Analog Devices Inc./Maxim Integrated MAXQ613A-0000+

Overview

MAXQ613A-0000+ from Maxim Integrated is a 16-bit RISC microcontroller with integrated infrared (IR) transmission and reception capability, designed for ultra-low-power universal remote controls and battery-operated consumer electronics. It features 48KB flash, 1.5KB SRAM, 20 GPIOs in a 32-pin TQFN-EP package, and operates from 1.7V to 3.6V. Its 0.2µA typical stop-mode current and on-chip IR carrier generation enable multi-year battery life in handheld IR remotes.

For engineers reviewing the MAXQ613A-0000+ datasheet, MAXQ613A-0000+ pinout, MAXQ613A-0000+ application, or MAXQ613A-0000+ equivalent, key selection considerations include IR drive strength (25mA sink on IRTX), secure MMU-based IP protection, nanopower wake-up timer (8kHz ring oscillator), and compatibility with standard IR protocols requiring carrier-frequency modulation and burst-count receive decoding.

Technical Context

The MAXQ613A-0000+ implements Maxim's pipelined 16-bit MAXQ20S RISC core with Harvard architecture, executing nearly all instructions in one cycle at up to 12MHz. Its memory subsystem includes 48KB flash organized in 512-byte sectors (20,000 erase/write cycles) and 1.5KB SRAM, protected by a secure MMU supporting multiple privilege levels for code partitioning and anti-tampering.

Integrated peripherals include dual 16-bit timers with prescaler/capture/compare, a USART, SPI master/slave, power-fail detection (VPFW = 1.8V nominal), and dedicated IR hardware: carrier generator (f_IR = f_CK/2), modulator output (IRTXM), independent transmit (IRTX) and receive (IRRX) pins, and burst-count mode for robust IR signal capture.

Key Specifications

Pinout & Package

MAXQ613A-0000+ is housed in a 5mm × 5mm, 32-pin TQFN-EP package with exposed pad (EP) connected to GND. The package supports high-density PCB layout and efficient thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller-with-IR applications.

Compared with MAXQ613J-0000+, the MAXQ613A-0000+ offers identical functionality in a smaller 32-pin footprint ideal for space-constrained remotes; compared with STM32F030F4P6, it delivers turnkey IR support with lower BOM count and guaranteed protocol timing accuracy.

Availability

MAXQ613A-0000+ is available at Aetrix Electronics and suitable for universal remote controls, battery-powered consumer electronics, and home appliance interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAXQ613A-0000+ 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 solutions for power, sensing, connectivity, and security applications.

The MAXQ613 product line targets ultra-low-power infrared control systems, combining a high-efficiency 16-bit RISC core with hardware-accelerated IR transmission, reception, and power management for multi-year battery life.

FAQ

What is the maximum IR carrier frequency supported by MAXQ613A-0000+?

The MAXQ613A-0000+ generates IR carrier frequencies equal to half the system clock frequency (f_IR = f_CK/2). With a maximum system clock of 12MHz, this yields a 6MHz carrier - sufficient for standard consumer IR protocols (e.g., 38kHz, 40kHz, 56kHz) using prescaled timer outputs. The carrier module is fully hardware-controlled and does not consume CPU cycles during transmission.

Does MAXQ613A-0000+ support in-application programming of flash memory?

Yes, MAXQ613A-0000+ supports in-application flash programming via its utility ROM interface. Firmware can reprogram flash sectors (512-byte granularity) while executing from other memory regions, enabling secure over-the-air updates and field calibration. Each sector endures 20,000 erase/write cycles with 100-year data retention at +25°C.

How many interrupt sources does MAXQ613A-0000+ provide, and which pins support them?

MAXQ613A-0000+ provides 16 external interrupt sources (INT0–INT15), mapped across P0.0–P0.7, P1.0–P1.7, and P0.5–P0.7. All 20 GPIOs support interrupt-on-change or level-triggered modes, with priority arbitration handled in hardware. The IRTX and IRRX pins do not serve as interrupt inputs - IR events are captured via dedicated hardware registers.

What is the purpose of the REGOUT pin on MAXQ613A-0000+?

The REGOUT pin on MAXQ613A-0000+ delivers a regulated 1.8V output from the internal LDO, intended solely for powering external circuitry requiring a clean 1.8V rail - such as logic-level shifters or low-voltage sensors. It must be decoupled with a 1.0µF ceramic capacitor to GND and must not drive loads exceeding 10mA to maintain regulation accuracy and stability.

Can MAXQ613A-0000+ operate from a single 1.5V alkaline cell?

No, MAXQ613A-0000+ requires a minimum supply voltage of 1.70V. While a fresh alkaline cell may start near 1.6V, its voltage drops rapidly under load and falls below 1.70V within minutes. For single-cell operation, use lithium primary (e.g., CR2032, nominal 3.0V) or rechargeable Li-ion/LiFePO₄ cells. Two alkaline cells (nominal 3.0V) are recommended for reliable operation across the full temperature range.