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Renesas 7130SA100C

Name: 7130SA100C
Brand: Renesas
SKU: 7130SA100C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7130SA100C

Manufacturer:: Renesas

Category:: Memory

Package:: 48-DIP (0.600", 15.24mm)

Datasheet:: 7130SA100C.pdf

Description:: IC SRAM 8KBIT PARALLEL SB48

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Product details

Overview

7130SA100C from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 100ns maximum read/write cycle time, open-drain BUSY outputs requiring pull-up resistors, and TTL-compatible 5V ±10% operation - used in real-time inter-processor communication buffers in industrial motion controllers.

For engineers reviewing the 7130SA100C datasheet, 7130SA100C pinout, 7130SA100C application, or 7130SA100C equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag interaction, standby current values at 100ns speed grade, and exact package mapping for DIP/LCC/PLCC/TQFP variants.

Technical Context

The 7130SA100C implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous access to the same memory location via BUSY flag assertion, with tBDD = 65ns (max) for 100ns-grade devices.

It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSYL/BUSYR outputs (requiring external pull-ups), and provides INTL/INTR flags for port-to-port interrupt signaling - all operating within commercial temperature range (0°C to +70°C) at V_CC = 4.5–5.5V.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	1K × 8 (1024 words × 8 bits), dual-port SRAM with independent left/right access paths
Max Read/Write Cycle Time	100ns - defines minimum time between successive read or write operations on either port
Supply Voltage	4.5V to 5.5V - TTL-compatible single supply; no separate V_BB or backup rail required
Active Current (ICC)	110mA (typ) - dynamic current when both ports active at f_MAX, critical for thermal design in dense PCB layouts
Standby Current (ISB1)	20mA (max) - TTL-level standby current with both CE pins high, enabling low-power idle states
Operating Temperature	0°C to +70°C - commercial-grade rating; not rated for industrial (–40°C to +85°C) or military ranges
BUSY Output Type	Open-drain - requires external pull-up resistor; enables wired-OR arbitration across multiple masters

Pinout & Package

7130SA100C is available in 48-pin DIP (PDG48/SB48), 48-pin LCC (LC48), 48-pin ceramic flatpack (FP48), 52-pin PLCC (PLG52), and 64-pin TQFP/STQFP (PPG64/PNG64) packages. Pin functions are identical across all packages; only mechanical dimensions and thermal characteristics differ.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A9L	Left port address inputs	10-bit address bus for left-side memory access; latched internally on CE_L or R/W_L transition
A0R–A9R	Right port address inputs	10-bit address bus for right-side memory access; independent timing from left port
I/O0L–I/O7L	Left port bidirectional data	8-bit tri-state I/O bus; direction controlled by R/W_L; high-impedance when OEL = VIH or CEL = VIH
I/O0R–I/O7R	Right port bidirectional data	8-bit tri-state I/O bus; direction controlled by R/W_R; high-impedance when OER = VIH or CER = VIH
CEL, CER	Chip enable inputs	Active-low enables for respective ports; disable port circuitry to reduce ISB1/ISB2 current
OEL, OER	Output enable inputs	Active-low controls I/O drivers; when high, forces I/O pins into high-impedance state
R/WL, R/WR	Read/write direction controls	High = read, low = write; determines data flow direction on I/O buses during CE-active cycles
BUSYL, BUSYR	Arbitration status outputs	Open-drain outputs indicating port contention; require external 4.7kΩ pull-up to V_CC; asserted low during write conflict
INTL, INTR	Interrupt request outputs	Open-drain flags set/cleared by specific address writes (e.g., A9–A0 = 3FF_H); used for inter-processor signaling
V_CC, GND	Power and ground	Multiple V_CC (pins 14, 27, 36, 45) and GND (pins 1, 26, 33, 48) pins ensure low-impedance supply distribution

Key Features

Feature	Design Value
On-chip arbitration logic	Resolves simultaneous access to same address without external logic; uses BUSY flag to stall conflicting writes
Port-to-port interrupt signaling	INTL/INTR flags set/reset via dedicated address writes (e.g., 3FF_H), enabling deterministic inter-processor handshaking
Asynchronous dual-port operation	Independent timing on left/right ports eliminates synchronization overhead; supports mixed read/write concurrency
Open-drain BUSY outputs	Enable wired-OR arbitration across multiple 7130 devices; compatible with standard 5V pull-up networks
Low-power standby modes	ISB1 = 20mA (max) with both CE high; ISB3 = 1.0µA (typ) with CMOS-level CE inputs - reduces system power in idle states

Applications

Industrial Motion Controller Buffer	Real-Time Data Acquisition Node
Use Scenario: Two microcontrollers share sensor data and motion commands via shared memory in a CNC machine controller. IC Role / Device Role / Timing Role: 7130SA100C acts as MASTER dual-port SRAM buffer; left port connects to motion CPU, right port to I/O manager; BUSY arbitration prevents write collisions during axis position updates. Use Value: Eliminates need for discrete arbitration logic and handshake signals; 100ns cycle time supports 10MHz servo loop rates with deterministic latency.	Use Scenario: High-speed analog-to-digital sampling system streams data from ADC to host processor while simultaneously accepting configuration commands. IC Role / Device Role / Timing Role: 7130SA100C serves as ping-pong buffer; left port receives ADC data bursts, right port feeds DMA engine; INTL/INTR flags signal buffer full/empty conditions. Use Value: Enables zero-wait-state data transfer between asynchronous clock domains; open-drain interrupts interface directly with FPGA or MCU GPIOs.
Communications Protocol Bridge	Redundant Control System Memory
Use Scenario: Legacy RS-485 fieldbus node communicates with modern Ethernet gateway using protocol translation firmware running on dual-core SoC. IC Role / Device Role / Timing Role: 7130SA100C provides shared command/status table; core A writes command packets, core B reads and executes; BUSY flags prevent concurrent register overwrites. Use Value: Guarantees atomic access to shared control registers; 100ns timing ensures sub-microsecond inter-core coordination latency.	Use Scenario: Safety-critical PLC uses dual-channel architecture where primary and backup CPUs maintain synchronized state via shared memory. IC Role / Device Role / Timing Role: 7130SA100C stores mirrored process variables; primary CPU writes updates, backup CPU reads for validation; arbitration prevents inconsistent snapshots during write bursts. Use Value: Provides hardware-enforced consistency without software locks; open-drain BUSY outputs integrate with watchdog circuits monitoring arbitration health.

Industrial Motion Controller Buffer

Real-Time Data Acquisition Node

Use Scenario: Two microcontrollers share sensor data and motion commands via shared memory in a CNC machine controller.

IC Role / Device Role / Timing Role: 7130SA100C acts as MASTER dual-port SRAM buffer; left port connects to motion CPU, right port to I/O manager; BUSY arbitration prevents write collisions during axis position updates.

Use Value: Eliminates need for discrete arbitration logic and handshake signals; 100ns cycle time supports 10MHz servo loop rates with deterministic latency.

Use Scenario: High-speed analog-to-digital sampling system streams data from ADC to host processor while simultaneously accepting configuration commands.

IC Role / Device Role / Timing Role: 7130SA100C serves as ping-pong buffer; left port receives ADC data bursts, right port feeds DMA engine; INTL/INTR flags signal buffer full/empty conditions.

Use Value: Enables zero-wait-state data transfer between asynchronous clock domains; open-drain interrupts interface directly with FPGA or MCU GPIOs.

Communications Protocol Bridge

Redundant Control System Memory

Use Scenario: Legacy RS-485 fieldbus node communicates with modern Ethernet gateway using protocol translation firmware running on dual-core SoC.

IC Role / Device Role / Timing Role: 7130SA100C provides shared command/status table; core A writes command packets, core B reads and executes; BUSY flags prevent concurrent register overwrites.

Use Value: Guarantees atomic access to shared control registers; 100ns timing ensures sub-microsecond inter-core coordination latency.

Use Scenario: Safety-critical PLC uses dual-channel architecture where primary and backup CPUs maintain synchronized state via shared memory.

IC Role / Device Role / Timing Role: 7130SA100C stores mirrored process variables; primary CPU writes updates, backup CPU reads for validation; arbitration prevents inconsistent snapshots during write bursts.

Use Value: Provides hardware-enforced consistency without software locks; open-drain BUSY outputs integrate with watchdog circuits monitoring arbitration health.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C135-100AXC	1K × 8, 100ns, 5V, but lacks on-chip arbitration logic and BUSY/INT flags; requires external logic for contention resolution	Suitable only in systems with dedicated arbitration controller or software-managed access; no hardware interrupt signaling	Select when cost sensitivity outweighs need for integrated arbitration; verify external logic fits timing budget (tBDD = 65ns not replicable)
IDT7140SA100C	SLAVE dual-port companion; identical speed/package but no arbitration logic; BUSY pins are inputs only; no INT flag generation	Used only in MASTER/SLAVE configurations where 7130SA100C handles arbitration; cannot operate stand-alone as MASTER	Choose only when expanding to 16-bit+ data width using 7130SA100C as MASTER; not a functional replacement

Compared with CY7C135-100AXC and IDT7140SA100C, the 7130SA100C uniquely integrates arbitration, BUSY flag generation, and port-to-port interrupts - eliminating external components required by CY7C135 and enabling autonomous MASTER operation unlike IDT7140SA100C.

Availability

7130SA100C is available at Aetrix Electronics and suitable for industrial motion controllers, real-time data acquisition nodes, communications protocol bridges, and redundant control system memory requiring stable component supply across extended production lifecycles.

Supply support for 7130SA100C 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 semiconductor company specializing in timing, memory interface, RF, and sensor solutions, acquired by Renesas Electronics in 2019.

The 7130SA100C belongs to IDT's legacy dual-port SRAM product line designed for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and low-latency shared memory access are critical.

FAQ

What is the maximum operating frequency supported by the 7130SA100C?

The 7130SA100C does not operate at a fixed clock frequency; it is an asynchronous device. Its 100ns maximum read/write cycle time (t_RC) corresponds to a theoretical maximum sustained throughput of 10 MHz per port. Actual system bandwidth depends on address setup, hold, and enable timing margins - all specified in the AC Electrical Characteristics tables for 100ns-grade devices.

Does the 7130SA100C require external pull-up resistors on BUSY pins?

Yes, the 7130SA100C's BUSYL and BUSYR pins are open-drain outputs and require external pull-up resistors to V_CC. The datasheet specifies a typical value of 4.7kΩ. Without pull-ups, BUSY signals cannot assert HIGH, breaking arbitration functionality and causing undefined write behavior during port contention.

Can the 7130SA100C be used without the arbitration logic enabled?

Yes - arbitration is inherent to the device architecture but only activates during simultaneous access to the same memory location. If software guarantees non-overlapping access (e.g., strict time-division multiplexing), BUSY flags remain deasserted and arbitration logic remains idle. However, the 7130SA100C still requires proper handling of BUSY outputs per Truth Table III to avoid unintended write inhibition.

What is the difference between 7130SA100C and 7130LA100C?

The 7130SA100C uses standard active power consumption (550mW typ) and lacks battery backup capability. The 7130LA100C variant adds data retention down to 2.0V with ICCDR ≤ 4000µA (military grade), enabling low-voltage holdover during main supply interruption - a feature absent in the SA version. Both share identical timing, pinout, and arbitration logic.

Is the 7130SA100C pin-compatible with other speed grades like 7130SA25C?

Yes - all 7130SA-xC variants (20ns, 25ns, 35ns, 55ns, 100ns) share identical pinout, package footprint, and DC/AC interface specifications. Only timing parameters differ. A 7130SA100C can replace a faster grade in lower-speed designs without PCB changes, though timing margins must be re-verified per application requirements.

7130SA100C Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 48-DIP (0.600", 15.24mm)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 8Kbit

Memory Organization:: 1K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 100ns

Access Time:: 100 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 48-SIDE BRAZED

7130SA100C FAQ

1.How can I place an order for 7130SA100C through Aetrix?

Please submit a Request for Quotation (RFQ) for 7130SA100C 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 7130SA100C reliable?

The price and inventory of 7130SA100C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA100C is usually 5 days.

3.What payment methods are accepted for 7130SA100C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA100C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7130SA100C?

7130SA100C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7130SA100C 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 7130SA100C?

For technical support, including 7130SA100C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA100C requirements.

6.How does Aetrix verify that 7130SA100C is sourced from the original manufacturer or authorized distributors?

All 7130SA100C 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 7130SA100C meets industry standards.

7.What is the process for return or replacement of 7130SA100C?

All 7130SA100C units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA100C, 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 7130SA100C part is unused and in its original packaging.

Return procedure for 7130SA100C:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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