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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:4,056
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Product details
Overview
DS5000FP-16 from Maxim Integrated is an 8051-compatible nonvolatile SRAM-based microcontroller with crash-proof operation, in-system programmability via on-chip serial port, and lithium-backed memory retention for over 10 years. It features 128 bytes of scratchpad RAM, two timer/counters, an on-chip UART, and 32 parallel I/O pins. Used in data-logging systems requiring persistent state retention during power loss.
For engineers reviewing the DS5000FP-16 datasheet, DS5000FP-16 pinout, DS5000FP-16 application, or DS5000FP-16 equivalent, key selection criteria include its byte-wide nonmultiplexed address/data bus (BA14–BA0 / BD7–BD0), lithium-backed CE1/CE2 chip enables, VLI-supplied backup power architecture, and 16 MHz maximum clock speed with 0°C to +70°C industrial temperature range.
Technical Context
The DS5000FP-16 implements a full 8051 instruction set with object-code compatibility, supporting standard 8051 development tools. Its memory architecture separates program and data space across 64 kB each, with up to 32 kB mapped via CE1 to external NV SRAM and optional 32 kB data extension via CE2.
Power management includes three-tiered voltage monitoring: early-warning power-fail interrupt at VPFW = 4.6 V (typ), reset assertion at VCCMIN = 4.5 V (typ), and automatic switchover to VLI (3.3 V nominal) when VCC drops below VLI. BA14, CE1, and CE2 are lithium-backed to maintain state during backup mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8051-compatible CPU with full instruction set and register mapping |
| Max Clock Speed | 16 MHz - supports real-time control loops and serial bootloading at industry-standard baud rates |
| Memory Interface | Nonmultiplexed 15-bit byte-wide address bus (BA14–BA0) + 8-bit bidirectional data bus (BD7–BD0) |
| Nonvolatile Retention | ≥10 years with external lithium cell (VLI = 2.9–3.3 V) backing SRAM, CE1, CE2, and BA14 |
| Operating Temperature | 0°C to +70°C - validated for industrial embedded environments without derating |
| Power-Fail Response | Three-stage detection: interrupt at 4.6 V, reset at 4.5 V, VLI switchover at 3.3 V |
| I/O Pins | 32 general-purpose parallel I/O lines across Ports 0–3, plus dedicated R/W, PSEN, ALE, EA |
Pinout & Package
DS5000FP-16 is housed in an 80-pin QFP (Quad Flat Package) with 0.5 mm pitch, 24.0 mm × 20.0 mm body size, and exposed thermal pad per package drawing 56-G4005-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Multiplexed Address/Data Bus (AD0–AD7) | Open-drain port requiring external pullups; functions as lower 8 bits of expanded address/data bus in external memory mode |
| BA0–BA14 | Byte-Wide Address Bus | 15-bit nonmultiplexed address lines; BA14 is lithium-backed for state retention during power loss |
| BD0–BD7 | Byte-Wide Data Bus | Bidirectional 8-bit data path directly connected to SRAM; supports MOVX instructions for external memory access |
| R/W | Read/Write Control | Active-low signal controlling write enable to SRAM; automatically asserted during program/data writes to protected NV RAM |
| CE1 / CE2 | Chip Enable Outputs | Lithium-backed active-low enables for primary (CE1) and secondary (CE2) SRAM banks; remain high during VCC brownout |
| VLI | Lithium Voltage Input | Accepts 2.9–3.3 V lithium cell; serves as reference for VPFW/VCCMIN thresholds and backup power source |
| VCCO | Switched Output Supply | Internally switches between VCC and VLI; powers SRAM VCC pin during battery backup with ~0.65 V diode drop |
| RST | Reset Input | Active-high reset; internally pulled down; initiates cold start or recovery after power-fail reset condition |
Key Features
| Feature | Design Value |
|---|---|
| In-system reprogrammability | Serial Bootstrap Loader enables field firmware updates without removing device or using external programmers |
| Crash-proof memory retention | External lithium cell preserves SRAM contents, CE1/CE2 states, and BA14 for ≥10 years during power loss |
| Hardware-enforced security | Encrypted program execution prevents code observation; security lock erases memory on unlock attempt |
| Dedicated nonmultiplexed memory bus | BA14–BA0 + BD7–BD0 frees all 32 I/O pins for application use-no port multiplexing overhead |
| Three-level power-fail management | Configurable interrupt (2Bh vector), hard reset, and seamless VLI switchover ensure deterministic behavior under brownout |
Applications
| Data Logger | Industrial Controller |
|---|---|
|
Use Scenario: Continuous environmental sensor sampling with timestamped storage during mains failure. IC Role / Device Role / Timing Role: Primary controller executing adaptive logging routines, managing RTC synchronization, and preserving volatile buffers via lithium-backed NV SRAM. Use Value: Maintains full operational state and unsent data for >10 years on coin-cell backup-eliminates need for EEPROM wear leveling or flash endurance management. |
Use Scenario: PLC-like system monitoring machine status and triggering safety shutdowns during grid instability. IC Role / Device Role / Timing Role: Real-time decision engine using 8051-compatible timers and interrupts to enforce deterministic response windows under brownout conditions. Use Value: Power-fail interrupt (2Bh) provides 100+ µs warning before reset, enabling graceful I/O deactivation and fault flagging prior to VCC collapse. |
| Secure Firmware Node | Portable Medical Device |
|
Use Scenario: Tamper-resistant diagnostic instrument requiring encrypted firmware and zero-trust boot integrity. IC Role / Device Role / Timing Role: Secure execution environment enforcing encrypted program loading and irreversible security lock activation. Use Value: Hardware-level encryption prevents reverse engineering; unlock attempt permanently destroys stored keys and application logic. |
Use Scenario: Battery-powered patient monitor storing vital sign history across repeated charge/discharge cycles. IC Role / Device Role / Timing Role: Low-power host managing sensor interfaces, display updates, and nonvolatile event logging with minimal quiescent current (5–75 nA on VLI). Use Value: Battery-backed VCCO sustains SRAM and RTC during deep sleep-enabling multi-year data retention on single CR2032 cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS5000T-16 | Pre-integrated module: DS5000FP-16 + 32 kB SRAM + lithium cell + optional RTC in 40-pin DIP | Reduces board space and BOM count but sacrifices pin-level flexibility and custom memory sizing | Select DS5000T-16 for rapid prototyping or space-constrained designs where fixed 32 kB NV RAM suffices |
| DS2250T-16 | SIMM-form-factor module with identical core + dual 32 kB SRAM banks (CE1 + CE2) and RTC option | Targets memory-dense applications like firmware update staging or dual-bank failover logging | Choose DS2250T-16 when requiring field-upgradable firmware images with atomic bank switching capability |
Compared with DS5000FP-16, DS5000T-16 trades layout flexibility for integration simplicity, while DS2250T-16 adds SIMM packaging and dual-SRAM support-neither offers direct pin compatibility, but all three share identical instruction set, memory map, and lithium-backup architecture.
Availability
DS5000FP-16 is available at Aetrix Electronics and suitable for industrial data loggers, secure firmware nodes, portable medical devices, and power-critical control systems requiring stable component supply across extended product lifecycles.
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 precision analog, mixed-signal, and secure microcontroller solutions for industrial, medical, and communications applications.
The DS5000FP product line delivers 8051-compatible microcontrollers with integrated nonvolatile SRAM and lithium-backed power-fail resilience-targeting applications where firmware updatability, data persistence, and tamper resistance are critical.
FAQ
What is the maximum operating frequency of the DS5000FP-16?
The DS5000FP-16 is rated for a maximum clock speed of 16 MHz across its full 0°C to +70°C operating temperature range. This specification is validated per AC Characteristics Table on page 11 of the datasheet, with timing margins maintained at worst-case VCC = 4.5 V and TA = +70°C. The DS5000FP-16 achieves deterministic instruction execution at this rate using its internal oscillator or external crystal drive.
How does the DS5000FP-16 retain memory during power loss?
The DS5000FP-16 retains memory during power loss by switching to an external lithium cell connected to the VLI pin. When VCC drops below VLI (3.3 V nominal), internal circuitry activates VCCO to supply backup power to SRAM, while lithium-backed signals-including BA14, CE1, and CE2-preserve memory addressing and chip select states. This architecture ensures ≥10 years of data retention with proper cell selection.
Can the DS5000FP-16 execute encrypted programs?
Yes, the DS5000FP-16 executes encrypted programs to prevent observation of firmware content. Its hardware security block decrypts code in real time during fetch cycles, and the security lock feature prevents unauthorized download-any unlock attempt irreversibly destroys all program and data memory contents. This capability is documented in the Secure Microcontroller User's Guide referenced in the DS5000FP-16 datasheet.
What is the function of the BA14–BA0 and BD7–BD0 buses on the DS5000FP-16?
The BA14–BA0 (15-bit) and BD7–BD0 (8-bit) buses form a nonmultiplexed byte-wide interface for accessing external NV SRAM. Unlike standard 8051 multiplexed buses, this dedicated path eliminates address latching overhead and frees all 32 I/O port pins for application use. BA14 is lithium-backed to maintain valid address state during VLI switchover, ensuring uninterrupted memory access during power transitions.
Does the DS5000FP-16 support in-system programming?
Yes, the DS5000FP-16 supports in-system programming via its on-chip Serial Bootstrap Loader, accessible through the P3.0/RXD and P3.1/TXD pins. This loader validates incoming code before writing to NV SRAM and becomes transparent after initialization-requiring no external programming hardware. The DS5000FP-16 also supports parallel programming mode using VPP = 13 V for high-volume manufacturing.
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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