My Inquiry
My Account
Renesas 70T3599S166DR
- Part No.:
- 70T3599S166DR
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 208-BFQFP
- Datasheet:
-
70T3599S166DR.pdf
- Description:
- IC SRAM 4.5MBIT PAR 208PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,655
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
70T3599S166DR from Integrated Device Technology is a high-speed 256K × 36-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location on independent left and right ports. It operates at 166MHz (3.6ns access), supports selectable 2.5V or 3.3V I/O interfaces per port, and features pipelined/flow-through output modes, JTAG IEEE 1149.1 compliance, and industrial temperature range (–40°C to +85°C). It is used in real-time packet buffering for telecom line cards.
For engineers reviewing the 70T3599S166DR datasheet, 70T3599S166DR pinout, 70T3599S166DR application, or 70T3599S166DR equivalent, key selection criteria include dual-port timing coordination, VDDQ voltage configuration per port, sleep mode (ZZ) behavior, and 208-pin PQFP package compatibility with legacy board layouts.
Technical Context
This device implements fully synchronous operation on both ports with register-controlled address, data, and control inputs-enabling minimal setup/hold times (1.5ns setup, 0.5ns hold @200MHz) and 5ns cycle time capability. Its dual-chip-enable architecture allows seamless depth expansion without external logic, while counter enable (CNTEN) and repeat (REPEAT) signals support burst-mode address generation.
The memory integrates interrupt and collision detection logic, with dedicated INTL/INTR and COLL/COLR flags signaling concurrent access conflicts. Power management includes three standby modes (ISB1–ISB4) and a low-current sleep mode (Izz ≤ 15mA) activated via ZZL/ZZR pins, independent of JTAG functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 36 bits (9Mbit total); supports 256K-depth addressing with A0–A17 (A17 is NC for 70T3599) |
| Max Clock Frequency | 166MHz (industrial grade); enables 14Gbps aggregate bandwidth with full-duplex port operation |
| Access Time | 3.6ns (max) in pipelined mode; ensures sub-4ns clock-to-data valid timing critical for deterministic latency systems |
| I/O Voltage Support | Selectable 2.5V or 3.3V per port via OPTL/OPTR pins; VDDQ must match selected level (2.4–2.6V or 3.15–3.45V) |
| Operating Temperature | –40°C to +85°C; validated for industrial applications including base station control planes and industrial PLCs |
| Package | 208-pin plastic quad flat pack (PQFP), 28mm × 28mm × 3.5mm body; compatible with standard reflow profiles |
| Power Supply | 2.5V ±100mV core (VDD); separate VDDQ rails per port; dynamic current ≤450mA @166MHz (industrial) |
Pinout & Package
208-pin PQFP (DR208 package), 28mm × 28mm × 3.5mm body with 0.5mm lead pitch. All VDD pins require 2.5V; VDDQ pins must be supplied at 2.5V or 3.3V depending on OPT pin state per port; all VSS pins connect to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKL / CLKR | Port-synchronous clock input | Drives internal registers on rising edge; determines timing reference for all port operations |
| A0L–A16L / A0R–A16R | Address inputs | 17-bit address bus per port; A17 is no-connect for 70T3599 (not used in 256K addressing) |
| I/O0L–I/O35L / I/O0R–I/O35R | Bidirectional data bus | 36-bit parallel interface per port; byte-enable (BE0–BE3) controls 9-bit segments independently |
| CE0L/CE1L / CE0R/CE1R | Dual chip enables | Enable/disable port access; dual CE allows depth expansion without glue logic |
| R/WL / R/WR | Read/write direction control | Asynchronous control signal; defines data flow direction per port on each cycle |
| OEL / OER | Output enable | Asynchronous tri-state control; overrides output drivers regardless of clock or CE state |
| PL/FTL / PL/FTR | Pipeline/flow-through mode select | DC-level input selecting output latency mode: pipelined (1-cycle delay) or flow-through (no delay) |
| ZZL / ZZR | Sleep mode enable | Asserted high disables dynamic inputs (except JTAG); reduces current to ≤15mA; static inputs remain functional |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port memory cells | Enables concurrent read/write to identical addresses across ports-critical for handshake-free inter-processor communication |
| Dual-cycle deselect (DCD) | Prevents metastability during rapid chip disable by requiring two clock cycles to deassert CE, ensuring clean bus release |
| Configurable I/O voltage per port | OPTL/OPTR pins independently set 2.5V or 3.3V interface levels-allows mixed-voltage system integration without level shifters |
| Integrated collision detection | COLL/COLR outputs assert within 4.2ns when simultaneous writes target same address-enables hardware arbitration without software overhead |
| JTAG boundary scan (IEEE 1149.1) | Supported in BGA packages (BC256/BFG208); not available in DR208 PQFP due to pin count limitation |
Applications
| Telecom Packet Buffering | Industrial PLC Data Exchange |
|---|---|
Use Scenario: Storing and forwarding variable-length Ethernet frames between ingress and egress MAC layers in carrier-grade switches. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared buffer; left port accepts incoming packets while right port services transmit engine. Use Value: 3.6ns access and pipelined mode ensure deterministic <4ns read latency, meeting strict jitter budgets for 10G line-rate processing. |
Use Scenario: Real-time synchronization of sensor data and actuator commands between redundant CPU modules in safety-critical PLC backplanes. IC Role / Device Role / Timing Role: Memory serves as mirrored shared workspace; each CPU accesses its dedicated port for lock-free data exchange. Use Value: Collision detection flags (COLL/COLR) provide hardware-level conflict resolution in <4.2ns, eliminating polling delays in failover sequences. |
| Medical Imaging Frame Store | Avionics Display Controller |
Use Scenario: Temporary storage of uncompressed CT/MRI scan lines during real-time reconstruction pipelines. IC Role / Device Role / Timing Role: Left port ingests pixel data from ADC interface; right port feeds GPU texture engine at synchronized clock rates. Use Value: 166MHz operation and 14Gbps bandwidth sustain 12-bit 4K@60fps throughput without frame dropping or FIFO overflow. |
Use Scenario: Buffering graphics primitives between flight management computer and multifunction display processor in certified avionics systems. IC Role / Device Role / Timing Role: SRAM provides deterministic-access scratchpad; left port handles command queue, right port manages pixel refresh buffers. Use Value: Industrial temperature rating (–40°C to +85°C) and sleep mode (ZZ) support cold-soak startup and power-gating during standby phases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT70T3599S166BG | 256-pin BGA package (BC256); supports JTAG; same electrical specs and timing | Requires PCB redesign for BGA layout; preferred for new designs needing boundary scan testability | Choose when JTAG debug visibility and higher pin-count routing flexibility are required over legacy PQFP compatibility |
| Cypress CY7C1362AV25-166AXC | 166MHz 256K×36 sync DPRAM; 3.3V-only I/O; no per-port voltage selection or sleep mode (ZZ) | Lacks independent VDDQ control and low-power sleep-unsuitable for mixed-voltage or battery-backed systems | Consider only if system uses uniform 3.3V I/O and does not require power-gated idle states |
Compared with IDT70T3599S166BG, the 70T3599S166DR offers drop-in replacement in existing PQFP footprints but omits JTAG; versus CY7C1362AV25-166AXC, it delivers per-port voltage flexibility and hardware sleep control essential for heterogeneous power domains.
Availability
70T3599S166DR is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, medical imaging, and avionics applications requiring stable component supply across extended product lifecycles.
Supply support for 70T3599S166DR 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), now part of Renesas Electronics, specializes in high-performance timing, memory interface, and RF solutions for communications and computing markets.
The 70T35xx family was designed specifically for deterministic, low-latency dual-port memory applications in real-time systems where simultaneous access, precise timing control, and industrial reliability are mandatory.
FAQ
What is the maximum operating frequency of the 70T3599S166DR?
The 70T3599S166DR is rated for 166MHz operation across the industrial temperature range (–40°C to +85°C). This corresponds to a minimum clock cycle time of 6ns in pipelined mode and guarantees 3.6ns maximum access time. It is not qualified for 200MHz operation-only the S200 variants (e.g., 70T3599S200DR) support that speed grade.
Does the 70T3599S166DR support JTAG boundary scan?
No, the 70T3599S166DR in the 208-pin PQFP (DR208) package does not support JTAG boundary scan. The datasheet explicitly states "Due to limited pin count, JTAG is not supported in the DR208 package." JTAG is available only in BGA variants like 70T3599S166BG (BC256).
How do the OPTL and OPTR pins configure I/O voltage levels on the 70T3599S166DR?
On the 70T3599S166DR, OPTL sets the left port's I/O voltage: VIH = 2.5V selects 3.3V operation (requiring VDDQL = 3.3V), while VIL = 0V selects 2.5V operation (requiring VDDQL = 2.5V). OPTR performs the identical function for the right port. Both ports can operate at different voltages simultaneously.
What happens to the 70T3599S166DR when the ZZL or ZZR pin is asserted?
When ZZL or ZZR is driven high on the 70T3599S166DR, the corresponding port enters sleep mode: all dynamic inputs (except JTAG pins) are disabled, reducing current draw to ≤15mA. Static inputs (PL/FT, OPT, ZZ itself) remain active. The port retains memory contents but halts clock-driven operations until ZZ is deasserted.
Is A17 a functional address pin on the 70T3599S166DR?
No, A17 is a no-connect (NC) pin on the 70T3599S166DR. The device implements 256K × 36 organization, which requires only 17 address bits (A0–A16) for 131,072 words; A17 is unused and must be left unconnected. This is explicitly noted in the datasheet footnote on page 3: "Address A17 is a NC for the IDT70T3599."
70T3599S166DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 208-BFQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Synchronous
- Memory Size:
- 4.5Mbit
- Memory Organization:
- 128K x 36
- Memory Interface:
- Parallel
- Clock Frequency:
- 166 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 3.6 ns
- Voltage - Supply:
- 2.4V ~ 2.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 208-PQFP (28x28)
70T3599S166DR FAQ
1.How can I place an order for 70T3599S166DR through Aetrix?
Please submit a Request for Quotation (RFQ) for 70T3599S166DR 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 70T3599S166DR reliable?
The price and inventory of 70T3599S166DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70T3599S166DR is usually 5 days.
3.What payment methods are accepted for 70T3599S166DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70T3599S166DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70T3599S166DR?
70T3599S166DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70T3599S166DR 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 70T3599S166DR?
For technical support, including 70T3599S166DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70T3599S166DR requirements.
6.How does Aetrix verify that 70T3599S166DR is sourced from the original manufacturer or authorized distributors?
All 70T3599S166DR 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 70T3599S166DR meets industry standards.
7.What is the process for return or replacement of 70T3599S166DR?
All 70T3599S166DR units undergo pre-shipment inspection (PSI). If there is an issue with 70T3599S166DR, 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 70T3599S166DR part is unused and in its original packaging.
Return procedure for 70T3599S166DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70T3599S166DR 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…
