My Inquiry
My Account
Microchip Technology AT45DB161D-CCU
- Part No.:
- AT45DB161D-CCU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 24-LBGA, CSPBGA
- Datasheet:
-
AT45DB161D-CCU.pdf
- Description:
- IC FLASH 16MBIT SPI 66MHZ 24CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,605
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DB161D-CCU from Microchip Technology (formerly Atmel) is a 16-Mbit serial DataFlash memory IC with SPI-compatible RapidS interface, 512/528-byte page architecture, dual 512/528-byte SRAM buffers, and industrial temperature support. It delivers 66 MHz max read speed for code shadowing in embedded microcontroller systems requiring high-speed sequential access and low-power operation.
For engineers reviewing the AT45DB161D-CCU datasheet, AT45DB161D-CCU pinout, AT45DB161D-CCU application, or AT45DB161D-CCU equivalent, key selection criteria include page size configurability (512 vs. 528 bytes), buffer-assisted concurrent read/write capability, sector-level hardware write protection, and 100,000 program/erase cycles per page.
Technical Context
The AT45DB161D-CCU implements a sequential-access Flash architecture with two independent 512/528-byte SRAM buffers enabling simultaneous data reception and main memory reprogramming. Its RapidS interface supports SPI Modes 0 and 3 at up to 66 MHz, bypassing parallel address/data buses to reduce pin count and layout complexity.
Memory organization comprises 4,096 pages (512 or 528 bytes each), grouped into 16 sectors with hierarchical erase granularity: page (512 B), block (4 KB), sector (128 KB), and chip (16 Mbit). All program and erase operations are internally self-timed and require no external high-voltage programming supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (17,301,504 bits) organized as 4,096 pages |
| Page Size | User-configurable 512-byte or 528-byte pages; factory pre-settable to 512-byte mode |
| Interface Speed | Up to 66 MHz SCK for Continuous Array Read (0BH/E8H opcodes) |
| Power Supply | Single 2.5–3.6 V or 2.7–3.6 V supply; no high-voltage programming required |
| Current Consumption | 7 mA typical active read current; 25 µA typical standby; 15 µA deep power-down |
| Endurance & Retention | ≥100,000 program/erase cycles per page; 20-year data retention |
| Operating Temp | Industrial range: –40°C to +85°C |
Pinout & Package
The AT45DB161D-CCU is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) with standard lead pitch and RoHS-compliant green finish. Pin functions are defined for SPI-compatible serial communication, hardware reset, write protection, and ready/busy status indication.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; falling edge initiates command sequence; device enters standby on deassertion |
| SCK | Serial Clock | Input clock controlling data transfer timing; SI latched on rising edge, SO driven on falling edge |
| SI | Serial Input | Command, address, and data input line; MSB-first protocol; requires CS low during loading |
| SO | Serial Output | Data output line for read operations; tri-stated when CS is high |
| WP | Write Protect | Hardware lock for sector protection; overrides software protection when asserted low |
| RESET | Reset | Active-low asynchronous reset of internal state machine; recommended to tie high if unused |
| RDY/BUSY | Ready/Busy Indicator | Open-drain output pulled high externally; driven low during self-timed program/erase/page-to-buffer transfers |
| VCC / GND | Power Supply | Single 2.5–3.6 V supply and ground reference; no separate I/O voltage required |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 512/528-byte buffers enable concurrent data streaming into one buffer while reprogramming the Flash array from the other |
| Flexible Erase Granularity | Four-tier erase hierarchy (page/block/sector/chip) allows precise wear leveling and firmware update optimization without full-chip erasure |
| Continuous Array Read | Legacy (E8H) and high-speed (0BH) modes support uninterrupted sequential reads across page boundaries at up to 66 MHz |
| Hardware Sector Protection | WP pin provides physical lockout of protected sectors independent of software commands, enhancing secure boot and configuration integrity |
| Security Register | 128-byte dedicated register with 64-byte user-programmable space and unique 64-byte device identifier for secure provisioning |
Applications
| Code Shadowing in MCU Bootloader | Firmware Update Storage |
|---|---|
Use Scenario: Microcontroller loads executable code from external Flash into internal RAM at startup for faster execution. IC Role / Device Role / Timing Role: High-speed sequential read-only storage with continuous array access and zero-latency page boundary crossing. Use Value: Enables 66 MHz read throughput and eliminates wait states during boot, reducing startup time by >40% compared to parallel NOR Flash alternatives. | Use Scenario: Field-upgradable embedded system stores new firmware images prior to validation and atomic swap. IC Role / Device Role / Timing Role: Dual-buffered nonvolatile storage supporting background download while maintaining active firmware in Flash. Use Value: Allows seamless over-the-air updates with no service interruption-new image written to buffer while running code executes from main memory. |
| Secure Configuration Storage | Digital Voice/Image Buffering |
Use Scenario: Industrial controller stores calibrated sensor parameters, encryption keys, and device-specific credentials. IC Role / Device Role / Timing Role: Sector-lockdown enabled storage with hardware write protection and unique device ID for tamper-resistant identity binding. Use Value: Prevents unauthorized modification of critical settings via WP pin assertion and ensures cryptographic key uniqueness across production units. | Use Scenario: Portable audio recorder captures stereo voice samples or compressed image frames before batch transfer to host. IC Role / Device Role / Timing Role: Low-power sequential buffer with 25 µA standby current and rapid page program for burst capture. Use Value: Extends battery life in always-on recording applications while sustaining >2 MB/s effective write throughput using buffer-to-page programming. |
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 W25Q16JVSSIQ | 16 Mbit Quad SPI NOR Flash; 4-line I/O; 133 MHz clock; no SRAM buffers; uniform 4 KB sectors | Lacks dual-buffer concurrency and continuous array read; better suited for XIP and random-access code execution | Select when random-address read performance or execute-in-place capability is prioritized over streaming throughput |
| Macronix MX25L1606EM2I-12G | 16 Mbit standard SPI NOR Flash; 85 MHz max clock; no configurable page size or SRAM buffers; 4 KB erase blocks | No page/buffer flexibility; higher active current (15 mA); lacks RDY/BUSY open-drain output | Choose for cost-sensitive designs where buffer-assisted streaming and ultra-low standby current are not required |
Compared with W25Q16JVSSIQ and MX25L1606EM2I-12G, the AT45DB161D-CCU uniquely supports true concurrent read/write via dual buffers, 66 MHz continuous sequential reads, and hardware-sector lockdown-making it optimal for streaming, secure boot, and low-power buffering applications where NOR Flash alternatives trade off speed, concurrency, or security features.
Availability
AT45DB161D-CCU is available at Aetrix Electronics and suitable for code shadowing, firmware update storage, secure configuration management, and digital voice/image buffering requiring stable component supply and long-term industrial-grade reliability.
Supply support for AT45DB161D-CCU 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
Microchip Technology acquired Atmel in 2016 and maintains the DataFlash product line as part of its broad serial memory portfolio. The company specializes in microcontrollers, analog, FPGA, and memory solutions for industrial, automotive, and consumer markets.
The AT45DB161D-CCU belongs to the Atmel DataFlash family, designed specifically for high-speed sequential data access in resource-constrained embedded systems where low pin count, low voltage, and concurrent buffer operation are critical.
FAQ
What is the maximum clock frequency supported by the AT45DB161D-CCU for continuous read operations?
The AT45DB161D-CCU supports up to 66 MHz for Continuous Array Read using opcodes 0BH (high-frequency mode) and E8H (legacy mode), as specified by the fCAR1 parameter. This enables sustained sequential throughput ideal for code shadowing and streaming applications without page-boundary delays.
Does the AT45DB161D-CCU require a high-voltage programming supply?
No, the AT45DB161D-CCU operates from a single 2.5–3.6 V or 2.7–3.6 V supply for all operations-including program and erase-eliminating the need for charge pumps or external high-voltage generators. This simplifies power design and improves system reliability in battery-powered and low-voltage embedded applications.
How does the dual-buffer architecture of the AT45DB161D-CCU improve system performance?
The AT45DB161D-CCU's two independent 512/528-byte SRAM buffers allow simultaneous data reception into one buffer while reprogramming the Flash array from the other. This enables uninterrupted data streaming and eliminates idle time during page programming, significantly accelerating firmware updates and real-time buffering tasks.
Can the AT45DB161D-CCU be used for secure boot applications?
Yes, the AT45DB161D-CCU supports secure boot through hardware sector lockdown, individual sector write protection via the WP pin, and a 128-byte security register containing a unique 64-byte device identifier and 64-byte user-programmable space-enabling cryptographic key binding and tamper-resistant firmware authentication.
What erase options are available on the AT45DB161D-CCU and how do they impact firmware update design?
The AT45DB161D-CCU offers four erase granularities: page (512 B), block (4 KB), sector (128 KB), and chip (16 Mbit). This enables optimized firmware update strategies-such as erasing only modified sectors instead of full-chip-reducing update time, extending endurance, and minimizing risk of corruption during power loss.
AT45DB161D-CCU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-LBGA, CSPBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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
- Clock Frequency:
- 66 MHz
- Write Cycle Time - Word, Page:
- 6ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-CBGA (6x8)
AT45DB161D-CCU FAQ
1.How can I place an order for AT45DB161D-CCU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB161D-CCU 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 AT45DB161D-CCU reliable?
The price and inventory of AT45DB161D-CCU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB161D-CCU is usually 5 days.
3.What payment methods are accepted for AT45DB161D-CCU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB161D-CCU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB161D-CCU?
AT45DB161D-CCU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB161D-CCU 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 AT45DB161D-CCU?
For technical support, including AT45DB161D-CCU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB161D-CCU requirements.
6.How does Aetrix verify that AT45DB161D-CCU is sourced from the original manufacturer or authorized distributors?
All AT45DB161D-CCU 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 AT45DB161D-CCU meets industry standards.
7.What is the process for return or replacement of AT45DB161D-CCU?
All AT45DB161D-CCU units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB161D-CCU, 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 AT45DB161D-CCU part is unused and in its original packaging.
Return procedure for AT45DB161D-CCU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DB161D-CCU 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…
