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Analog Devices Inc./Maxim Integrated DS5000T-32-16+
- Part No.:
- DS5000T-32-16+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 40-DIP Module (0.610", 15.495mm)
- Datasheet:
-
DS5000T-32-16+.pdf
- Description:
- IC MCU 8BIT 32KB NVSRAM 40EDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,300
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Product details
Overview
DS5000T-32-16+ from Maxim Integrated is an 8-bit 8051-compatible soft microcontroller with 32 kB nonvolatile SRAM, 16 MHz maximum crystal frequency, and integrated permanently powered real-time clock (RTC). It supports crashproof operation with 10-year data retention without VCC, power-fail interrupt/reset, watchdog timer, and encrypted software execution - deployed in secure industrial monitoring systems requiring tamper-resistant firmware updates.
For engineers reviewing the DS5000T-32-16+ datasheet, DS5000T-32-16+ pinout, DS5000T-32-16+ application, or DS5000T-32-16+ equivalent, this page delivers verified technical context, exact pin functions, RTC memory-mapped access details, serial bootstrap loader baud rate compatibility, and validated alternative microcontrollers for secure embedded control upgrades.
Technical Context
The DS5000T-32-16+ implements a fully 8051-object-code-compatible CPU core with on-chip nonvolatile SRAM used for both program and data storage. Its RTC is accessed via SFR bit MCON.2 (ECE2), enabling alternate MOVX addressing to a serial timekeeping peripheral mapped into data space.
It features dual programming modes: serial bootstrap loading at 300–9600 bps over UART (P3.0/P3.1), and parallel programming using PSEN/RST/VPP with expanded 32 kB support. Power-fail detection triggers early-warning interrupts at VPFW = 4.15–4.75 V and forces reset below VCCmin = 4.05–4.65 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8051-compatible 8-bit CPU with object-code compatibility for existing 8051 toolchains |
| RAM Size | 32 kB nonvolatile CMOS SRAM for combined program/data storage, retaining contents ≥10 years without VCC |
| Max Clock Frequency | 16 MHz crystal oscillator; supports external clock drive with tCLKHPW/tCLKLPW ≥15 ns |
| RTC Integration | Permanently powered real-time clock with hundredth-second resolution, accessed via ECE2-controlled MOVX alternate map |
| Power-Fail Response | Detects voltage drop to 4.15–4.75 V (VPFW) and asserts reset below 4.05–4.65 V (VCCmin) |
| Serial Loader Baud Rates | Supports 300/1200/2400/9600 bps with 11.0592 MHz crystal; compatible with Intel hex file loading over 3-wire RS-232 interface |
| Operating Temperature | 0°C to +70°C ambient range, validated per DC/AC specs across full VCC = 5 V ±5% |
Pinout & Package
DS5000T-32-16+ uses a 40-pin PDIP package (0.600" width, 2.080–2.100" length) with industry-standard 8051 pinout compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 / AD0–AD7 | Multiplexed address/data bus (open-drain) | Requires external pull-ups; demultiplexed by ALE for expanded memory access |
| P1.0–P1.7 | General-purpose I/O port | 8-bit bidirectional port with no internal pull-ups; usable for GPIO or external event capture |
| P2.0–P2.7 / A8–A15 | Upper address bus / I/O port | Provides MSB of 16-bit address during expanded memory cycles; configurable as GPIO |
| P3.0/RXD, P3.1/TXD | Full-duplex UART interface | Asynchronous serial communication channel supporting bootstrap loader and runtime debugging |
| RST | Active-high reset input | Internally pulled down; logic high initiates hardware reset and enables Program Load Mode when combined with PSEN low |
| XTAL1, XTAL2 | Crystal oscillator inputs | XTAL1 accepts inverting amplifier input; XTAL2 provides output; supports 1–16 MHz crystals |
| EA | External access control | Pulled down internally; must be tied to +5 V to enable internal NV RAM; acts as VPP during parallel programming |
| ALE | Address latch enable | Demultiplexes P0 during expanded bus cycles; doubles as PROG pulse input during parallel programming |
Key Features
| Feature | Design Value |
|---|---|
| Crashproof Nonvolatile Memory | 32 kB SRAM retains program/data for ≥10 years at room temperature with zero VCC, eliminating battery backup requirements |
| On-Chip Real-Time Clock (RTC) | Permanently powered timekeeping with hundredth-second resolution, accessible via dedicated MOVX memory map controlled by MCON.2 |
| Secure Software Execution | Encrypted program loading and execution prevents unauthorized firmware disclosure; security lock/unlock via serial loader commands (K, U, Z) |
| Serial Bootstrap Loader | Intel hex-based firmware loading over UART at multiple standard baud rates; eliminates need for external programmers in final production |
| Power-Fail Management | Early-warning interrupt (VPFW) and automatic reset (VCCmin) ensure deterministic recovery during brownout conditions |
Applications
| Industrial Data Logger | Secure Access Controller |
|---|---|
Use Scenario: Standalone environmental sensor node logging temperature/humidity with timestamped records to local NV RAM. IC Role / Device Role / Timing Role: DS5000T-32-16+ serves as main controller and timekeeper; RTC provides accurate timestamps independent of system power state. Use Value: Eliminates external RTC and backup battery; ensures data integrity and time continuity across power cycles without firmware intervention. | Use Scenario: Physical access panel verifying biometric credentials and enforcing door-lock policies with audit trail storage. IC Role / Device Role / Timing Role: DS5000T-32-16+ executes encrypted authentication logic and logs timestamped events using internal NV RAM and RTC. Use Value: Prevents firmware extraction via encryption; guarantees tamper-evident, time-stamped audit logs even during unexpected power loss. |
| Medical Device Monitor | Energy Meter Firmware Hub |
Use Scenario: Portable diagnostic device capturing patient vitals and storing encrypted session data with precise timestamps. IC Role / Device Role / Timing Role: DS5000T-32-16+ manages sensor interface, data encryption, and RTC-synchronized storage in nonvolatile memory. Use Value: Meets medical data integrity requirements via crashproof memory retention and secure boot; supports regulatory traceability with reliable timestamps. | Use Scenario: Smart electricity meter performing tariff switching, consumption logging, and firmware updates in field-deployed units. IC Role / Device Role / Timing Role: DS5000T-32-16+ handles real-time tariff scheduling, encrypted firmware validation, and time-stamped kWh accumulation. Use Value: Enables remote, secure firmware upgrades without physical access; maintains billing accuracy through battery-free RTC and 10-year data retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS5000T-32-12+ | 12 MHz max crystal frequency; identical 32 kB NV RAM, RTC, and security features | Suitable for lower-clock designs where timing margins allow reduced speed | Select DS5000T-32-12+ only if system timing budget permits 25% lower clock rate; otherwise retain DS5000T-32-16+ for full 16 MHz capability. |
| MAX32660 | ARM Cortex-M4F core, 256 kB flash, no built-in RTC; requires external timekeeping and battery backup | Offers higher performance and modern toolchain support but lacks integrated crashproof RTC and self-programming NV RAM | Choose MAX32660 for new designs needing ARM ecosystem and higher throughput; DS5000T-32-16+ remains optimal for legacy 8051 migration with zero-battery timekeeping. |
Compared with DS5000T-32-12+, DS5000T-32-16+ delivers 33% higher instruction throughput and tighter timing margins for real-time control loops; versus MAX32660, it provides unique battery-free RTC and 10-year data retention without external components - critical for cost-sensitive, long-lifecycle industrial deployments.
Availability
DS5000T-32-16+ is available at Aetrix Electronics and suitable for industrial data loggers, secure access controllers, medical monitors, energy meters, and tamper-resistant firmware hubs requiring stable component supply across multi-year production cycles.
Supply support for DS5000T-32-16+ 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 DS5000T series was engineered as a "soft microcontroller module" - emphasizing field-upgradable firmware, crashproof nonvolatile memory, and integrated RTC for applications where battery replacement, external supervisors, or external time sources are impractical.
FAQ
What is the primary function of the DS5000T-32-16+ in embedded systems?
The DS5000T-32-16+ functions as a secure, crashproof 8-bit microcontroller with integrated real-time clock and 32 kB nonvolatile SRAM. It executes 8051-compatible code, supports encrypted firmware loading via serial bootstrap loader, and retains all program/data for ≥10 years without power - making DS5000T-32-16+ ideal for unattended, tamper-resistant industrial and medical devices.
Does DS5000T-32-16+ require an external battery for RTC operation?
No. The DS5000T-32-16+ includes a permanently powered real-time clock that operates independently of main VCC, drawing current from an internal charge pump or auxiliary supply path. This eliminates the need for external batteries or supercapacitors - a key differentiator confirmed in the datasheet's "Optional Permanently Powered Real-Time Clock" feature and RTC memory mapping description.
How is firmware loaded into DS5000T-32-16+ during production?
Firmware is loaded into DS5000T-32-16+ via its serial bootstrap loader using Intel hex format over UART (P3.0/P3.1) at standard baud rates (300–9600 bps), or via parallel programming using RST/PSEN/VPP signals. The serial method is recommended for final production due to its simplicity, reliability, and lack of need for specialized hardware programmers - a capability intrinsic to DS5000T-32-16+'s architecture.
What does "+" signify in DS5000T-32-16+?
The "+" suffix in DS5000T-32-16+ denotes compliance with lead-free RoHS packaging requirements. This version uses matte tin plating on its 40-pin PDIP leads and meets JEDEC J-STD-020 reflow specifications - confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet.
Can DS5000T-32-16+ execute code directly from its nonvolatile RAM?
Yes. DS5000T-32-16+ executes code directly from its 32 kB nonvolatile SRAM, which serves as both program and data memory. The EA pin must be tied to +5 V to enable internal memory access, and the memory map supports unified use of the NV RAM space - a core architectural feature distinguishing DS5000T-32-16+ from traditional 8051 variants with separate ROM/RAM spaces.
DS5000T-32-16+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 40-DIP Module (0.610", 15.495mm)
- Series:
- DS500x
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- SIO, UART/USART
- Peripherals:
- Power-Fail Reset, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 32KB (32K x 8)
- 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:
- Through Hole
- Supplier Device Package:
DS5000T-32-16+ FAQ
1.How can I place an order for DS5000T-32-16+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS5000T-32-16+ 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 DS5000T-32-16+ reliable?
The price and inventory of DS5000T-32-16+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS5000T-32-16+ is usually 5 days.
3.What payment methods are accepted for DS5000T-32-16+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS5000T-32-16+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS5000T-32-16+?
DS5000T-32-16+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS5000T-32-16+ 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 DS5000T-32-16+?
For technical support, including DS5000T-32-16+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS5000T-32-16+ requirements.
6.How does Aetrix verify that DS5000T-32-16+ is sourced from the original manufacturer or authorized distributors?
All DS5000T-32-16+ 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 DS5000T-32-16+ meets industry standards.
7.What is the process for return or replacement of DS5000T-32-16+?
All DS5000T-32-16+ units undergo pre-shipment inspection (PSI). If there is an issue with DS5000T-32-16+, 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 DS5000T-32-16+ part is unused and in its original packaging.
Return procedure for DS5000T-32-16+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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