My Inquiry
My Account
Renesas AT45DQ161-SHFHJ-T
- Part No.:
- AT45DQ161-SHFHJ-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DQ161-SHFHJ-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,645
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DQ161-SHFHJ-T from Renesas Electronics is a 16-Mbit serial DataFlash memory with SPI interface, Dual-I/O and Quad-I/O support, 512/528-byte configurable page size, 85 MHz max clock frequency, and 6 ns clock-to-output time. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring high-speed sequential access and concurrent buffer operation.
For engineers reviewing the AT45DQ161-SHFHJ-T datasheet, AT45DQ161-SHFHJ-T pinout, AT45DQ161-SHFHJ-T application, or AT45DQ161-SHFHJ-T equivalent, key selection considerations include SPI mode 0/3 compatibility, RapidS™ acceleration, dual SRAM buffers for interleaved write, ultra-deep power-down (500 nA), and sector lockdown security.
Technical Context
The AT45DQ161-SHFHJ-T implements a two-buffer architecture with independent 512/528-byte SRAM buffers enabling simultaneous data reception and main memory reprogramming. Its command set supports legacy SPI, Dual-I/O (3Bh/BBh opcodes), and Quad-I/O (6Bh/EBh opcodes) read/write operations, plus RapidS™ mode for reduced latency.
Memory organization is fixed at 4,096 pages × 512 or 528 bytes, selectable at order time. Erase granularity includes Page (512/528 B), Block (4 kB), Sector (128 kB), and Chip (16 Mbit), with suspend/resume capability during active program/erase cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (17,301,504 bits), organized as 4,096 pages of 512 or 528 bytes |
| Interface Speed | 85 MHz max for SPI, Dual-I/O, and Quad-I/O modes - enables >30 MB/s effective throughput |
| Access Latency | 6 ns max clock-to-output (tV) - critical for real-time firmware fetch and streaming audio playback |
| Power Consumption | 500 nA typical ultra-deep power-down current - extends battery life in always-on sensor nodes |
| Endurance & Retention | 100,000 program/erase cycles per page; 20-year data retention - suitable for field-upgradable firmware |
| Page Size | User-configurable at order time: 512 bytes (binary-aligned) or 528 bytes (DataFlash standard) |
| Operating Voltage | 2.3 V to 3.6 V single supply - compatible with 2.5 V and 3.3 V logic domains without level shifters |
Pinout & Package
AT45DQ161-SHFHJ-T is supplied in an 8-pad Ultra-thin DFN package (5 mm × 6 mm × 0.6 mm), RoHS-compliant and halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be asserted before SCK edge for valid transaction |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz; phase/polarity configurable for Mode 0/3 |
| MOSI | Master Out Slave In | Serial data input for commands, addresses, and write data; supports single/dual/quad-input buffer writes |
| MISO | Master In Slave Out | Serial data output for reads; supports single/dual/quad-output modes with distinct opcodes (03h/3Bh/6Bh) |
| WP | Write Protect | Hardware-enabled sector protection control; low = enable protection, high = disable (when software protection enabled) |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state and clears status register flags |
| HOLD | Pause Transfer | Active-low input suspends ongoing SPI transfer without losing internal address/state - enables multi-master arbitration |
| VCC / GND | Power / Ground | Single 2.3–3.6 V supply; decoupling capacitor required within 10 mm of pins per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad-I/O Read & Write | Enables 2× or 4× bandwidth vs. standard SPI - reduces firmware update time by up to 75% in high-throughput systems |
| Two Independent SRAM Buffers | Allows full-duplex operation: receive new data into one buffer while programming the other into flash - eliminates write stalls |
| RapidS™ Operation | Reduces instruction overhead and timing constraints for continuous reads - improves deterministic latency in real-time audio/video buffering |
| Program/Erase Suspend & Resume | Permits urgent read access during background erase - essential for responsive HMI and diagnostic logging in automotive ECUs |
| 128-Byte OTP Security Register | 64-byte factory-unique ID + 64-byte user-programmable space - enables secure boot key binding and device identity attestation |
| Sector Lockdown | Hardware-frozen read-only lock for any sector - prevents accidental or malicious overwrite of bootloader or calibration data |
Applications
| Firmware Storage | Audio Playback Buffer |
|---|---|
Use Scenario: Storing and executing boot code and application firmware in resource-constrained MCU-based edge devices. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped via SPI; supports rapid sequential reads for XIP-like execution flow. Use Value: 85 MHz Quad-I/O read speed and 6 ns tV enable sub-10 µs instruction fetch latency - critical for deterministic startup timing. |
Use Scenario: Streaming compressed voice prompts or system alerts from flash to DAC in smart home hubs and medical wearables. IC Role / Device Role / Timing Role: High-bandwidth sequential data source with zero-gap read capability using RapidS™ mode. Use Value: Dual-output (3Bh) and quad-output (6Bh) commands deliver sustained 34 MB/s throughput - eliminates audio dropouts during playback. |
| Data Logging | Secure Configuration Storage |
Use Scenario: Capturing sensor telemetry in industrial IoT gateways with intermittent connectivity and long-term reliability requirements. IC Role / Device Role / Timing Role: Wear-leveling–agnostic sequential log buffer; leverages page/sector erase flexibility for cyclic overwrite. Use Value: 100,000 P/E cycles and 20-year retention ensure 10+ years of daily logging at 100-page writes/day - no field replacement needed. |
Use Scenario: Storing calibrated sensor offsets, cryptographic keys, and regulatory compliance parameters in medical diagnostics equipment. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault using sector lockdown and OTP security register. Use Value: Hardware-frozen lockdown prevents runtime modification; 64-byte unique ID enables per-device key derivation - meets IEC 62304 traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q16JW | 16 Mbit, 1.65–3.6 V, Quad SPI only (no Dual-I/O), no SRAM buffers, no RapidS™, 133 MHz max clock | Lacks concurrent buffer operation and RapidS™ acceleration; better suited for simple code storage than streaming workloads | Select when cost sensitivity outweighs need for interleaved write or ultra-low-latency reads. |
| Macronix MX25L1633F | 16 Mbit, 2.7–3.6 V, supports Dual/Quad SPI, no SRAM buffers, no RapidS™, 104 MHz max clock, no sector lockdown | No hardware sector freeze; relies on software protection only; higher VMIN excludes 2.5 V systems | Choose for legacy 3.3 V designs where OTP security and tamper-proof lockdown are not required. |
Compared with Winbond W25Q16JW and Macronix MX25L1633F, AT45DQ161-SHFHJ-T uniquely delivers concurrent buffer operation, RapidS™ low-latency reads, and hardware-enforced sector lockdown - making it optimal for safety-critical firmware and real-time streaming applications.
Availability
AT45DQ161-SHFHJ-T is available at Aetrix Electronics and suitable for firmware storage, audio playback buffering, and secure configuration storage requiring stable component supply across industrial, medical, and automotive production programs.
Supply support for AT45DQ161-SHFHJ-T 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 is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.
The AT45DQ161-SHFHJ-T belongs to Renesas' DataFlash family, designed specifically for high-reliability, high-throughput serial memory applications demanding concurrent operation, advanced security, and ultra-low-power states.
FAQ
What is the default page size configuration for AT45DQ161-SHFHJ-T?
The AT45DQ161-SHFHJ-T is ordered pre-configured to either 512 bytes or 528 bytes per page - the default shipped configuration is 528 bytes, matching the legacy DataFlash standard. This setting is fixed at manufacturing and cannot be changed in-system; users must select the desired option at order time per Renesas ordering code SHFHJ-T.
Does AT45DQ161-SHFHJ-T support true Quad SPI (QSPI) protocol with 4-line address and data transfer?
AT45DQ161-SHFHJ-T supports Quad-output and Quad-input operations for data transfer (e.g., opcodes 6Bh/EBh), but uses standard SPI 4-wire signaling (CS/SCK/MOSI/MISO) - it does not implement true QSPI with 4-bit-wide address or command phases. Addressing remains single-bit; only data payload is transferred over four lines during Quad-I/O mode.
How does the dual SRAM buffer architecture improve write performance in AT45DQ161-SHFHJ-T?
The AT45DQ161-SHFHJ-T's two independent 512/528-byte SRAM buffers allow one buffer to accept incoming data via SPI while the other simultaneously programs its contents into flash memory. This interleaving eliminates idle time between page writes, enabling continuous data streaming - critical for real-time logging and firmware updates without CPU intervention.
Can AT45DQ161-SHFHJ-T enter ultra-deep power-down mode while retaining sector protection settings?
Yes. AT45DQ161-SHFHJ-T retains all sector protection register states, lockdown status, and configuration register values across ultra-deep power-down (500 nA) and deep power-down (3 µA) modes. No reinitialization or reconfiguration is required upon wake-up; protection remains active immediately after resume.
Is the 64-byte factory-programmed unique identifier in AT45DQ161-SHFHJ-T accessible via standard SPI commands?
Yes. The 64-byte factory-unique identifier is stored in the 128-byte OTP Security Register and is readable using the standard "Read Security Register" command (opcode 77h). Access requires no special unlock sequence and is available in all operational modes except ultra-deep power-down.
AT45DQ161-SHFHJ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 528 Bytes x 4096 pages
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 6ms
- Access Time:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DQ161-SHFHJ-T FAQ
1.How can I place an order for AT45DQ161-SHFHJ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DQ161-SHFHJ-T 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 AT45DQ161-SHFHJ-T reliable?
The price and inventory of AT45DQ161-SHFHJ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DQ161-SHFHJ-T is usually 5 days.
3.What payment methods are accepted for AT45DQ161-SHFHJ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DQ161-SHFHJ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DQ161-SHFHJ-T?
AT45DQ161-SHFHJ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DQ161-SHFHJ-T 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 AT45DQ161-SHFHJ-T?
For technical support, including AT45DQ161-SHFHJ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DQ161-SHFHJ-T requirements.
6.How does Aetrix verify that AT45DQ161-SHFHJ-T is sourced from the original manufacturer or authorized distributors?
All AT45DQ161-SHFHJ-T 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 AT45DQ161-SHFHJ-T meets industry standards.
7.What is the process for return or replacement of AT45DQ161-SHFHJ-T?
All AT45DQ161-SHFHJ-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DQ161-SHFHJ-T, 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 AT45DQ161-SHFHJ-T part is unused and in its original packaging.
Return procedure for AT45DQ161-SHFHJ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DQ161-SHFHJ-T 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…
