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Renesas 7034S20PF
- Part No.:
- 7034S20PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7034S20PF.pdf
- Description:
- IC SRAM 72KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
IDT7034S20PF from Integrated Device Technology is a high-speed 4K × 18 true dual-port static RAM with independent left/right ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% supply, and on-chip semaphore logic for inter-processor synchronization in shared-memory systems.
For engineers reviewing the IDT7034S20PF datasheet, IDT7034S20PF pinout, IDT7034S20PF application, or IDT7034S20PF equivalent, key selection considerations include simultaneous asynchronous read/write capability, BUSY arbitration timing (tBAA ≤20 ns), 100-pin TQFP package compatibility, and industrial temperature support (–40°C to +85°C).
Technical Context
The IDT7034S20PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port-enabling concurrent reads or writes to any memory location without contention-induced latency. Its hardware arbitration includes push-pull BUSY outputs (not open-drain) and dedicated semaphore registers (8 flags, addressed via A0–A2) for deterministic inter-processor signaling.
It supports MASTER/SLAVE cascading for 36-bit+ data width expansion using M/S pin configuration: M/S = VIH enables BUSY output flag on master; M/S = VIL configures BUSY as write-inhibit input on slave. Battery backup data retention at 2V is supported only in L-version variants; IDT7034S20PF is the S-version (850 mW active, 5 mW standby typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 18 bits (72 Kbit total, dual-port) |
| Access Time (max) | 20 ns - guarantees worst-case read cycle time under industrial conditions (–40°C to +85°C, VCC = 4.5–5.5 V) |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no level-shifting required in 5V systems |
| Active Power (typ) | 850 mW - enables high-throughput operation without thermal derating in compact layouts |
| Standby Power (typ) | 5 mW - supports low-power sleep modes when CE is high on both ports |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and communications equipment |
| Package | 100-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm - surface-mount compatible with standard reflow profiles |
Pinout & Package
Package: 100-pin TQFP (PN100), body size ≈14 mm × 14 mm × 1.4 mm; all VCC pins require connection to 5V supply, all GND pins to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit address bus per port; enables full 4K-word addressing independently on each side |
| I/O0L–I/O17L / I/O0R–I/O17R | Bidirectional Data Bus (Left/Right) | 18-bit parallel data path per port; supports byte-select (UBL/LBL, UBR/LBR) for 9-bit granularity |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable per port; controls power-down mode and memory access gating |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low signal defining direction of data transfer on respective port |
| OEL / OER | Output Enable (Left/Right) | Active-low tri-state control for I/O drivers; allows bus sharing without external buffers |
| SEML / SEMR | Semaphore Enable (Left/Right) | Active-low gate for accessing 8 semaphore flags (addressed by A0–A2) instead of RAM array |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Push-pull output (master) or input (slave); indicates address collision and blocks write execution |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain outputs asserted when opposite port writes to FFEh (left) or FFFh (right) |
| M/S | Master/Slave Select | High = master (BUSY outputs); Low = slave (BUSY inputs); determines arbitration role in cascaded arrays |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write to same memory location - eliminates software polling or lock-step coordination |
| Hardware Semaphore Logic | 8 dedicated binary flags accessible via A0–A2; enables atomic resource ownership claims between processors without CPU intervention |
| On-Chip BUSY Arbitration | Push-pull BUSY outputs resolve port-to-port contention in <20 ns; prevents data corruption during concurrent writes to identical addresses |
| MASTER/SLAVE Cascading | Single M/S pin configures device for width expansion up to 36+ bits; eliminates need for external glue logic in wide-data systems |
| Full Asynchronous Operation | No clock required - simplifies timing closure in mixed-signal or legacy bus environments (e.g., ISA, VME, custom backplanes) |
Applications
| Industrial PLC Memory Buffer | Dual-CPU Communication Bridge |
|---|---|
Use Scenario: Real-time I/O scanning and program execution across two independent CPU cores sharing sensor/actuator data. IC Role / Device Role / Timing Role: Dual-port SRAM acts as coherent shared memory with hardware-enforced mutual exclusion via semaphores and BUSY arbitration. Use Value: Eliminates software locks and reduces inter-core latency to sub-20 ns, enabling deterministic response within 100 µs control cycles. |
Use Scenario: Asymmetric multiprocessing where one CPU handles network stack and another runs real-time motion control. IC Role / Device Role / Timing Role: IDT7034S20PF provides non-blocking mailbox communication with interrupt-driven message passing (FFEh/FFFh locations). Use Value: Enables zero-copy data exchange and priority-based task handoff without bus contention or DMA overhead. |
| Telecom Line Card Buffer | Avionics Data Acquisition Hub |
Use Scenario: High-speed packet buffering between framer ASIC and host processor in T1/E1 line interface units. IC Role / Device Role / Timing Role: Left port interfaces framer (write-only burst), right port serves host CPU (read-only polled access) with independent timing domains. Use Value: Sustains 50 MB/s sustained throughput with no wait states, leveraging 20 ns access and byte-enable granularity for partial-word updates. |
Use Scenario: Consolidating analog sensor readings (ADC streams) and discrete status inputs for flight management system preprocessing. IC Role / Device Role / Timing Role: Dual-port SRAM buffers time-critical sensor data while allowing maintenance CPU to read logs without interrupting acquisition timing. Use Value: Guarantees uninterrupted 10 kHz sampling on left port while supporting diagnostic reads on right port - no dropped samples or jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-20AXC | 20 ns access, 4K × 18, but uses 3.3V core (5V-tolerant I/O); lower active power (≈450 mW) | Requires level translation in legacy 5V systems; better suited for mixed-voltage designs with newer controllers | Select if migrating to 3.3V infrastructure or prioritizing power efficiency over drop-in 5V compatibility |
| IS61LV51218-20TQLI | 20 ns access, 32K × 18 organization; 3.3V only; no built-in semaphore or BUSY logic | Larger memory depth but lacks hardware arbitration - requires external logic or software protocols for coherency | Select when >4K depth is needed and arbitration can be handled in firmware or FPGA logic |
Compared with CY7C028V-20AXC and IS61LV51218-20TQLI, the IDT7034S20PF uniquely delivers 5V-native operation with integrated semaphore and BUSY arbitration-reducing BOM count and eliminating timing-critical software coordination in tightly coupled dual-processor systems.
Availability
IDT7034S20PF is available at Aetrix Electronics and suitable for industrial PLC memory buffers, dual-CPU communication bridges, telecom line card buffers, and avionics data acquisition hubs requiring stable component supply and long-term lifecycle support.
Supply support for IDT7034S20PF 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019.
The IDT7034S20PF belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in industrial automation, telecommunications, and aerospace systems requiring hardware-coherent shared memory.
FAQ
What is the maximum operating temperature range for the IDT7034S20PF?
The IDT7034S20PF is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all DC and AC electrical parameters in the datasheet, including 20 ns access time, standby current (ISB1 ≤60 mA), and BUSY arbitration timing (tBAA ≤20 ns), ensuring reliable performance in harsh embedded environments.
Does the IDT7034S20PF support battery backup data retention?
No, the IDT7034S20PF does not support battery backup data retention. That feature is exclusive to the L-version (e.g., IDT7034L20PF), which specifies 2V data retention and 500 µW standby current. The IDT7034S20PF is the S-version, with 5 mW typical standby power and no guaranteed retention below 4.5V.
How does the M/S pin affect BUSY functionality in the IDT7034S20PF?
When M/S = VIH, the IDT7034S20PF operates as a master: BUSYL and BUSYR are push-pull outputs that assert during address contention to stall conflicting writes. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs used to receive write-inhibit signals from a master device in cascaded configurations.
Can the IDT7034S20PF perform simultaneous reads from both ports to the same memory address?
Yes, the IDT7034S20PF supports true simultaneous reads from both ports to the same memory address without arbitration delay or data corruption. This is enabled by its dual-port memory cell architecture and is explicitly confirmed in the datasheet's "Features" section and Functional Block Diagram.
What are the valid interrupt address locations for the IDT7034S20PF?
The IDT7034S20PF uses fixed interrupt mailbox addresses: writing to address FFEh (hex) on the right port asserts INTL; writing to FFFh (hex) on the left port asserts INTR. These locations are reserved for interrupt signaling and remain functional regardless of M/S configuration or BUSY mode.
7034S20PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 72Kbit
- Memory Organization:
- 4K x 18
- 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:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7034S20PF FAQ
1.How can I place an order for 7034S20PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7034S20PF 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 7034S20PF reliable?
The price and inventory of 7034S20PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7034S20PF is usually 5 days.
3.What payment methods are accepted for 7034S20PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7034S20PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7034S20PF?
7034S20PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7034S20PF 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 7034S20PF?
For technical support, including 7034S20PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7034S20PF requirements.
6.How does Aetrix verify that 7034S20PF is sourced from the original manufacturer or authorized distributors?
All 7034S20PF 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 7034S20PF meets industry standards.
7.What is the process for return or replacement of 7034S20PF?
All 7034S20PF units undergo pre-shipment inspection (PSI). If there is an issue with 7034S20PF, 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 7034S20PF part is unused and in its original packaging.
Return procedure for 7034S20PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7034S20PF Tags
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