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Analog Devices Inc./Maxim Integrated DS5000FP-16+
- Part No.:
- DS5000FP-16+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
DS5000FP-16+.pdf
- Description:
- IC MCU 8BIT EXTRNL NVSRAM 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,117
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Product details
Overview
DS5000FP-16+ from Maxim Integrated is an 8051-compatible nonvolatile SRAM-based microcontroller featuring 16MHz maximum clock speed, 8–64kB in-system programmable memory space, crash-proof power-fail reset and early-warning interrupt, and integrated watchdog timer. It operates across 0°C to +70°C and uses a user-supplied lithium cell to retain program/data for >10 years during power loss - ideal for data-logging, portable instrumentation, and secure embedded control systems.
For engineers reviewing the DS5000FP-16+ datasheet, DS5000FP-16+ pinout, DS5000FP-16+ application, or DS5000FP-16+ equivalent, key selection considerations include its byte-wide nonmultiplexed address/data bus (BA14–BA0 / BD7–BD0), lithium-backed CE1/CE2 chip enables, R/W-controlled write protection, and dual-mode memory partitioning supporting both code and data segments in NV SRAM.
Technical Context
The DS5000FP-16+ implements an 8051 instruction-set-compatible CPU core with full support for two 16-bit timers/counters, on-chip UART (P3.0/RXD, P3.1/TXD), four 8-bit I/O ports (P0–P3), and 128 bytes of scratchpad RAM. Its architecture replaces ROM with battery-backed NV SRAM, enabling self-modifying code and field-upgradable firmware without external programming hardware.
It features a dedicated byte-wide memory interface - separate 15-bit address bus (BA14–BA0) and 8-bit bidirectional data bus (BD7–BD0) - decoupled from the multiplexed expanded bus (P0/P2). Memory access is controlled via CE1 (primary NV SRAM enable), CE2 (secondary 32kB data bank), and active-low R/W, with BA14 and CE1/CE2 lithium-backed for data retention during VCC dropout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Clock Speed | 16 MHz - determines real-time instruction throughput and peripheral timing resolution. |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade industrial and portable equipment environments. |
| Nonvolatile Memory Support | 8–64 kB NV SRAM - configurable via software partitioning into code and data segments, eliminating need for external EPROM/Flash. |
| Power-Fail Thresholds | VPFW = 4.15–4.75 V, VCCMIN = 4.05–4.65 V - triggers early-warning interrupt and hard reset before data corruption occurs. |
| Lithium Backup Voltage | VLI = 2.9–3.3 V - powers CE1, CE2, BA14, and VCCO during main supply failure, preserving memory state >10 years. |
| I/O Port Count | 32 parallel GPIO pins (P0–P3) - fully available for application use due to nonmultiplexed memory bus. |
| Serial Interface | On-chip UART (Mode 0) - supports synchronous serial communication at 12×CLK cycle rate for bootloader or sensor interfacing. |
Pinout & Package
DS5000FP-16+ is housed in an 80-pin QFP (Quad Flat Package) with 0.5 mm pitch, body size 20.0 × 14.0 mm, and 3.0 mm max height per JEDEC MO-137. The package provides full thermal and mechanical compatibility with standard surface-mount assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Multiplexed Address/Data Bus (Expanded Mode) | Open-drain port used as AD0–AD7 in expanded bus mode; requires external pull-ups when used as GPIO. |
| BA0–BA14 | Byte-Wide Address Bus | Dedicated 15-bit nonmultiplexed address lines; BA14 is lithium-backed for retention during power loss. |
| BD0–BD7 | Byte-Wide Data Bus | Bidirectional 8-bit data path to NV SRAM; shares no pins with I/O ports - preserves all 32 GPIOs. |
| CE1 / CE2 | Active-Low Chip Enables | CE1 selects primary NV SRAM (up to 32kB); CE2 enables secondary 32kB data bank or RTC; both lithium-backed. |
| R/W | Read/Write Control | Active-low signal controlling SRAM write strobe; enforces write-protection on ROM-mapped code segments. |
| VLI | Lithium Voltage Input | Accepts 2.9–3.3 V lithium cell; internal circuitry switches VCCO to VLI when main supply drops below VLI. |
| VCCO | Switched Power Output | Supplies VCC-level or lithium-level voltage to external SRAM; isolates battery from load during normal operation. |
| RST | Active-High Reset | Internally pulled down; initiates cold boot or recovery after power-fail reset or watchdog timeout. |
Key Features
| Feature | Design Value |
|---|---|
| In-system programmability | Enables field firmware updates via on-chip serial bootstrap loader - no external programmer required. |
| Crash-proof nonvolatile retention | Preserves program/data for >10 years using user-supplied lithium cell; BA14, CE1, CE2 remain active during VCC dropout. |
| Software security encryption | Executes encrypted code to prevent reverse engineering; security lock prevents unauthorized download - unlock erases memory. |
| Dual-bank NV SRAM addressing | CE1 accesses primary 32kB code/data space; CE2 enables optional second 32kB data-only bank - expands storage without bus contention. |
| Power-fail management | Provides three-tier response: early-warning interrupt (at VPFW), hard reset (at VCCMIN), and lithium switchover (at VLI) - ensures deterministic state recovery. |
Applications
| Data-Logging Systems | Secure Portable Instruments |
|---|---|
|
Use Scenario: Continuous timestamped recording of sensor readings in battery-powered field meters with infrequent host uploads. IC Role / Device Role / Timing Role: Primary controller executing adaptive sampling logic, managing NV SRAM buffers, and synchronizing with Dallas RTC for time-stamping. Use Value: Eliminates need for external nonvolatile memory and backup power circuitry - single-chip solution retains >10 years of logged data on lithium cell. |
Use Scenario: Handheld diagnostic tool requiring tamper-resistant firmware and reliable operation during intermittent power disconnects. IC Role / Device Role / Timing Role: Secure execution engine enforcing encrypted application code, triggering watchdog reset on fault, and preserving calibration data across power cycles. Use Value: Security lock prevents firmware extraction; crash-proof retention ensures calibration integrity remains intact even after unexpected shutdown. |
| Industrial Control Edge Nodes | Legacy System Upgrades |
|
Use Scenario: Retrofitting PLC I/O modules with field-upgradable logic to replace aging 8051-based controllers without board redesign. IC Role / Device Role / Timing Role: Drop-in 8051 object-code compatible MCU handling real-time I/O scanning, PID loop execution, and Modbus RTU communication. Use Value: Full 8051 instruction set and peripheral register mapping allow reuse of existing firmware; byte-wide bus simplifies SRAM interface vs. multiplexed alternatives. |
Use Scenario: Modernizing legacy medical devices where ROM-based microcontrollers require costly requalification for firmware patches. IC Role / Device Role / Timing Role: In-system reprogrammable replacement for mask-ROM 8051 variants, supporting regulatory-compliant over-the-air updates. Use Value: Self-modifying capability allows runtime patching of safety-critical routines; encrypted execution satisfies IEC 62304 software lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS5000T-16+ | Pre-integrated module: DS5000FP-16+ + 32kB SRAM + lithium cell + optional RTC in 40-pin DIP; no external memory design needed. | Targeted at rapid prototyping and low-volume production where board space and BOM count are constrained. | Select DS5000T-16+ when minimizing external components and accelerating time-to-test is prioritized over flexible memory sizing. |
| DS2250T-16+ | SIMM-form-factor module with identical DS5000FP-16+ core plus dual 32kB SRAM banks and RTC; supports hot-plug replacement. | Designed for modular systems requiring field-replaceable compute nodes, such as telecom line cards or test equipment slots. | Choose DS2250T-16+ for plug-in architectures needing standardized form factor, dual-bank NV data, and mechanical serviceability. |
Compared with DS5000FP-16+, the DS5000T-16+ reduces design effort by integrating memory and backup power but sacrifices layout flexibility and fine-grained memory partitioning control; the DS2250T-16+ adds SIMM compatibility and dual-bank support at the cost of higher unit price and fixed mechanical footprint.
Availability
DS5000FP-16+ is available at Aetrix Electronics and suitable for data-logging systems, secure portable instruments, industrial control edge nodes, and legacy system upgrades requiring stable component supply and long-term obsolescence management.
Supply support for DS5000FP-16+ 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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for industrial, automotive, communications, and computing markets.
The DS5000FP-16+ belongs to Maxim's Secure Microcontroller family, engineered specifically for applications demanding in-field firmware updateability, long-term nonvolatile data retention, and hardware-enforced software security - not general-purpose 8051 replacement.
FAQ
What is the primary function of the DS5000FP-16+ in an embedded system?
The DS5000FP-16+ serves as a secure, nonvolatile SRAM-based 8051-compatible microcontroller that executes field-upgradable firmware while retaining program and data through power loss. Its core function is to provide crash-proof operation in portable or unreliable-power environments - the DS5000FP-16+ achieves this via lithium-backed memory control signals (CE1, CE2, BA14), power-fail interrupts, and integrated watchdog timer, making it distinct from standard ROM-based 8051 derivatives.
How does the DS5000FP-16+ handle memory addressing differently than a standard 8051?
Unlike the standard 8051, which multiplexes address and data on Port 0, the DS5000FP-16+ provides a dedicated byte-wide 15-bit address bus (BA14–BA0) and 8-bit data bus (BD7–BD0), freeing all 32 I/O pins for application use. This nonmultiplexed interface eliminates external latch requirements and enables direct connection to standard SRAM chips - the DS5000FP-16+ manages memory partitioning in software, allowing dynamic allocation between code and data segments within the same NV SRAM device.
Can the DS5000FP-16+ operate without an external lithium battery?
No - the DS5000FP-16+ requires an external lithium cell (2.9–3.3 V) connected to the VLI pin to maintain nonvolatile memory retention during power loss. Without VLI, CE1, CE2, and BA14 lose their lithium-backed functionality, and the device cannot guarantee >10-year data retention or crash-proof operation. The DS5000FP-16+ will function as a standard 8051 during active operation with only VCC, but all NV SRAM contents will be lost upon power removal unless backed by VLI.
What are the critical timing parameters for reliable DS5000FP-16+ serial bootloader operation?
For reliable serial bootstrap loader operation, the DS5000FP-16+ requires Mode 0 serial timing with a clock cycle time (tSPCLK) of exactly 12×tCLK - at 16MHz, this yields a 750 ns bit period. Data setup (tDOCH) and hold (tCHDO) relative to the rising clock edge must meet 10tCLK−133 ns and 2tCLK−117 ns respectively. These constraints ensure the DS5000FP-16+ correctly samples incoming program code during in-system loading, and deviations risk checksum failure or incomplete flash programming.
Is the DS5000FP-16+ pin-compatible with other 8051-family microcontrollers?
No - the DS5000FP-16+ is not pin-compatible with standard 8051 variants due to its unique 80-pin QFP package and dedicated byte-wide bus signals (BA0–BA14, BD0–BD7, CE1, CE2, R/W, VLI, VCCO). While it maintains 8051 instruction-set and register-level compatibility, its physical interface is purpose-built for NV SRAM integration. Engineers must design a new PCB layout for the DS5000FP-16+; migration from legacy 8051s requires adapting memory interface logic and power management circuitry.
DS5000FP-16+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 80-BQFP
- Series:
- DS500x
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- EBI/EMI, SIO, UART/USART
- Peripherals:
- Power-Fail Reset, WDT
- Number of I/O:
- 32
- Program Memory Size:
- External
- Program Memory Type:
- NVSRAM
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 5.25V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DS5000FP-16+ FAQ
1.How can I place an order for DS5000FP-16+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS5000FP-16+ 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 DS5000FP-16+ reliable?
The price and inventory of DS5000FP-16+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS5000FP-16+ is usually 5 days.
3.What payment methods are accepted for DS5000FP-16+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS5000FP-16+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS5000FP-16+?
DS5000FP-16+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS5000FP-16+ 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 DS5000FP-16+?
For technical support, including DS5000FP-16+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS5000FP-16+ requirements.
6.How does Aetrix verify that DS5000FP-16+ is sourced from the original manufacturer or authorized distributors?
All DS5000FP-16+ 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 DS5000FP-16+ meets industry standards.
7.What is the process for return or replacement of DS5000FP-16+?
All DS5000FP-16+ units undergo pre-shipment inspection (PSI). If there is an issue with DS5000FP-16+, 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 DS5000FP-16+ part is unused and in its original packaging.
Return procedure for DS5000FP-16+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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