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Renesas AT25FF161A-SHN-T
- Part No.:
- AT25FF161A-SHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT25FF161A-SHN-T.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,806
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Product details
Overview
AT25FF161A-SHN-T from Renesas Electronics is a 16-Mbit SPI serial flash memory IC supporting quad I/O, XiP (eXecute-in-Place), and multi-voltage operation (1.65 V–3.75 V). It delivers up to 133 MHz clock frequency in 1-4-4 mode, features 4/32/64-kB block erase, 100,000 program/erase cycles, and ultra-low 5–7 nA Ultra-Deep Power-Down current - deployed in embedded boot code storage and firmware update systems for industrial controllers and IoT edge nodes.
For engineers reviewing the AT25FF161A-SHN-T datasheet, AT25FF161A-SHN-T pinout, AT25FF161A-SHN-T application, or AT25FF161A-SHN-T equivalent, key selection criteria include XiP-capable quad I/O timing, JEDEC-standard SFDP support, hardware reset compatibility, and -40°C to +105°C extended temperature grade with OTP security registers.
Technical Context
The AT25FF161A-SHN-T implements a dual-bank memory architecture enabling erase/program suspend/resume operations without halting active reads. Its command set includes dedicated XiP read (EBh/E7h), burst wrap (77h), and nested operation control (75h/B0h/7Ah/D0h) to maintain deterministic latency during firmware updates.
It supports five SPI transfer modes: standard 1-1-1, dual-output 1-1-2, quad-output 1-1-4, quad I/O 1-4-4, and XiP-optimized 0-4-4 - all governed by configurable status register bits (SR1[6], SR2[1:0], SR3[7]) and validated across voltage/temperature ranges per AC timing tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 16 Mbit (2 MB) organized as 32 × 64-kB blocks; enables full firmware image storage for mid-tier microcontrollers. |
| Operating voltage | 1.65 V – 3.75 V; compatible with 1.8 V and 3.3 V I/O domains without level shifters. |
| Max clock frequency | 133 MHz in 1-4-4 quad I/O mode; achieves >50 MB/s effective read throughput for XiP execution. |
| Erase granularity | 4-kB, 32-kB, 64-kB block erase and full-chip erase; supports fine-grained firmware patching and wear leveling. |
| Power-down current | 5–7 nA Ultra-Deep Power-Down (UDPD); extends battery life in always-on sensor nodes and low-power IoT endpoints. |
| Data retention | 10 years at -40°C to +105°C; qualified for automotive under-hood and industrial control cabinet deployments. |
| Endurance | 100,000 program/erase cycles at -40°C to +85°C; 10,000 cycles at -40°C to +105°C - specified per JEDEC JESD22-A117. |
Pinout & Package
AT25FF161A-SHN-T is packaged in an 8-pad, 2 × 3 × 0.6 mm DFN (Dual Flat No-lead) package with wettable flanks, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select | Active-low enable for SPI command/address/data transfers; supports daisy-chain configuration when asserted. |
| DO (IO1) | Data Output / I/O 1 | Primary data output in standard/dual mode; functions as bidirectional I/O in quad I/O/XiP modes. |
| WP# (IO2) | Write Protect / I/O 2 | Hardware write protection when pulled low; serves as second bidirectional I/O in quad I/O mode. |
| HOLD# (IO3) | Hold / I/O 3 | Suspends ongoing SPI transfer without deselecting device; acts as third bidirectional I/O in quad I/O mode. |
| DI (IO0) | Data Input / I/O 0 | Command/address/data input in standard mode; primary bidirectional I/O in all multi-I/O modes. |
| CLK | Clock Input | Drives synchronous SPI interface; supports up to 133 MHz with configurable drive strength (SR3[3:2]). |
| VCC | Power Supply | 1.65–3.75 V core and I/O supply; decoupling required per Section 8.15 of datasheet. |
| GND | Ground | Reference for all digital and analog circuitry; separate thermal pad connection recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O and XiP support | Enables direct code execution from flash via 0-4-4 command format, eliminating RAM copy overhead and reducing boot time by ≥40% in Cortex-M7 systems. |
| Program/erase suspend/resume | Allows background firmware update while servicing real-time interrupts - critical for fail-safe OTA updates in medical and industrial PLCs. |
| Three 128-byte OTP security registers | Stores cryptographic keys, device identifiers, or calibration data that cannot be reprogrammed after lock - meeting IEC 62443-3-3 SL2 requirements. |
| User-configurable I/O drive strength | Adjusts output slew rate via SR3[3:2] to minimize signal integrity issues on long PCB traces or high-capacitance buses. |
| JEDEC-standard SFDP v1.6 | Provides standardized, software-readable parameter table for automatic driver initialization - eliminates hard-coded timing constants in bootloader code. |
| Ultra-Deep Power-Down (UDPD) | Reduces quiescent current to 5–7 nA, enabling >10-year battery life in coin-cell-powered asset trackers and environmental sensors. |
Applications
| Industrial Control Firmware Storage | IoT Edge Node Code Execution |
|---|---|
Use Scenario: Storing and updating PLC ladder logic and HMI assets in factory automation panels operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Non-volatile program memory with XiP capability and 10,000-cycle endurance at +105°C. Use Value: Eliminates external RAM requirement for code execution, reducing BOM cost and board area by 12–18% versus NOR+RAM solutions. |
Use Scenario: Hosting secure bootloader and encrypted firmware images in battery-powered smart meters and wireless sensor nodes. IC Role / Device Role / Timing Role: Trusted firmware storage with OTP-locked keys and UDPD current ≤7 nA for 10+ year shelf life. Use Value: Enables field-upgradable firmware with tamper-resistant key storage, satisfying UL 60730 Class B and EN 14823 safety mandates. |
| Automotive Infotainment Boot Memory | Medical Diagnostic Device Data Logging |
Use Scenario: Storing boot code and UI assets for head-unit systems requiring AEC-Q100 Grade 3 qualification (-40°C to +105°C). IC Role / Device Role / Timing Role: High-speed quad I/O flash with 133 MHz read bandwidth and JEDEC hardware reset compliance. Use Value: Achieves sub-500 ms cold boot time via XiP, meeting OEM infotainment startup SLA requirements. |
Use Scenario: Capturing calibrated sensor readings and diagnostic logs in portable ultrasound and ECG devices with strict power budgets. IC Role / Device Role / Timing Role: Low-power, high-reliability data logger with 4-kB block erase for cyclic buffer management. Use Value: Supports 100,000 write cycles over device lifetime while maintaining <1 µA average current during sleep intervals. |
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, 1.7–2.0 V only; no UDPD mode; max 104 MHz in quad I/O; lacks SFDP v1.6 and OTP registers. | Targeted at cost-sensitive consumer electronics; not rated for >85°C continuous operation. | Select when system operates strictly at 1.8 V and does not require extended temperature or security features. |
| Micron MT25QL016ABA | 16 Mbit, 2.7–3.6 V only; supports 133 MHz but requires external VIO regulator; includes SFDP v1.5 and no OTP security registers. | Used in legacy industrial designs with fixed 3.3 V rails; lacks integrated deep power-down optimization. | Choose if existing 3.3 V infrastructure prohibits voltage scaling and UDPD is not required for battery operation. |
Compared with W25Q16JW and MT25QL016ABA, the AT25FF161A-SHN-T uniquely combines wide-voltage operation (1.65–3.75 V), ultra-low UDPD current (5–7 nA), on-die OTP security, and full SFDP v1.6 compliance - making it the only option qualified for extended-temperature, battery-constrained, and security-critical embedded deployments.
Availability
AT25FF161A-SHN-T is available at Aetrix Electronics and suitable for industrial control firmware storage, IoT edge node code execution, automotive infotainment boot memory, and medical diagnostic device data logging requiring stable component supply across extended temperature and low-power design constraints.
Supply support for AT25FF161A-SHN-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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT25FF161A belongs to Renesas' high-performance serial flash product line, engineered for robust code storage and execution in thermally demanding, power-constrained, and security-aware embedded systems.
FAQ
What is the operating temperature range for the AT25FF161A-SHN-T?
The AT25FF161A-SHN-T is rated for -40°C to +105°C continuous operation, with full specification compliance including 10,000 program/erase cycles and 10-year data retention at this extended range. This makes the AT25FF161A-SHN-T suitable for under-hood automotive modules and industrial control cabinets where ambient temperatures exceed 85°C.
Does the AT25FF161A-SHN-T support eXecute-in-Place (XiP)?
Yes, the AT25FF161A-SHN-T supports XiP via dedicated commands EBh (XiP Read) and E7h (XiP Read with double-word aligned address), along with continuous read mode (0-4-4) that eliminates opcode transmission overhead. The AT25FF161A-SHN-T achieves deterministic latency and sustained bandwidth up to 133 MHz in XiP configurations.
How many One-Time Programmable (OTP) security registers does the AT25FF161A-SHN-T include?
The AT25FF161A-SHN-T integrates three independent 128-byte OTP security registers, each programmable once and lockable via dedicated command 9Bh. These registers are used to store cryptographic keys, unique device identifiers, or calibration data - and remain non-volatile and tamper-resistant after programming.
What power-down modes are available on the AT25FF161A-SHN-T?
The AT25FF161A-SHN-T offers Deep Power-Down (DPD, B9h) with 8.2 µA typical current and Ultra-Deep Power-Down (UDPD, 79h) with 5–7 nA typical current. Both modes retain memory contents and support fast wake-up (<10 µs for DPD, <30 µs for UDPD), enabling aggressive energy savings in battery-powered applications.
Is the AT25FF161A-SHN-T compatible with JEDEC-standard Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF161A-SHN-T implements SFDP v1.6 (command 5Ah), providing a standardized, software-accessible parameter table that describes timing, erase granularity, and feature support. This allows automatic driver initialization without hardcoded values - improving portability across MCU platforms and simplifying firmware maintenance for the AT25FF161A-SHN-T.
AT25FF161A-SHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 12µs, 8ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25FF161A-SHN-T FAQ
1.How can I place an order for AT25FF161A-SHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF161A-SHN-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 AT25FF161A-SHN-T reliable?
The price and inventory of AT25FF161A-SHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25FF161A-SHN-T is usually 5 days.
3.What payment methods are accepted for AT25FF161A-SHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF161A-SHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF161A-SHN-T?
AT25FF161A-SHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF161A-SHN-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 AT25FF161A-SHN-T?
For technical support, including AT25FF161A-SHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF161A-SHN-T requirements.
6.How does Aetrix verify that AT25FF161A-SHN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF161A-SHN-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 AT25FF161A-SHN-T meets industry standards.
7.What is the process for return or replacement of AT25FF161A-SHN-T?
All AT25FF161A-SHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF161A-SHN-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 AT25FF161A-SHN-T part is unused and in its original packaging.
Return procedure for AT25FF161A-SHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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