My Inquiry
My Account
Renesas 71024S20YGI
- Part No.:
- 71024S20YGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
71024S20YGI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,693
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
71024S20YGI from Renesas Electronics is a 128K × 8-bit high-speed CMOS static RAM with 20 ns access time, industrial temperature range (–40°C to +85°C), single 5V supply operation, and TTL-compatible bidirectional I/O. It serves as main or cache memory in embedded controllers, industrial PLCs, and legacy communication interface buffers requiring deterministic asynchronous read/write timing.
For engineers reviewing the 71024S20YGI datasheet, 71024S20YGI pinout, 71024S20YGI application, or 71024S20YGI equivalent, key selection criteria include verified 20 ns tAA/tRC timing under industrial conditions, dual chip select architecture for bank decoding, OE-controlled output enable latency ≤8 ns, and SOJ-32 package compatibility with legacy PCB footprints.
Technical Context
The 71024S20YGI implements fully static asynchronous logic with no clocks or refresh cycles required. Its dual CS architecture (CS1 active-low, CS2 active-high) enables hierarchical memory mapping, while OE allows independent output gating without affecting internal state.
All inputs and outputs are TTL-compatible (VIH ≥2.2 V, VIL ≤0.8 V), and the device supports three standby modes: ISB (TTL-level deselect, 40 mA), ISB1 (CMOS-level full standby, 10 mA), and dynamic ICC = 140 mA at fMAX under industrial conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access Time (tAA) | 20 ns max at VCC = 4.5–5.5 V, –40°C to +85°C - guarantees worst-case read latency in industrial environments |
| Read Cycle Time (tRC) | 20 ns max - defines minimum consecutive read interval without address hold violation |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5V TTL/CMOS system rails without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, motor drives, and outdoor infrastructure |
| Standby Current (ISB1) | 10 mA max - enables low-power sleep mode when both CS1 ≥VHC and CS2 ≤VLC |
| Output Enable Delay (tOE) | 8 ns max - ensures rapid data availability after OE assertion in burst-read applications |
Pinout & Package
71024S20YGI is housed in a 32-pin Plastic SOJ (Small Outline J-Lead) package, 400 mil body width (PBG32), with gull-wing leads suitable for wave or reflow soldering. Pin 1 is marked by a notch or dot; pin numbering follows standard SOJ top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K address space; A16 is MSB |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states |
| CS1, CS2 | Chip Select Inputs | CS1 active-low, CS2 active-high - dual-select logic enables memory banking without external decode logic |
| WE | Write Enable | Active-low write strobe; LOW during write cycle with CS1/CS2 asserted |
| OE | Output Enable | Active-low gate for output drivers; enables read data without affecting internal state |
| VCC, GND | Power Supply | Single 5V supply; decoupling required per JEDEC SOJ guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Static Operation | No clock, no refresh - eliminates timing-critical system synchronization and simplifies controller firmware |
| Dual Chip Select Architecture | CS1/CS2 logic reduces external decoding complexity in multi-bank memory systems |
| TTL-Compatible I/O | Direct interface with legacy 5V microcontrollers, FPGAs, and ASICs without level translators |
| Three Power Modes | Dynamic (140 mA), TTL-standby (40 mA), and CMOS-standby (10 mA) - enables granular power management |
| Industrial Temperature Qualification | Full AC/DC specs guaranteed over –40°C to +85°C - validated for uncontrolled industrial enclosures |
Applications
| Industrial PLC Memory Buffer | Legacy Communication Interface FIFO |
|---|---|
Use Scenario: Storing real-time I/O scan data between CPU and fieldbus modules in programmable logic controllers. IC Role / Device Role / Timing Role: Asynchronous SRAM buffer providing deterministic 20 ns read/write access for cyclic process data exchange. Use Value: Eliminates wait states in ladder logic execution cycles and ensures jitter-free data handoff across isolation barriers. | Use Scenario: Acting as transmit/receive FIFO between UART/DMA engine and RS-485 transceiver in industrial gateways. IC Role / Device Role / Timing Role: Byte-wide parallel memory holding protocol packets prior to serial framing. Use Value: Sustains 115.2 kbps full-duplex throughput with zero packet loss under burst traffic due to guaranteed 20 ns tRC. |
| Embedded Controller Boot ROM Shadow | Test Equipment Pattern Generator Memory |
Use Scenario: Shadowing slower flash-based boot code into fast RAM during initialization of ARM7/8 or ColdFire-based controllers. IC Role / Device Role / Timing Role: High-speed instruction/data cache replacement enabling sub-μs fetch latency during critical startup phase. Use Value: Reduces boot time by >35% versus direct flash execution, meeting <500 ms safety-critical startup windows. | Use Scenario: Storing digital stimulus patterns for automated test equipment generating precise timing waveforms. IC Role / Device Role / Timing Role: Deterministic-access memory delivering pattern bytes to high-speed DAC or FPGA sequencer. Use Value: Enables 50 MHz pattern update rate with zero timing uncertainty-critical for jitter-sensitive analog validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-45ZSXIT | 5V, 128K×8, 45 ns access, SOJ-32, industrial temp - slower timing, lower ICC (35 mA) | Suitable for cost-sensitive, non-real-time buffering where 45 ns latency is acceptable | Select when power budget <35 mA dominates over speed; not drop-in for 20 ns designs |
| AS6C1008-20TIN | 5V, 128K×8, 20 ns access, TSOP-32, industrial temp - same speed, different package (TSOP vs SOJ) | Requires PCB layout change; preferred for new designs targeting higher density or automated assembly | Select for new layouts needing surface-mount compatibility; verify thermal pad and trace impedance match |
Compared with CY62128EV30LL-45ZSXIT and AS6C1008-20TIN, the 71024S20YGI uniquely delivers 20 ns performance in a legacy SOJ-32 footprint with proven industrial reliability-making it the only choice for drop-in upgrades of aging 5V systems where board rework is prohibited.
Availability
71024S20YGI is available at Aetrix Electronics and suitable for industrial PLCs, legacy communication gateways, and embedded controller boot memory requiring stable component supply across extended product lifecycles.
Supply support for 71024S20YGI 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.
The 71024S20YGI belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for 5V industrial systems requiring pin-compatible replacements and long-term supply assurance.
FAQ
What is the maximum operating frequency supported by the 71024S20YGI?
The 71024S20YGI does not use a clock and therefore has no operating frequency specification. Its performance is defined by timing parameters: maximum read cycle time (tRC) is 20 ns, corresponding to an effective 50 MHz burst rate. The 71024S20YGI achieves this using fully static asynchronous logic, eliminating setup/hold timing constraints associated with clocked memories.
Does the 71024S20YGI require external refresh circuitry?
No, the 71024S20YGI is a fully static RAM and requires no refresh cycles or external refresh circuitry. Its CMOS latching cells retain data indefinitely as long as VCC is applied within specification (4.5–5.5 V) and temperature remains within –40°C to +85°C. This eliminates refresh overhead in microcontroller-based systems and simplifies design compared to DRAM solutions.
Can the 71024S20YGI be used with modern 3.3V microcontrollers?
The 71024S20YGI is strictly a 5V-only device with TTL-compatible input thresholds (VIH ≥2.2 V, VIL ≤0.8 V) and 5V output swing. Direct interface with 3.3V controllers requires level translation on all address, data, and control lines. Using it without translation risks input overvoltage damage to the 3.3V device and unreliable logic levels. The 71024S20YGI is intended for legacy 5V system integration.
What is the meaning of "YGI" in the part number 71024S20YGI?
In the ordering code 71024S20YGI, "Y" denotes the 400-mil SOJ package (PBG32), "G" indicates green (lead-free/RoHS-compliant) construction, and "I" specifies industrial temperature grade (–40°C to +85°C). The "S20" suffix confirms 20 ns speed grade. Thus, 71024S20YGI explicitly identifies a lead-free, industrial-grade, 20 ns, 400-mil SOJ-packaged version of the IDT71024 SRAM.
How does the dual chip select (CS1/CS2) architecture of the 71024S20YGI simplify memory decoding?
The 71024S20YGI's CS1 (active-low) and CS2 (active-high) inputs implement AND-gated selection logic: the device activates only when CS1 = L and CS2 = H. This allows direct connection to upper address bits (e.g., A17/A18) without external NAND gates, enabling clean 128K memory banking in systems with larger address spaces. This architecture reduces gate count and propagation delay versus single-CS alternatives, preserving timing margins in the 71024S20YGI's 20 ns operation window.
71024S20YGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
71024S20YGI FAQ
1.How can I place an order for 71024S20YGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S20YGI 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 71024S20YGI reliable?
The price and inventory of 71024S20YGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S20YGI is usually 5 days.
3.What payment methods are accepted for 71024S20YGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S20YGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S20YGI?
71024S20YGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S20YGI 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 71024S20YGI?
For technical support, including 71024S20YGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S20YGI requirements.
6.How does Aetrix verify that 71024S20YGI is sourced from the original manufacturer or authorized distributors?
All 71024S20YGI 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 71024S20YGI meets industry standards.
7.What is the process for return or replacement of 71024S20YGI?
All 71024S20YGI units undergo pre-shipment inspection (PSI). If there is an issue with 71024S20YGI, 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 71024S20YGI part is unused and in its original packaging.
Return procedure for 71024S20YGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71024S20YGI 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…
