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Analog Devices Inc./Maxim Integrated MAXQ2000-QBX
- Part No.:
- MAXQ2000-QBX
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAXQ2000-QBX.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,366
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Product details
Overview
The MAXQ2000-QBX from Maxim Integrated is a low-power, 16-bit RISC microcontroller with integrated 100/132-segment LCD driver, 32kWords flash, 1kWord RAM, dual 1.8V core/3V I/O supply, and real-time clock - designed for battery-powered medical instrumentation including blood-glucose monitors.
For engineers reviewing the MAXQ2000-QBX datasheet, MAXQ2000-QBX pinout, MAXQ2000-QBX application, or MAXQ2000-QBX equivalent, key selection criteria include LCD segment count (100 or 132), ultra-low sleep current (700nA), dual-voltage domain operation, and JTAG/UART in-system programming support.
Technical Context
The MAXQ2000-QBX implements a transport-triggered, accumulator-based 16-bit RISC architecture with single-cycle instruction execution, 16-level hardware stack, and three auto-incrementing data pointers - enabling high C-compiler efficiency and fast data movement. It supports DC–20MHz operation (at VDD > 2.25V) with up to 1 MIPS per MHz performance.
Its integrated LCD controller supports static, 1/2, and 1/3 bias modes without external resistors, drives up to 4 COM and 36 SEG lines, and uses dedicated VLCD/VLCD1/VLCD2/VADJ pins for precise contrast and voltage control. The device includes two UARTs, SPI, 1-Wire (on -RAX/-RFX variants), three 16-bit timers, and a 32-bit binary RTC with time-of-day alarm.
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 peak performance |
| Memory | 32kWords flash (10,000 write/erase cycles), 1kWord SRAM, 4kB utility ROM |
| LCD Support | 100 or 132 segments; static/1/2/1/3 bias; no external resistors required |
| Power Modes | 700nA stop mode; 190µA active at 8MHz/2.2V; PMM1/PMM2 low-power modes |
| I/O Supply | Dual-domain: 1.8V core / 2.7–3.6V I/O - enables low-power logic with robust interface voltage |
| RTC & Timers | 32-bit binary RTC with time-of-day alarm; three 16-bit programmable timers; 8-bit subsecond timer |
Pinout & Package
MAXQ2000-QBX is available in 68-pin QFN (10mm × 10mm, 0.5mm pitch) and 100-pin LQFP (14mm × 14mm, 0.5mm pitch) packages. Pin functions are configurable per port (P0–P7), with shared LCD segment/com/alternate peripheral roles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital core supply | 1.8V nominal; powers CPU, flash, RAM, and internal logic |
| VDDIO | I/O supply rail | 2.7–3.6V; powers GPIO, UART, SPI, LCD segment drivers, and level-shifted interfaces |
| VLCD, VLCD1, VLCD2, VADJ | LCD bias control network | Enable precise contrast tuning and bias configuration (static/1/2/1/3) without external resistors |
| P0.0–P0.7, P1.0–P1.7, P2.0–P2.7, P3.0–P3.7, P6.4–P6.5, P7.0–P7.1 | Configurable segment drivers | Up to 132 total segments; function as GPIO when LCD disabled via PCF bits |
| HFXIN/HFXOUT, 32KIN/32KOUT | Crystal oscillator inputs/outputs | Support 3–20MHz HF crystal and 32.768kHz watch crystal for system and RTC clocks |
| P4.0–P4.3 | JTAG debug interface | TCK/TDI/TMS/TDO; enables in-circuit debugging and flash programming without boot loader |
| P5.2–P5.7 | SPI master/slave interface | MOSI/MISO/SCLK/SS; operates up to fCK/2 (master) or fCK/8 (slave) |
| P7.0/TX0, P7.1/RX0 | UART0 transceiver | Full-duplex asynchronous serial; supports standard baud rates and framing |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit RISC Core | Single-cycle execution, 33 instructions, optimized for C-compiler density and speed |
| Dual-Voltage I/O | Independent 1.8V core and 2.7–3.6V I/O rails enable low-power operation with 3V sensor/peripheral interfacing |
| Integrated LCD Controller | Drives 100 or 132 segments with programmable bias (static/1/2/1/3); eliminates external bias resistors and reduces BOM cost |
| In-System Programming | JTAG and UART boot loader support field firmware updates and eliminate need for external programmers |
| Ultra-Low-Power Stop Mode | 700nA typical current draw preserves battery life in portable medical devices during extended idle periods |
| Real-Time Clock | 32-bit binary RTC with time-of-day alarm and subsecond timer - enables accurate timestamping and scheduled wake-up |
Applications
| Blood-Glucose Monitoring | Portable Electrochemical Sensors |
|---|---|
Use Scenario: Handheld glucose meter with LCD display, test-strip interface, and battery operation. IC Role / Device Role / Timing Role: Primary controller managing strip detection, analog front-end sequencing, LCD update, RTC-stamped result storage, and low-power sleep/wake cycles. Use Value: Integrated 132-segment LCD driver and 700nA stop mode extend battery life beyond 1 year on coin-cell power while supporting clear multi-field display. | Use Scenario: Battery-powered handheld CO or O₂ detector with segmented LCD readout and audible alarm. IC Role / Device Role / Timing Role: Signal acquisition controller coordinating ADC sampling, sensor calibration, LCD refresh, and real-time alarm triggering based on threshold crossing. Use Value: Dual 1.8V/3V supplies allow direct connection to 3V electrochemical sensors while minimizing core power; RTC enables logging with timestamps. |
| Smart Thermostats | Industrial Data Loggers |
Use Scenario: Wall-mounted HVAC controller with 4-digit LCD, temperature/humidity sensing, and wireless reporting. IC Role / Device Role / Timing Role: System-on-chip managing environmental sensing, LCD UI rendering, button input, RTC-based scheduling, and low-duty-cycle RF wake-up. Use Value: 100-segment LCD support enables custom icons and multi-parameter display; PMM2 mode (0.1–0.95mA) balances responsiveness and battery longevity. | Use Scenario: Field-deployed environmental logger recording temperature, humidity, and pressure every 15 minutes for 6 months. IC Role / Device Role / Timing Role: Autonomous data acquisition node executing timed measurements, storing results in flash, updating LCD status, and entering deep sleep between samples. Use Value: 32kWords flash stores >100,000 timestamped readings; 10,000 erase cycles ensure reliable long-term logging; 700nA stop mode minimizes self-discharge. |
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 MAXQ2000 core; adds 1-Wire interface and enhanced SPI timing; identical LCD, memory, and power specs | Required where 1-Wire sensor integration (e.g., DS18B20) is needed alongside LCD display | Select MAXQ2010-RAX+ only if 1-Wire peripheral connectivity is mandatory; otherwise MAXQ2000-QBX offers lower cost and same core functionality. |
| RL78/L12 | 16-bit RL78 core; 32kB flash, 4kB RAM; 128-segment LCD; 240nA stop mode; no integrated RTC alarm register | Preferred for higher RAM needs and deeper sleep, but requires external RTC or software alarm management | Choose RL78/L12 for ultra-low-power (<250nA) applications with larger RAM requirements; MAXQ2000-QBX retains advantage in integrated RTC alarm and JTAG debug simplicity. |
Compared with MAXQ2010-RAX+, MAXQ2000-QBX lacks 1-Wire but offers identical LCD, timing, and debug capabilities at lower unit cost; versus RL78/L12, it provides hardware RTC alarm and simpler toolchain integration despite slightly higher stop-current.
Availability
MAXQ2000-QBX is available at Aetrix Electronics and suitable for blood-glucose monitoring, portable electrochemical sensors, and smart thermostats requiring stable component supply across medical, industrial, and consumer design cycles.
Supply support for MAXQ2000-QBX 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 embedded processing solutions for demanding industrial, medical, and automotive applications.
The MAXQ2000 product line delivers ultra-low-power 16-bit microcontrollers with integrated LCD controllers specifically for portable, battery-operated medical and sensor instrumentation requiring long service life and high display fidelity.
FAQ
What is the maximum operating frequency of the MAXQ2000-QBX and what supply voltage is required?
The MAXQ2000-QBX operates up to 20MHz when VDD exceeds 2.25V; at VDD ≤ 2.25V, the maximum frequency is 14MHz. This voltage-dependent clock scaling ensures reliable operation across battery discharge profiles. The MAXQ2000-QBX maintains full functionality-including LCD driving and UART communication-at both frequencies, with performance linearly scaling per MHz.
Does the MAXQ2000-QBX support both 100-segment and 132-segment LCD configurations?
Yes, the MAXQ2000-QBX supports both configurations: 100 segments (with -RBX/-RBX+ variants) and 132 segments (with -RAX/-RAX+/-RFX/-RFX+ variants). The MAXQ2000-QBX is a -RBX variant, confirmed by its ordering suffix and datasheet specification for 100-segment operation using up to 4 COM and 36 SEG lines with static or fractional bias.
How does the dual-supply architecture (VDD and VDDIO) benefit system design with the MAXQ2000-QBX?
The MAXQ2000-QBX separates core logic (1.8V VDD) from I/O peripherals (2.7–3.6V VDDIO), allowing independent optimization: low-core voltage minimizes dynamic power, while higher I/O voltage ensures noise immunity and compatibility with 3V sensors, displays, and communication ICs. This architecture eliminates level shifters in mixed-voltage systems and is fully leveraged in the MAXQ2000-QBX's power-constrained medical designs.
What programming interfaces are supported by the MAXQ2000-QBX for firmware development and field updates?
The MAXQ2000-QBX supports JTAG for full-speed in-circuit debugging and flash programming, plus UART-based boot loading for field firmware updates without additional hardware. Both interfaces are enabled by the on-chip utility ROM and require no external programmer. The MAXQ2000-QBX also supports in-application programming of flash memory, enabling secure over-the-air updates in deployed devices.
What is the lowest power consumption mode of the MAXQ2000-QBX and how is it entered?
The MAXQ2000-QBX achieves 700nA typical current in Stop mode, entered via software-controlled STOP instruction with all clocks gated and RAM retention maintained. This mode is ideal for extended battery life in intermittent-use devices like glucose meters. The MAXQ2000-QBX wakes via external interrupt, RTC alarm, or watchdog timeout - all configurable without exiting Stop mode, preserving state and minimizing wake latency.
MAXQ2000-QBX 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-QBX FAQ
1.How can I place an order for MAXQ2000-QBX through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXQ2000-QBX 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-QBX reliable?
The price and inventory of MAXQ2000-QBX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXQ2000-QBX is usually 5 days.
3.What payment methods are accepted for MAXQ2000-QBX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXQ2000-QBX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXQ2000-QBX?
MAXQ2000-QBX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXQ2000-QBX 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-QBX?
For technical support, including MAXQ2000-QBX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXQ2000-QBX requirements.
6.How does Aetrix verify that MAXQ2000-QBX is sourced from the original manufacturer or authorized distributors?
All MAXQ2000-QBX 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-QBX meets industry standards.
7.What is the process for return or replacement of MAXQ2000-QBX?
All MAXQ2000-QBX units undergo pre-shipment inspection (PSI). If there is an issue with MAXQ2000-QBX, 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-QBX part is unused and in its original packaging.
Return procedure for MAXQ2000-QBX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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