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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:
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Product details
Overview
DS5001FP-16+ from Maxim Integrated is an 8051-compatible nonvolatile SRAM-based microprocessor with 128kB NV RAM, 16MHz max clock, 32 I/O pins, on-chip serial bootstrap loader, and lithium-backed power-fail protection - designed for data-logging, adaptive firmware, and secure embedded systems requiring long-term memory retention without external EEPROM or Flash.
For engineers reviewing the DS5001FP-16+ datasheet, DS5001FP-16+ pinout, DS5001FP-16+ application, or DS5001FP-16+ equivalent, key selection considerations include byte-wide bus timing (tAVDV = 9tCLK − 105 ns @16MHz), VCCMIN = 4.00–4.25V reset threshold, lithium-backed CE1–CE4/PE1–PE2 enables, R/W-controlled NV RAM write-protection, and MSEL-driven 32kB vs. 128kB SRAM mode configuration.
Technical Context
The DS5001FP-16+ implements a full 8051 instruction set with two timer/counters, UART, and 32-bit parallel I/O while replacing ROM with battery-backed NV SRAM - enabling in-system reprogramming and self-modifying code execution. Its nonmultiplexed byte-wide bus (BA14–0 / BD7–0) decouples memory access from I/O port usage.
Power management integrates precision bandgap-based VPFW (4.25–4.50V) early-warning interrupt, VCCMIN-triggered reset, and seamless VCC-to-VLI switchover with VRST and PF status outputs. All chip enables (CE1–CE4, PE1–PE2) remain logic-high during backup, preserving peripheral state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8051-compatible CPU with object-code compatibility for standard assemblers and compilers |
| Nonvolatile Memory | 128kB NV SRAM with lithium backup (>10 years retention at +25°C) |
| Max Clock Speed | 16MHz - supports tAVDV = 9tCLK − 105 ns read timing for high-speed SRAM interfacing |
| I/O Resources | 32 parallel GPIO pins (P0–P3), all usable for application logic due to dedicated byte-wide bus |
| Power Monitoring | VCCMIN = 4.00–4.25V (0°C to +70°C); VPFW = 4.25–4.50V for early-warning interrupt at 2Bh vector |
| Package | 80-pin MQFP (24.0 × 18.0 mm body, 0.8 mm pitch) |
| Operating Temp | 0°C to +70°C - validated DC/AC specs including IIDLE = 7.0 mA @12MHz idle current |
Pinout & Package
DS5001FP-16+ uses an 80-pin MQFP package (24.0 × 18.0 mm body, 0.8 mm pitch, 3.4 mm max height) with exposed thermal pad per Maxim package drawing 56-G4005-001. Pin functions are validated per official DS5001FP datasheet Rev 070605, pages 4–6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Open-drain I/O / Address-Data Bus (AD0–AD7) | Serves as multiplexed expanded bus in 8051 mode; open-drain requires external pullups unless used as AD bus |
| P1.0–P1.7 | General-purpose I/O | Full CMOS push-pull I/O; no alternate functions - reserved exclusively for application use |
| P2.0–P2.7 | I/O / High-order address (A8–A15) | Provides A8–A15 in expanded mode; also functions as general I/O when not addressing external memory |
| P3.0/RXD, P3.1/TXD | UART serial interface | On-chip serial port for bootstrap loading; requires level-shifting for direct PC COM port connection |
| RST | Active-high reset input | Internally pulled down; RC power-on reset not required or recommended |
| XTAL1/XTAL2 | Crystal oscillator inputs | Supports fundamental-mode crystals up to 16MHz; XTAL1 is inverter input, XTAL2 is output |
| BA0–BA14 | Byte-wide address bus | Direct connection to SRAM address lines; BA15 omitted - CE2/CE3 repurposed as A15/A16 in 128kB mode |
| BD0–BD7 | Byte-wide bidirectional data bus | Connects directly to SRAM data I/O; supports MOVX instructions without port multiplexing overhead |
| R/W | Read/write strobe | Controls SRAM WE#; automatically enforces write-protection on program-memory segments |
| CE1–CE4 | Lithium-backed chip enables | Remain logic-high during VCC dropout; enable up to four 32kB SRAM blocks or peripherals |
| PE1–PE4 | Peripheral enables (PE1–PE2 lithium-backed) | Access 16kB memory-mapped peripheral windows (0000h–FFFFh); PE1–PE2 retain state during backup |
| VCCO | Switched VCC output | Automatically routes VCC or VLI to SRAM VCC pin; drops ~0.45V under load - mandates low-IDD SRAM |
| VLI | Lithium voltage input | Accepts 2.5–4.0V lithium cell; powers VCCO, CE/PE outputs, and NV RAM retention when VCC < VLI |
| VRST | Power-fail reset indicator | Open-drain I/O driven low when VCC < VCCMIN; guaranteed active even at VCC = 0V |
| PF | Power-fail switchover flag | Drives low when VCC < VLI; used to isolate non-battery-backed circuitry during backup mode |
| MSEL | Memory size select | Hardwired to VCC (32kB mode) or GND (128kB mode); determines CE2/CE3 remapping to A16/A15 |
| PROG | Bootstrap loader trigger | Falling edge initiates serial loader; internally pulled up - debounced externally to prevent spurious entry |
Key Features
| Feature | Design Value |
|---|---|
| In-system programmability | On-chip serial bootstrap loader validates firmware before execution and becomes transparent - eliminates need for external programmers |
| Self-modifying code support | Application software can rewrite its own program or data memory in NV SRAM - enables field-upgradable logic and adaptive behavior |
| Dedicated byte-wide bus | BA14–0 + BD7–0 + R/W provides nonmultiplexed memory access - frees all 32 I/O pins for application use |
| Lithium-backed reliability | CE1–CE4, PE1–PE2, VRST, PF, and VCCO retain state during VCC dropout - ensures deterministic power-fail response and memory integrity |
| Dynamic memory partitioning | Special function registers allow runtime reconfiguration of 64kB program/data space - supports flexible memory mapping without hardware changes |
| CRC-16 memory validation | Hardware CRC-16 engine verifies NV RAM contents on boot - detects corruption from power loss or radiation events |
Applications
| Data Logger with Long-Term Retention | Adaptive Industrial Controller |
|---|---|
Use Scenario: Continuous environmental sensor sampling in remote substations with infrequent maintenance. IC Role / Device Role / Timing Role: DS5001FP-16+ acts as main controller and nonvolatile data store - logging timestamps, temperature, humidity, and fault events into its 128kB NV SRAM. Use Value: Eliminates external EEPROM/Flash and backup capacitors; lithium-backed memory retains >10 years of data without refresh or external power. |
Use Scenario: Field-deployed PLC updating control algorithms based on real-time process feedback. IC Role / Device Role / Timing Role: DS5001FP-16+ executes adaptive PID tuning routines and stores updated coefficients in NV SRAM - recompiling logic on-the-fly via serial interface. Use Value: Enables over-the-air firmware updates without hardware replacement; self-modifying code reduces downtime and service calls. |
| Secure Metering Module | RTC-Integrated Embedded System |
Use Scenario: Smart electricity meter requiring tamper-resistant firmware and audit-log storage. IC Role / Device Role / Timing Role: DS5001FP-16+ hosts encrypted metering firmware and logs billing cycles, outage events, and security violations in write-protected NV RAM segments. Use Value: Hardware-enforced write-protection on program memory prevents unauthorized code injection; CRC-16 ensures log integrity across power cycles. |
Use Scenario: Battery-powered IoT node synchronizing sensor reads with precise time stamps. IC Role / Device Role / Timing Role: DS5001FP-16+ interfaces with Dallas DS1283 RTC via PE1-enabled memory-mapped I/O - reading time/date and triggering timestamped data captures. Use Value: Byte-wide bus allows direct RTC register access without consuming GPIO; lithium backup maintains RTC and micro state simultaneously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS5001FP-16N+ | Same core, but rated for -40°C to +85°C industrial temp range; VCCMIN = 3.85–4.25V; higher idle current (8.0 mA) | Required for outdoor, automotive, or factory-floor deployments where ambient exceeds +70°C | Select DS5001FP-16N+ only if extended temperature operation is mandatory - otherwise DS5001FP-16+ offers lower cost and identical functionality at commercial temp. |
| DS5002FP-16+ | Pin- and code-compatible with DS5001FP-16+, but adds hardware cryptographic engine, secure boot, and memory encryption | Required for applications needing FIPS-compliant firmware authentication or protected key storage (e.g., payment terminals, government devices) | Choose DS5002FP-16+ when firmware integrity and anti-tampering are critical - DS5001FP-16+ lacks secure boot and crypto acceleration. |
Compared with DS5001FP-16N+ and DS5002FP-16+, the DS5001FP-16+ delivers optimal cost-performance for commercial-temperature data-logging and adaptive control, trading extended temp range and hardware security for lower BOM cost and simpler certification.
Availability
DS5001FP-16+ is available at Aetrix Electronics and suitable for data-logging systems, adaptive industrial controllers, and secure metering applications requiring stable component supply, long-term memory retention, and in-system firmware updates.
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, medical, and communications markets - emphasizing precision, power efficiency, and robustness.
The DS5001FP product line delivers 8051-compatible microprocessors built around nonvolatile SRAM technology - targeting applications demanding field-upgradable firmware, deterministic power-fail behavior, and decade-long data retention without external backup components.
FAQ
What is the maximum SRAM capacity supported by DS5001FP-16+?
The DS5001FP-16+ supports up to 128kB of nonvolatile SRAM when MSEL is grounded, using CE2 and CE3 as A16 and A15. In 32kB mode (MSEL = VCC), it accesses four independent 32kB blocks. With bank switching and peripheral enable mapping, total accessible data memory reaches 252kB - though only 128kB is nonvolatile and lithium-backed. The DS5001FP-16+ does not support external Flash or EEPROM as primary program memory.
How does DS5001FP-16+ handle power failure and ensure data integrity?
The DS5001FP-16+ uses a precision bandgap reference to monitor VCC, triggering a power-fail warning interrupt at VPFW (4.25–4.50V), then a hard reset at VCCMIN (4.00–4.25V). When VCC drops below VLI (2.5–4.0V), it switches to lithium power and drives VRST low while holding CE1–CE4/PE1–PE2 high - preserving SRAM contents and peripheral states for >10 years. CRC-16 validation runs on boot to detect corruption.
Can DS5001FP-16+ execute code directly from its NV SRAM?
Yes - the DS5001FP-16+ executes code directly from its 128kB NV SRAM using the byte-wide bus (BA14–0 / BD7–0). Program memory segments are write-protected by hardware when designated as "ROM" in the memory map, preventing accidental overwrites. Unlike traditional 8051s, no external ROM or Flash is needed; firmware resides entirely in battery-backed SRAM.
What are the key timing constraints for interfacing DS5001FP-16+ with 128kB SRAM?
At 16MHz, DS5001FP-16+ requires tAVDV ≤ 123 ns (9×62.5ns − 105ns) for valid data after address setup, tCEPW ≥ 169 ns (4×62.5ns − 35ns) for CE pulse width, and tRWLPW ≥ 358 ns (6×62.5ns − 20ns) for write strobe width. SRAM must meet these AC specs - fast 15ns or better CMOS SRAM is recommended. The DS5001FP-16+ does not support asynchronous SRAM with wait-state insertion.
Is DS5001FP-16+ pin-compatible with other devices in the DS5001 family?
Yes - DS5001FP-16+, DS5001FP-16N+, DS5001FP-12-44+, and DS5001FP-12-44 share identical pinouts within their respective packages (80-pin MQFP or 44-pin MQFP). The DS5001FP-16+ is fully interchangeable with DS5001FP-16N+ on the same 80-pin footprint, differing only in temperature rating and associated DC specs - no PCB redesign is needed for upgrade to industrial grade.
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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