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Analog Devices Inc./Maxim Integrated MAXQ2000-RBX
- Part No.:
- MAXQ2000-RBX
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAXQ2000-RBX.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,085
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Product details
Overview
The MAXQ2000-RBX from Maxim Integrated is a low-power, 16-bit RISC microcontroller with integrated 100-segment LCD driver, 32kWords flash, 1kWord RAM, three 16-bit timers, and dual UART support. It operates up to 14MHz at VDD > 1.8V and features separate 1.8V core / 3V I/O supplies, ultra-low-power stop mode (700nA), and hardware multiply-accumulate. It is specifically optimized for battery-powered blood-glucose monitors.
For engineers reviewing the MAXQ2000-RBX datasheet, MAXQ2000-RBX pinout, MAXQ2000-RBX application, or MAXQ2000-RBX equivalent, key selection considerations include LCD segment count (100 vs. 132), core/I/O voltage separation, real-time clock accuracy, JTAG programmability, and sleep-mode current in portable medical instrumentation.
Technical Context
The MAXQ2000-RBX implements a static, accumulator-based 16-bit RISC core executing most instructions in one cycle, with a 16-level hardware stack and three auto-incrementing data pointers. Its memory architecture supports Harvard, pseudo-Von Neumann, and mixed-mapping modes, enabling code execution from SRAM and data access from flash.
It integrates a dedicated LCD controller supporting static, 1/2, and 1/3 bias with no external resistors required, plus a 32-bit binary RTC with time-of-day alarm, programmable watchdog, and hardware 16×16 MAC with 48-bit accumulator - all operating under multiple power management modes including PMM1 (190µA @ 8MHz) and stop mode (700nA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit static RISC with 16-level hardware stack and three auto-incrementing data pointers |
| Max Clock Frequency | 14MHz at VDD > 1.8V; enables ~14 MIPS performance in battery-constrained systems |
| Memory | 32kWords flash (10,000 write/erase cycles, 100-year retention) + 1kWord SRAM |
| LCD Support | 100-segment drive (static/1/2/1/3 bias); no external bias resistors needed |
| Power Modes | Stop mode: 700nA typical; PMM1 mode: 190µA @ 8MHz, 2.2V |
| Peripherals | Two UARTs, SPI, 1-Wire® (RAX/RFX variants only), 32-bit RTC, three 16-bit timers, 8-bit subsecond timer |
| I/O Supply | Dual supply: 1.8V core / 2.7–3.6V I/O enables low-power logic with robust interface flexibility |
Pinout & Package
The MAXQ2000-RBX is available in 56-pin TQFN (7mm × 7mm), 68-pin QFN (10mm × 10mm), and 100-pin LQFP (14mm × 14mm) packages. Pin functions are identical across packages; numbering differs per variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital core supply | 1.8V nominal; powers CPU, flash, RAM, and internal logic; must be decoupled near pin |
| VDDIO | I/O supply rail | 2.7–3.6V; powers GPIO, UART, SPI, LCD segment drivers; independent of VDD for mixed-voltage interfacing |
| VLCD, VLCD1, VLCD2, VADJ | LCD bias control | Enable precise contrast tuning and 1/3-bias operation without external resistors; VLCD sets max segment voltage |
| P0.0–P0.7, P1.0–P1.7, P2.0–P2.7, P3.0–P3.7, P6.4–P6.5, P7.0–P7.1 | LCD segment outputs | Configurable as bidirectional GPIO or LCD segment drivers; LCD function disables I/O on activation |
| P3.4–P3.7, P4.0–P4.3, P5.2–P5.3, P6.0–P6.3, P7.0–P7.1 | Interrupt-capable I/O | Edge-selectable external interrupts (INT0–INT15); interrupt enable must precede LCD configuration to avoid contention |
| HFXIN/HFXOUT, 32KIN/32KOUT | Crystal oscillator interfaces | Supports 3–20MHz high-frequency crystal and 32.768kHz watch crystal; internal load caps eliminate external components |
| RESET | Active-low reset input/output | Open-drain compatible; internal pullup; driven low during internal reset events; requires ≥2mA sink capability |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit RISC Core | Single-cycle instruction execution with 33 opcodes; optimized for C-compiler density and speed |
| Dual Voltage Rails | Independent 1.8V core and 2.7–3.6V I/O supply enables low-power computation while driving 3V peripherals |
| LCD Controller | 100-segment drive with static/1/2/1/3 bias modes; eliminates external bias resistors and reduces BOM cost |
| JTAG/UART Bootloader | Enables in-system programming and in-application flash updates without external programmers |
| Ultra-Low-Power Stop Mode | 700nA typical current draw allows multi-year battery life in glucose meters and portable sensors |
| Hardware Multiply-Accumulate | 16×16 MAC with 48-bit accumulator accelerates signal processing for sensor algorithms and calibration |
Applications
| Blood-Glucose Monitoring | Portable Electrochemical Sensors |
|---|---|
Use Scenario: Handheld, single-use or reusable glucose meter with LCD display, button interface, and electrochemical test-strip reading. IC Role / Device Role / Timing Role: Primary system controller managing strip insertion detection, analog front-end timing, ADC sampling, LCD refresh, and low-power sleep/wake cycles. Use Value: Integrated 100-segment LCD driver and 700nA stop mode extend CR2032 battery life beyond 2 years; dual voltage rails simplify analog front-end interfacing. | Use Scenario: Battery-powered handheld CO, O₂, or NO₂ detector with alphanumeric LCD readout and audible alarm. IC Role / Device Role / Timing Role: Real-time sensor data acquisition, calibration compensation, LCD update, and low-duty-cycle wake-up from deep sleep using RTC alarms. Use Value: Hardware 32-bit RTC with time-of-day alarm enables scheduled sensor readings; 190µA active current at 8MHz minimizes average power in duty-cycled operation. |
| Smart Thermostats | Industrial Data Loggers |
Use Scenario: Wall-mounted HVAC controller with segmented LCD, temperature/humidity sensing, and wireless communication interface. IC Role / Device Role / Timing Role: Main MCU handling environmental sensor polling, display refresh, user input scanning, and communication co-processor handshaking. Use Value: 32kWords flash accommodates firmware with OTA update capability; 1kWord RAM supports local data buffering and real-time control loops. | Use Scenario: Ruggedized field logger recording temperature, pressure, and humidity over weeks using AA batteries. IC Role / Device Role / Timing Role: Time-synchronized data acquisition engine with RTC timestamping, flash storage management, and periodic wake-up via 32kHz crystal. Use Value: 10,000 flash endurance and 100-year data retention ensure reliable long-term logging; ultra-low stop-mode current extends operational lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power LCD microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXQ2010-RAX | 132-segment LCD drive; adds SPI and 1-Wire® interfaces; same core, memory, and power specs | Required for displays exceeding 100 segments; 1-Wire® simplifies single-wire sensor connectivity | Select MAXQ2010-RAX when >100 LCD segments or 1-Wire® peripheral integration is needed |
| MSP430FR6989IPZ | Ferroelectric RAM (64kB FRAM), 16-bit RISC core, 160-segment LCD, but no hardware MAC or dedicated RTC alarm registers | Better for frequent data logging due to FRAM endurance; weaker RTC alarm granularity than MAXQ2000-RBX | Choose MSP430FR6989IPZ for high-write-cycle logging; retain MAXQ2000-RBX for precision RTC alarms and MAC-accelerated sensor math |
Compared with MAXQ2010-RAX and MSP430FR6989IPZ, the MAXQ2000-RBX delivers optimal balance of LCD segment count (100), ultra-low stop-mode current (700nA), and hardware RTC alarm precision - making it the preferred choice for compact, long-life medical meters where display size and power are tightly constrained.
Availability
MAXQ2000-RBX is available at Aetrix Electronics and suitable for blood-glucose monitoring, portable electrochemical sensors, and smart thermostats requiring stable component supply across production lifecycles.
Supply support for MAXQ2000-RBX 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 high-reliability semiconductor solutions for industrial, medical, and automotive markets.
The MAXQ2000-RBX belongs to the MAXQ family of ultra-low-power 16-bit microcontrollers engineered specifically for battery-operated medical instrumentation with integrated LCD control and deterministic real-time performance.
FAQ
What is the maximum LCD segment count supported by the MAXQ2000-RBX?
The MAXQ2000-RBX supports up to 100 LCD segments, as indicated by the "-RBX" suffix in its part number. This is distinct from the -RAX/-RFX variants, which support 132 segments. The 100-segment capability covers common alphanumeric and icon-based displays used in blood-glucose meters and portable sensors. The MAXQ2000-RBX achieves this with integrated bias generation - no external resistors required.
Does the MAXQ2000-RBX include a hardware real-time clock (RTC)?
Yes, the MAXQ2000-RBX includes a 32-bit binary real-time clock with time-of-day alarm functionality. It accepts a 32.768kHz crystal via the 32KIN/32KOUT pins and maintains accurate timekeeping even in ultra-low-power stop mode. The RTC alarm can trigger wake-up events independently of the main CPU, enabling precise scheduling of sensor readings or display updates in battery-powered applications using the MAXQ2000-RBX.
What power supply voltages does the MAXQ2000-RBX require?
The MAXQ2000-RBX requires two independent supplies: VDD (1.8V core, range 1.8V–2.75V) and VDDIO (I/O supply, 2.7V–3.6V). This dual-rail architecture allows low-power core operation while maintaining robust 3V-compatible I/O signaling. The MAXQ2000-RBX draws just 190µA at 8MHz in PMM1 mode (VDD = 2.2V), and only 700nA in stop mode - critical for CR2032-powered devices.
Can the MAXQ2000-RBX be programmed in-system after soldering?
Yes, the MAXQ2000-RBX supports in-system programming via its JTAG interface and UART bootloader. Flash memory can be reprogrammed without removing the device from the PCB. The utility ROM includes secure in-application programming routines, and flash protection is available via a 16-word password stored in physical addresses x0010h–x001Fh. This capability streamlines prototyping and field firmware updates for products based on the MAXQ2000-RBX.
Is SPI interface available on the MAXQ2000-RBX?
No, SPI is not available on the MAXQ2000-RBX. According to the official datasheet, SPI and 1-Wire® interfaces are exclusive to the -RAX, -RAX+, -RFX, and -RFX+ variants. The MAXQ2000-RBX provides UART, JTAG, and optional 1-Wire®-compatible timer outputs (via P6.2/P6.3), but lacks dedicated MOSI/MISO/SCLK pins. Designers requiring SPI must select MAXQ2000-RAX or verify alternate communication paths when using the MAXQ2000-RBX.
MAXQ2000-RBX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 56-WFQFN Exposed Pad
- Series:
- MAXQ®
- Packaging:
- Box
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- 1-Wire®, SPI, UART/USART
- Peripherals:
- LCD, POR, PWM, WDT
- Number of I/O:
- 50
- Program Memory Size:
- 64KB (32K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 2.75V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MAXQ2000-RBX FAQ
1.How can I place an order for MAXQ2000-RBX through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXQ2000-RBX 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 MAXQ2000-RBX reliable?
The price and inventory of MAXQ2000-RBX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXQ2000-RBX is usually 5 days.
3.What payment methods are accepted for MAXQ2000-RBX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXQ2000-RBX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXQ2000-RBX?
MAXQ2000-RBX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXQ2000-RBX 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 MAXQ2000-RBX?
For technical support, including MAXQ2000-RBX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXQ2000-RBX requirements.
6.How does Aetrix verify that MAXQ2000-RBX is sourced from the original manufacturer or authorized distributors?
All MAXQ2000-RBX 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 MAXQ2000-RBX meets industry standards.
7.What is the process for return or replacement of MAXQ2000-RBX?
All MAXQ2000-RBX units undergo pre-shipment inspection (PSI). If there is an issue with MAXQ2000-RBX, 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 MAXQ2000-RBX part is unused and in its original packaging.
Return procedure for MAXQ2000-RBX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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