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Analog Devices Inc./Maxim Integrated MAXQ2000-RAX+
- Part No.:
- MAXQ2000-RAX+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
MAXQ2000-RAX+.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,164
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Product details
Overview
MAXQ2000-RAX+ from Maxim Integrated is a low-power, 16-bit RISC microcontroller with integrated 132-segment LCD driver, 32kWords flash, 1kWord RAM, dual UARTs, SPI, 1-Wire interface, and real-time clock. It operates up to 20MHz at VDD > 2.25V and draws just 190µA at 8MHz (PMM1 mode), making it ideal for battery-powered blood-glucose meters and portable medical devices.
For engineers reviewing the MAXQ2000-RAX+ datasheet, MAXQ2000-RAX+ pinout, MAXQ2000-RAX+ application, or MAXQ2000-RAX+ equivalent, key selection factors include its 132-segment LCD drive capability, dual 1.8V core/3V I/O supply architecture, ultra-low 700nA stop-mode current, and integrated hardware multiply-accumulate unit supporting electrochemical sensor signal processing.
Technical Context
The MAXQ2000-RAX+ implements a transport-triggered, accumulator-based 16-bit RISC core with single-cycle instruction execution and a 16-level hardware stack. Its memory architecture supports Harvard, pseudo-Von Neumann, and mixed mapping modes, enabling dynamic code execution from data space and in-application flash programming.
It integrates a dedicated LCD controller supporting static, 1/2, and 1/3 bias with no external resistors required, plus dual UARTs (one always present, second enabled on -RAX+ variants), SPI master/slave, and 1-Wire interface - all accessible via shared port pins under software-configurable function control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC, transport-triggered, single-cycle execution, 16-level hardware stack |
| Max Clock Frequency | 20MHz at VDD > 2.25V; enables ~20 MIPS performance for real-time sensor processing |
| Memory | 32kWords flash (10,000 write/erase cycles), 1kWord SRAM, 4kB utility ROM with bootloader |
| LCD Drive Capability | 132 segments with 4 COM lines; supports static, 1/2, 1/3 bias; no external bias resistors needed |
| Low-Power Modes | 700nA stop mode; 190µA active at 8MHz (PMM1); 32kHz RTC with time-of-day alarm |
| Peripherals | Dual UARTs, SPI, 1-Wire, three 16-bit timers, hardware 16×16 MAC with 48-bit accumulator |
| I/O Supply | Dual supply: 1.8V core (VDD), 2.7–3.6V I/O (VDDIO) for flexible interfacing with sensors and displays |
Pinout & Package
MAXQ2000-RAX+ is available in 68-pin QFN (10mm × 10mm, 0.5mm pitch) and 100-pin LQFP (14mm × 14mm, 0.5mm pitch) packages. Both feature exposed thermal pad (EP) and identical pin functions across package variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital core supply | 1.8V nominal; powers CPU, flash, RAM, and internal logic; separate from I/O rail |
| VDDIO | I/O supply voltage | 2.7–3.6V; sets logic thresholds for GPIO, UART, SPI, and LCD segment drivers |
| VLCD / VLCD1 / VLCD2 / VADJ | LCD bias control network | Configures LCD contrast and drive voltage for static/1/2/1/3 bias; enables resistor-free operation |
| P0–P7 ports (e.g., P0.0–P0.7, P1.0–P1.7, etc.) | Multiplexed I/O + LCD segment/com outputs | Software-selectable between general-purpose digital I/O and LCD segment/common drive; conflict management required when mixing LCD/interrupt |
| HFXIN / HFXOUT | High-frequency clock input/output | Supports 3–20MHz crystal or external clock; determines system clock (fCK) up to 20MHz |
| 32KIN / 32KOUT | Real-time clock oscillator interface | Connects 32.768kHz watch crystal; feeds RTC, alarm, and low-power timing subsystems |
| P5.4–P5.7 | SPI interface signals | SS, MOSI, SCLK, MISO - fully functional SPI master/slave per datasheet timing specs |
| P6.2 / P6.3 | 1-Wire interface | OW_OUT and OW_IN pins; support Dallas 1-Wire protocol for temperature/sensor communication |
Key Features
| Feature | Design Value |
|---|---|
| 132-segment LCD driver | Eliminates external LCD bias circuitry and reduces BOM count in portable medical displays |
| Dual 1.8V/3V supply domains | Enables ultra-low-power core operation while maintaining robust 3V-level I/O for sensors and peripherals |
| In-system programming via JTAG | Allows field firmware updates without removing MCU; supports password-protected flash access |
| Hardware 16×16 MAC with 48-bit accumulator | Accelerates fixed-point math for glucose algorithm execution and sensor calibration routines |
| 700nA stop-mode current | Extends battery life in handheld diagnostics by minimizing quiescent draw during sleep intervals |
| Integrated RTC with time-of-day alarm | Provides timestamping and scheduled wake-up without external real-time clock IC |
Applications
| Blood-Glucose Monitoring | Portable Electrochemical Sensors |
|---|---|
Use Scenario: Handheld glucometer with LCD display, test-strip interface, and battery operation. IC Role / Device Role / Timing Role: Primary controller managing strip insertion detection, analog front-end sampling, LCD update, button input, and RTC-stamped result storage. Use Value: Integrated 132-segment LCD driver eliminates external bias IC; 700nA stop mode extends AA battery life beyond 12 months. | Use Scenario: Battery-powered CO or NO₂ detector using amperometric sensor and alphanumeric display. IC Role / Device Role / Timing Role: Signal processor executing calibration algorithms, driving LCD, managing low-power wake cycles, and communicating via UART to host. Use Value: Hardware MAC accelerates sensor compensation math; dual UARTs enable simultaneous debug output and sensor module communication. |
| Smart Thermostats | Industrial Data Loggers |
Use Scenario: Wall-mounted HVAC controller with segmented LCD, temperature/humidity sensing, and local UI. IC Role / Device Role / Timing Role: Main MCU handling environmental sensor reads, display refresh, keypad scan, and real-time scheduling. Use Value: 32kHz RTC with time-of-day alarm enables precise heating/cooling schedule execution; 132-segment LCD supports multi-parameter display without external controller. | Use Scenario: Field-deployed environmental logger recording temperature, pressure, and humidity at 10-minute intervals. IC Role / Device Role / Timing Role: Autonomous data acquisition node with flash storage, RTC timestamping, and low-power sleep between samples. Use Value: 32kWords flash stores >10,000 timestamped readings; 190µA active current at 8MHz enables multi-year operation on lithium primary cells. |
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+ | Same core, 64kWords flash, 2kWords RAM, identical peripherals and pinout | Better suited for applications requiring larger firmware or extended data logging buffers | Select when firmware size exceeds 32kWords or RAM usage exceeds 1kWord |
| RL78/L12 | 16-bit RL78 core, 32kB flash, 4kB RAM, 128-segment LCD, but no 1-Wire or hardware MAC | Lacks integrated 1-Wire and fixed-point MAC; requires external components for equivalent sensor math throughput | Choose for cost-sensitive industrial displays where 1-Wire and MAC are not required |
Compared with MAXQ2000-RAX+, MAXQ2010-RAX+ offers double flash/RAM for complex algorithms without layout change, while RL78/L12 provides higher LCD segment count but requires external signal conditioning for electrochemical sensor interfaces.
Availability
MAXQ2000-RAX+ is available at Aetrix Electronics and suitable for blood-glucose monitoring systems, portable electrochemical sensors, and smart thermostat designs requiring stable component supply and long-term lifecycle support.
Supply support for MAXQ2000-RAX+ 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-RAX+ belongs to the MAXQ family of ultra-low-power, LCD-optimized microcontrollers engineered specifically for portable medical instrumentation and battery-constrained human-interface applications.
FAQ
What is the maximum operating frequency of the MAXQ2000-RAX+ and what supply voltage is required?
The MAXQ2000-RAX+ operates at up to 20MHz when VDD exceeds 2.25V; at VDD ≤ 2.25V, the maximum frequency is limited to 14MHz. This voltage-dependent clock scaling ensures reliable operation across battery discharge profiles. The MAXQ2000-RAX+ uses separate 1.8V core and 2.7–3.6V I/O supplies, allowing high-speed logic while maintaining robust interface levels.
Does the MAXQ2000-RAX+ support in-application programming of its flash memory?
Yes, the MAXQ2000-RAX+ supports in-application programming (IAP) of flash memory via its utility ROM bootloader. This allows firmware updates without halting main application execution. The MAXQ2000-RAX+ includes password protection (16-word key) to prevent unauthorized access to flash contents during IAP or JTAG programming sessions.
How many LCD segments can the MAXQ2000-RAX+ drive, and what bias configurations are supported?
The MAXQ2000-RAX+ drives up to 132 segments with 4 common lines and supports static, 1/2, and 1/3 bias configurations. It requires no external bias resistors due to integrated voltage dividers at VLCD1/VLCD2/VADJ pins. The MAXQ2000-RAX+ achieves this using shared port pins (P0–P7), with software-controlled function selection between GPIO and LCD drive modes.
What communication interfaces are integrated into the MAXQ2000-RAX+?
The MAXQ2000-RAX+ integrates two UARTs (one standard, one enabled on -RAX+ variants), full-duplex SPI master/slave, and 1-Wire interface on dedicated pins (P6.2/P6.3). All interfaces operate concurrently and share no critical resources. The MAXQ2000-RAX+ also supports JTAG for debugging and programming, with pin multiplexing managed entirely in software.
What is the lowest power consumption mode of the MAXQ2000-RAX+, and what features remain active?
The MAXQ2000-RAX+ achieves 700nA typical current in Stop mode, where the CPU, flash, RAM, and most peripherals are disabled. The 32kHz RTC remains active and can generate wake-up interrupts. The MAXQ2000-RAX+ retains register and RAM contents in this mode, enabling rapid resumption of operation upon wake event - critical for battery longevity in intermittent-sensing applications.
MAXQ2000-RAX+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 68-VFQFN Exposed Pad
- Series:
- MAXQ®
- Packaging:
- Bulk
- Product Status:
- Active
- 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-RAX+ FAQ
1.How can I place an order for MAXQ2000-RAX+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXQ2000-RAX+ 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-RAX+ reliable?
The price and inventory of MAXQ2000-RAX+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXQ2000-RAX+ is usually 5 days.
3.What payment methods are accepted for MAXQ2000-RAX+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXQ2000-RAX+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXQ2000-RAX+?
MAXQ2000-RAX+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXQ2000-RAX+ 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-RAX+?
For technical support, including MAXQ2000-RAX+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXQ2000-RAX+ requirements.
6.How does Aetrix verify that MAXQ2000-RAX+ is sourced from the original manufacturer or authorized distributors?
All MAXQ2000-RAX+ 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-RAX+ meets industry standards.
7.What is the process for return or replacement of MAXQ2000-RAX+?
All MAXQ2000-RAX+ units undergo pre-shipment inspection (PSI). If there is an issue with MAXQ2000-RAX+, 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-RAX+ part is unused and in its original packaging.
Return procedure for MAXQ2000-RAX+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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