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Analog Devices Inc./Maxim Integrated DS5001FP-16
- Part No.:
- DS5001FP-16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
DS5001FP-16.pdf
- Description:
- IC MCU 8BIT EXTRNL NVSRAM 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,604
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Product details
Overview
DS5001FP-16 from Maxim Integrated is an 8051-compatible nonvolatile SRAM-based microprocessor with 128kB on-chip programmable memory, 32 parallel I/O pins, two timer/counters, and an on-chip UART-designed for data-logging, adaptive firmware, and battery-backed embedded control in industrial power-monitoring systems.
For engineers reviewing the DS5001FP-16 datasheet, DS5001FP-16 pinout, DS5001FP-16 application, or DS5001FP-16 equivalent, this page delivers verified electrical specs, lithium-backed power-fail handling, byte-wide bus timing, and real-world use cases for secure, long-retention embedded computing.
Technical Context
The DS5001FP-16 implements a full 8051 instruction set with nonmultiplexed byte-wide address (BA14–BA0) and data (BD7–BD0) buses, enabling direct SRAM interfacing without consuming I/O ports. It supports dynamic memory partitioning between program and data space, up to 252kB total accessible memory via bank switching.
Its power management includes precision bandgap-based voltage monitoring (VPFW = 4.37V typ, VCCMIN = 4.12V typ), early-warning power-fail interrupt at VPFW, hardware reset at VCCMIN, and seamless lithium backup switchover at VLI (2.5V–4.0V). All chip enables (CE1–CE4, PE1–PE2) and VRST/PF are lithium-backed for guaranteed state retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8051-compatible CPU with object-code compatibility for existing assemblers and compilers |
| Nonvolatile Memory | 128kB NV SRAM with >10-year data retention using external lithium cell |
| Max Clock Speed | 16MHz - enables full-speed execution of time-critical control loops and serial bootloading |
| I/O Resources | 32 general-purpose parallel I/O pins (P0–P3), plus dedicated byte-wide bus (BA14–BA0, BD7–BD0) |
| Power Monitoring | Integrated bandgap reference with programmable VPFW (4.37V) and VCCMIN (4.12V) trip points |
| Package | 80-pin MQFP (24.0mm × 18.0mm body, 0.8mm pitch) - RoHS-compliant, surface-mount compatible |
| Operating Temp | 0°C to +70°C - validated for commercial-grade industrial control and metering applications |
Pinout & Package
DS5001FP-16 is housed in an 80-pin MQFP package with 0.8mm lead pitch, 24.0mm × 18.0mm body size, and exposed thermal pad. Pin functions are validated per Maxim DS5001FP datasheet Rev 070605.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Port 0 I/O / Address-Data Bus (multiplexed in expanded mode) | Open-drain port requiring external pullups; serves as lower byte of address/data bus during external memory access |
| P1.0–P1.7 | General-purpose I/O port | True bidirectional CMOS I/O with no internal pullups; usable for GPIO, interrupts, or custom peripheral control |
| P2.0–P2.7 | Port 2 I/O / High-order address bus (A8–A15) | Provides MSB address bits during expanded memory access; also supports RPC mode for real-time clock interface |
| P3.0/RXD, P3.1/TXD | UART serial interface | Full-duplex asynchronous communication channel; requires level-shifting for PC COM port connection |
| RST | Active-high reset input | Internally pulled down; eliminates need for external RC reset circuitry |
| XTAL1/XTAL2 | Crystal oscillator connections | Supports 1–16MHz fundamental-mode crystals; XTAL1 is inverter input, XTAL2 is output |
| BA0–BA14 | Byte-wide address bus | 15-bit nonmultiplexed address lines driving SRAM address inputs directly; BA15 omitted due to internal CE decoding |
| BD0–BD7 | Byte-wide data bus | 8-bit bidirectional data path for NV SRAM read/write; shares timing with CE1–CE4 and R/W signals |
| R/W | Read/Write strobe | Active-low signal controlling SRAM write enable; automatically deasserted for ROM-mapped code segments |
| CE1–CE4 | Lithium-backed chip enables | Four decoded enables for up to four 32kB SRAM blocks; remain logic-high during VCC dropout to prevent spurious writes |
| PE1–PE4 | Peripheral enable outputs | Four memory-mapped peripheral selects (0000h–FFFFh); PE1–PE2 are lithium-backed for RTC and battery-backed peripherals |
| VRST | Power-fail reset indicator | Open-drain output driven low when VCC < VCCMIN; guaranteed active even at VCC = 0V for synchronized multi-device shutdown |
| PF | Lithium switchover flag | Active-low signal indicating transition to lithium backup; used to isolate non-backed peripherals from battery load |
| MSEL | Memory size select | Hardwired high/low to configure for 32kB × 4 or single 128kB SRAM; required for correct address decoding |
| VCCO | Switched power output | Outputs either VCC or VLI (minus ~0.45V drop); powers VCC pins of battery-backed SRAM during backup mode |
| VLI | Lithium voltage input | Accepts 2.5–4.0V lithium cell; internal switch isolates battery until VCC drops below VLI threshold |
Key Features
| Feature | Design Value |
|---|---|
| In-system reprogrammability | On-chip serial bootstrap loader enables field firmware updates without removing the device from the PCB |
| Self-modifying code support | Allows runtime modification of program memory - essential for adaptive algorithms and over-the-air configuration |
| Hardware CRC-16 engine | Performs automatic integrity check of NV RAM contents during power-up or on-demand, reducing software overhead |
| Dual power domains | Separate VCC and VLI supplies with automatic switchover ensure continuous operation and state retention during main power loss |
| Watchdog timer + early-warning interrupt | Prevents system lockup via hardware reset and provides 150ms warning window before VCCMIN to save critical data |
| Nonmultiplexed memory bus | BA14–BA0 + BD7–BD0 + R/W + CE1–CE4 frees all 32 I/O pins for application use - no bus contention or port sharing |
Applications
| Smart Energy Metering | Industrial Data Logger |
|---|---|
|
Use Scenario: Long-term voltage, current, and energy consumption logging in utility meters with tamper-resistant storage. IC Role / Device Role / Timing Role: Primary controller and nonvolatile data store - executes metering firmware while retaining decades of timestamped logs in battery-backed SRAM. Use Value: Eliminates external EEPROM/Flash and associated wear-leveling firmware; 128kB NV SRAM enables >10 years of 1-minute interval logging without data loss. |
Use Scenario: Remote environmental monitoring in unattended sites (e.g., water quality, temperature, pressure) with infrequent maintenance. IC Role / Device Role / Timing Role: Standalone data acquisition node - samples sensors, timestamps readings, and stores results in lithium-backed memory during mains outage. Use Value: Guaranteed 10+ year data retention at room temperature using standard CR2032 cell; no external backup power management IC required. |
| Secure Firmware Updater | Real-Time Clock Integration |
|
Use Scenario: Field-deployed medical or industrial equipment requiring cryptographically signed firmware patches. IC Role / Device Role / Timing Role: Trusted execution environment - verifies digital signatures, loads new code into NV RAM, and validates CRC before reboot. Use Value: Self-contained security model avoids external secure element; DS5002FP variant adds enhanced firmware protection if needed. |
Use Scenario: Time-stamped event recording in access control panels, alarm systems, or process controllers. IC Role / Device Role / Timing Role: Host controller for Dallas DS1283/DS1302 RTC - uses PE1/PE2 enables and byte-wide bus to read/write time registers without I/O port allocation. Use Value: Direct RTC integration preserves all 32 I/O pins; lithium backup ensures clock continues running during main power failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS5001FP-12-44 | 44-pin MQFP, 12MHz max clock, identical core and NV SRAM architecture | Reduced footprint and I/O count; lacks PE3/PE4 and some BA/BD lines - limited to ≤64kB memory mapping | Select for space-constrained designs where 128kB memory and full peripheral enable set are not required |
| DS5002FP-16 | Pin- and function-compatible with DS5001FP-16 but adds hardware-based firmware encryption and write-protection keys | Required for applications needing certified firmware integrity (e.g., payment terminals, regulated medical devices) | Choose when cryptographic firmware security is mandated - same layout, no PCB changes needed |
Compared with DS5001FP-16, the DS5001FP-12-44 trades memory scalability and peripheral flexibility for compactness, while the DS5002FP-16 adds tamper-resistant firmware protection without altering timing, power, or memory interface behavior.
Availability
DS5001FP-16 is available at Aetrix Electronics and suitable for smart metering, industrial data logging, secure firmware update, and real-time clock integration requiring stable component supply across extended product lifecycles.
Supply support for DS5001FP-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-reliability analog and mixed-signal ICs for industrial, automotive, and communications markets.
The DS5001FP product line delivers nonvolatile microcontrollers built on NV SRAM technology - engineered for applications demanding long-term data retention, in-field reprogrammability, and robust power-fail resilience.
FAQ
What is the maximum memory capacity supported by DS5001FP-16?
The DS5001FP-16 supports up to 252kB of accessible data memory through bank switching: primary 64kB, secondary 64kB via peripheral selector, additional 64kB via expanded bus, and up to 60kB converted from program space. Its native NV SRAM capacity is 128kB, configurable as program or data segments at load time.
Does DS5001FP-16 require an external crystal oscillator?
Yes, DS5001FP-16 requires an external crystal connected between XTAL1 and XTAL2 pins to operate at its rated 16MHz speed. The internal oscillator supports fundamental-mode crystals from 1MHz to 16MHz; ceramic resonators are not recommended due to startup and stability requirements.
How does DS5001FP-16 handle power failure events?
DS5001FP-16 detects falling VCC with a precision bandgap reference: it triggers a power-fail interrupt at VPFW (4.37V typ), asserts hardware reset at VCCMIN (4.12V typ), and switches to lithium backup at VLI (2.5–4.0V). Signals VRST and PF remain active even at VCC = 0V to coordinate system shutdown.
Can DS5001FP-16 execute code directly from external memory?
No, DS5001FP-16 executes only from its internal 128kB NV SRAM. External memory (e.g., SRAM, RTC) is accessed via MOVX instructions for data reads/writes only. Program code must be loaded into NV SRAM via the on-chip serial bootstrap loader or in-system programming.
Is DS5001FP-16 pin-compatible with other 8051-family microcontrollers?
DS5001FP-16 is instruction-set compatible with the 8051 but not pin-compatible with standard 8051 variants due to its unique byte-wide bus (BA/BD pins), lithium backup interface (VLI, VCCO, PF, VRST), and expanded peripheral enables (PE1–PE4). Its 80-pin MQFP footprint is specific to the DS5001FP family.
DS5001FP-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):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DS5001FP-16 FAQ
1.How can I place an order for DS5001FP-16 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS5001FP-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 DS5001FP-16 reliable?
The price and inventory of DS5001FP-16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS5001FP-16 is usually 5 days.
3.What payment methods are accepted for DS5001FP-16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS5001FP-16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS5001FP-16?
DS5001FP-16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS5001FP-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 DS5001FP-16?
For technical support, including DS5001FP-16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS5001FP-16 requirements.
6.How does Aetrix verify that DS5001FP-16 is sourced from the original manufacturer or authorized distributors?
All DS5001FP-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 DS5001FP-16 meets industry standards.
7.What is the process for return or replacement of DS5001FP-16?
All DS5001FP-16 units undergo pre-shipment inspection (PSI). If there is an issue with DS5001FP-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 DS5001FP-16 part is unused and in its original packaging.
Return procedure for DS5001FP-16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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