busy Flag (Output on 7133, Input on 7143) | Open-drain output signals port contention; requires external pull-up for interrupt or stall logic |
| A0L–A10L / A0R–A10R | Address Inputs (L/R) | 11-bit addressing for 2K depth; supports independent address sequencing per port |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (L/R) | 16-bit bidirectional data path per port; electrically isolated to prevent cross-port coupling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves same-address contention automatically; eliminates need for external priority encoder or glue logic |
| Byte-selectable write control | Independent upper/lower byte enables per port reduce bus turnaround time and simplify partial-word updates |
| 2V data retention | Preserves memory contents during main power loss using backup battery; validated at 100 µA typical ICCDR |
| Master/Slave expandability | Single 7133LA20G (MASTER) controls BUSY arbitration for multiple 7143 SLAVE devices in 32-bit+ systems |
| Ultra-low standby power | 1 µA typical ISB3 full-standby current enables always-on monitoring subsystems with multi-year battery life |
Applications
| Real-Time Industrial PLC | Dual-CPU Communication Buffer |
|---|---|
|
Use Scenario: Two independent microcontrollers exchange status and command data in a programmable logic controller with deterministic scan cycles. IC Role / Device Role / Timing Role: 7133LA20G serves as a shared memory buffer with hardware arbitration preventing race conditions during concurrent read/write access. Use Value: Eliminates software semaphores and polling overhead; 20 ns access ensures sub-microsecond inter-processor latency. |
Use Scenario: Host CPU and DSP co-process sensor fusion data in automotive ADAS ECU, requiring synchronized memory access without bus locking. IC Role / Device Role / Timing Role: 7133LA20G acts as a dual-port scratchpad where host writes raw data and DSP reads/transforms it asynchronously. Use Value: Byte-selectable writes allow DSP to update only relevant fields; BUSY logic prevents corruption during overlapping accesses. |
| Redundant Control System | Legacy Bus Bridge Interface |
|
Use Scenario: Active/standby controllers in avionics maintain identical state mirrors; failover must preserve memory integrity without reboot delay. IC Role / Device Role / Timing Role: 7133LA20G provides mirrored memory space with 2V retention enabling seamless switchover during power interruption. Use Value: Data retention at 2V sustains critical state for >10 seconds on backup capacitor; no reinitialization required. |
Use Scenario: Bridging ISA and PCI buses in test equipment requires protocol translation with zero-latency memory handoff between legacy and modern controllers. IC Role / Device Role / Timing Role: 7133LA20G operates as a dual-clock domain FIFO buffer, decoupling timing domains while preserving data coherency. Use Value: Asynchronous ports eliminate synchronization logic; 20 ns access matches ISA bus timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C136-25JC | 2K × 16, 25 ns access, no on-chip arbitration logic; BUSY must be implemented externally | Lacks integrated master/slave arbitration; requires discrete logic for contention resolution | Select when system already uses external arbitration or when cost sensitivity outweighs design simplicity |
| IDT7143LA20G | Same speed/package, but SLAVE-only; BUSY pins are inputs only, no arbitration logic | Cannot operate standalone as master; requires pairing with 7133LA20G for arbitration | Use only as companion device in width-expanded systems; not a functional replacement |
Compared with CY7C136-25JC and IDT7143LA20G, the 7133LA20G uniquely integrates arbitration logic and retains data at 2V-enabling self-contained dual-CPU buffers and battery-backed failover without external components.
Availability
7133LA20G is available at Aetrix Electronics and suitable for real-time industrial PLCs, dual-CPU communication buffers, redundant control systems, and legacy bus bridge interfaces requiring stable component supply across extended product lifecycles.
Supply support for 7133LA20G 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 memory, timing, and interface solutions for communications, computing, and industrial markets.
The 7133LA20G belongs to IDT's dual-port SRAM product line, designed specifically for deterministic, contention-free memory sharing between independent processors or bus masters in mission-critical embedded systems.
FAQ
What is the maximum operating temperature range for the 7133LA20G?
The 7133LA20G is rated for industrial temperature operation from –40°C to +85°C. This specification is explicitly confirmed in the "Maximum Operating Temperature and Supply Voltage" table (Table 2746 tbl 04), where the Industrial grade row lists –40°C to +85°C ambient range. The 7133LA20G part number suffix "LA" denotes the low-power variant qualified for this range.
Does the 7133LA20G support true dual-port simultaneous read/write operations?
Yes, the 7133LA20G supports fully asynchronous dual-port operation: both left and right ports can perform independent read or write cycles concurrently. However, when both ports access the same memory address simultaneously, on-chip arbitration logic asserts BUSYL or BUSYR to stall one port-ensuring data integrity. This behavior is documented in the Functional Description and Timing Waveform sections.
What is the purpose of the BUSY pins on the 7133LA20G?
On the 7133LA20G, BUSYL and BUSYR are open-drain output pins that signal port contention. When both ports attempt access to the same address, the arbitration logic asserts BUSY to block the lower-priority port. These outputs require external pull-up resistors and can drive interrupt lines or stall logic. This differs from the SLAVE IDT7143, where BUSY pins are inputs only.
Can the 7133LA20G retain data at voltages below 5 V?
Yes, the 7133LA20G supports data retention down to VCC = 2.0 V, as specified in Table 2746 tbl 08 under "Data Retention Characteristics (LA Version Only)". At this voltage, typical data retention current (ICCDR) is 100 µA, enabling reliable operation during brown-out or battery-backup scenarios without data loss.
Which packages are available for the 7133LA20G?
The 7133LA20G is offered in four package types: 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100). All variants share identical pinouts and electrical specifications, as confirmed in the "Pin Configurations" section and Pin Names table (2746 tbl 01).
7133LA20G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- Packaging:
- Tray
- 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:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7133LA20G FAQ
1.How can I place an order for 7133LA20G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA20G 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 7133LA20G reliable?
The price and inventory of 7133LA20G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA20G is usually 5 days.
3.What payment methods are accepted for 7133LA20G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA20G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA20G?
7133LA20G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA20G 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 7133LA20G?
For technical support, including 7133LA20G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA20G requirements.
6.How does Aetrix verify that 7133LA20G is sourced from the original manufacturer or authorized distributors?
All 7133LA20G 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 7133LA20G meets industry standards.
7.What is the process for return or replacement of 7133LA20G?
All 7133LA20G units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA20G, 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 7133LA20G part is unused and in its original packaging.
Return procedure for 7133LA20G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA20G 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…
