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Analog Devices Inc./Maxim Integrated ZLR323X2832OR55J8
- Part No.:
- ZLR323X2832OR55J8
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- Die
- Datasheet:
-
ZLR323X2832OR55J8.pdf
- Description:
- MicrocontrolleCMOS
- Quantity:
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Product details
Overview
ZLR323X2832OR55J8 from Maxim Integrated is an 8-bit ROM-based microcontroller optimized for infrared remote control systems, featuring 32 KB program memory, 237 B general-purpose RAM, and dual counter/timers (8-bit + 16-bit) with programmable input glitch filtering and edge detection. It operates from 2.0 V to 3.6 V and supports STOP mode with 1.4 µA typical current draw - deployed in battery-powered IR remotes requiring low-power pulse generation and demodulation.
For engineers reviewing the ZLR323X2832OR55J8 datasheet, ZLR323X2832OR55J8 pinout, ZLR323X2832OR55J8 application, or ZLR323X2832OR55J8 equivalent, key selection criteria include its Crimzon®-optimized IR timing architecture, mask-selectable internal pull-ups on Ports 0–3, dual comparator inputs (P31/P32) with independent reference pins (Pref1/P33), and 28-pin SOIC/SSOP packaging with verified port mapping for P0–P3 and XTAL1/XTAL2.
Technical Context
The ZLR323X2832OR55J8 implements a Z8®-core architecture with Expanded Register File (ERF) enabling direct access to peripheral registers (CTR0–CTR3, TC8L/TC8H, TC16L/TC16H) via RP register banking. Its intelligent timer subsystem integrates dedicated capture/load registers, 1-, 2-, 4-, and 8-bit clock dividers, and glitch-filtered input paths for precise IR carrier handling.
It features two analog comparators (Comp1/Comp2) tied to P31/P32 with reference inputs Pref1 and P33, programmable IRQ polarity, and digital/analog mode switching via P3M register bit D1. Port 3 provides fixed I/O: P31–P33 as inputs (analog/digital selectable), P34–P37 as push-pull outputs mapped to T8, T16, T8/T16, and AO2 functions respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Z8® 8-bit CPU with Expanded Register File (ERF) supporting banked access to CTR0–CTR3 and timer registers |
| Program Memory | 32 KB ROM - sufficient for full IR protocol stacks (NEC, RC-5, Sony) plus application logic without external storage |
| RAM | 237 B general-purpose RAM - accommodates IR frame buffers, state variables, and interrupt context storage |
| Supply Voltage | 2.0 V to 3.6 V - enables direct operation from single-cell Li-ion or alkaline batteries without LDO regulation |
| Low-Power Modes | STOP mode draws 1.4 µA typical - extends battery life in remote controls during idle periods between button presses |
| Timer System | Dual independent timers: 8-bit (T8) with two capture/load registers + 16-bit (T16) with one 16-bit capture/load pair - supports precise carrier generation (38 kHz) and pulse-width measurement |
| Comparator Inputs | Two on-chip comparators (P31/P32) with separate reference inputs (Pref1/P33) - enable analog signal conditioning for ambient light rejection or voltage monitoring |
Pinout & Package
Package: 28-pin SOIC/SSOP (standard JEDEC MS-012 / MO-153). Pin count and layout match documented 28-pin PDIP/SOIC/SSOP configuration per Figure 4 and Table 4 of PS022613-0409.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P07 | Port 0 bidirectional I/O (nibble-configurable) | Software-selectable push-pull or open-drain; mask-selectable internal pull-ups - used for keypad scanning and LED drive |
| P20–P27 | Port 2 bidirectional I/O | Eight independent CMOS I/O lines; P20 supports edge-detection for Stop Mode Recovery wake-up |
| P31–P33 | Port 3 input-only pins | P31/P32 serve as comparator inputs (AN1/AN2); P33 is comparator reference (REF2) - all support SMR source in DIGITAL mode |
| P34–P37 | Port 3 output-only pins | P34 = T8 output; P35 = T16 output; P36 = T8/T16 shared output; P37 = AO2 comparator output - enable direct IR LED drive or analog signal routing |
| XTAL1 / XTAL2 | Crytal oscillator input/output | Supports parallel-resonant crystal (e.g., 455 kHz, 1 MHz) or ceramic resonator - defines system clock and IR carrier timing base |
| RESET | Active-low reset input | Internally pulled up; accepts external open-drain reset - initiates POR, WDT, or LVD recovery but does not exit STOP mode |
| VDD / VSS | Power supply and ground | VDD (pins 8, 12, 13) and VSS (pin 22) provide decoupling points - multi-pin VDD improves noise immunity in IR RF environments |
Key Features
| Feature | Design Value |
|---|---|
| IR-Optimized Timer Architecture | Dual counter/timers with dedicated capture/load registers, programmable clock dividers (1/2/4/8), and input glitch filtering - eliminates software overhead for carrier generation and pulse decoding |
| Mask-Selectable Pull-Up Transistors | Per-nibble pull-ups on Ports 0–3 configurable at mask level - reduces external BOM count in keypad interface designs without sacrificing flexibility |
| Integrated Analog Comparators | Two independent comparators with separate reference inputs (Pref1, P33) and programmable IRQ polarity - enables ambient light compensation and battery voltage monitoring without external components |
| Low-Voltage Detection (LVD) | Detects supply drop below programmable threshold and triggers interrupt - prevents erratic IR transmission during battery depletion |
| Stop Mode Recovery (SMR) | Wakes from 1.4 µA STOP mode via P20 edge detection or external interrupt - achieves sub-µA average current in intermittent-use remote applications |
Applications
| Universal Remote Control | Smart Home IR Hub |
|---|---|
|
Use Scenario: A handheld universal remote controlling TVs, set-top boxes, and audio receivers across multiple protocols (NEC, RC-5, Sony). IC Role / Device Role / Timing Role: ZLR323X2832OR55J8 serves as the primary IR protocol engine - generating precise 38 kHz carriers, measuring pulse widths, and managing protocol state machines. Use Value: On-chip 32 KB ROM stores multiple protocol libraries; dual timers enable simultaneous carrier synthesis and timing-critical pulse capture - eliminating need for external timing ICs. |
Use Scenario: A wall-mounted IR hub that receives commands from smartphone apps and retransmits them via IR blasters to legacy AV equipment. IC Role / Device Role / Timing Role: ZLR323X2832OR55J8 acts as the IR waveform generator and modulator - converting UART-received command data into correctly timed IR bursts. Use Value: Mask-selectable pull-ups simplify keypad integration for local control; STOP mode with P20 wake-up enables ultra-low-power listening for BLE/Wi-Fi trigger events. |
| Wireless Presentation Remote | Industrial IR Sensor Interface |
|
Use Scenario: A presenter remote combining IR transmission with 2.4 GHz RF for PC control, requiring reliable IR burst generation during battery-limited operation. IC Role / Device Role / Timing Role: ZLR323X2832OR55J8 handles time-critical IR modulation while RF MCU manages higher-layer communication - offloading timing-sensitive tasks. Use Value: 2.0–3.6 V operation allows direct use of coin-cell battery; 1.4 µA STOP current extends shelf life - critical for infrequently used presentation tools. |
Use Scenario: An industrial control panel using IR for non-contact status indication or safety interlock signaling in EMI-heavy factory environments. IC Role / Device Role / Timing Role: ZLR323X2832OR55J8 functions as a deterministic IR pulse sequencer - driving high-current IR LEDs via P34–P37 with precise duty-cycle control. Use Value: Dual comparators monitor supply rail and ambient light; LVD interrupt prevents false triggering during brownout - ensuring fail-safe operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar infrared microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZLR16300 | 16 KB ROM, same Z8® core, identical 28-pin package and pinout, but lacks 16-bit timer and second comparator | Suitable for simpler IR protocols with shorter frame lengths; insufficient ROM for multi-protocol universal remotes | Select when cost sensitivity outweighs need for extended protocol support or dual-comparator analog monitoring |
| MAXQ2010 | 16-bit RISC core, 32 KB flash, integrated USB, no dedicated IR timer hardware - requires firmware-based carrier generation | Better for mixed-signal applications needing USB connectivity; higher power consumption invalidates ultra-low-power STOP use cases | Choose only if system requires USB host/device capability and can tolerate increased firmware complexity and ~10× higher STOP current |
Compared with ZLR16300, ZLR323X2832OR55J8 delivers 2× ROM capacity and added 16-bit timer functionality essential for advanced IR protocols; versus MAXQ2010, it offers deterministic hardware-accelerated IR timing and 10× lower STOP-mode current - making it superior for battery-critical remote control designs.
Availability
ZLR323X2832OR55J8 is available at Aetrix Electronics and suitable for universal remote controls, smart home IR hubs, wireless presentation remotes, and industrial IR sensor interfaces requiring stable component supply, long-term lifecycle support, and consistent mask-programmed ROM content.
Supply support for ZLR323X2832OR55J8 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, automotive, communications, and consumer markets.
ZLR323X2832OR55J8 belongs to the Crimzon® family of infrared-optimized microcontrollers - engineered specifically for low-power, high-accuracy IR remote control applications with integrated timing, comparator, and power management peripherals.
FAQ
What is the ROM size and programming method for ZLR323X2832OR55J8?
ZLR323X2832OR55J8 contains 32 KB of mask-programmed ROM. The firmware is permanently embedded during wafer fabrication - no field reprogramming is possible. This ensures deterministic timing, immunity to corruption, and suitability for high-volume remote control production where code stability is critical. The ROM includes interrupt vectors, protocol stacks, and application logic pre-verified for IR compliance.
Does ZLR323X2832OR55J8 support crystal oscillators or external clocks?
ZLR323X2832OR55J8 supports both parallel-resonant crystals and ceramic resonators connected between XTAL1 (input) and XTAL2 (output). It also accepts an external single-phase clock applied to XTAL1, bypassing the internal oscillator circuit. The device's timing accuracy and IR carrier stability depend directly on the selected crystal/resonator frequency and load capacitance matching per PS022613-0409 specifications.
How does the Stop Mode Recovery (SMR) function work on ZLR323X2832OR55J8?
ZLR323X2832OR55J8 exits STOP mode via edge detection on P20 or external interrupts (IRQ0–IRQ2). Upon wake-up, the device restores register states (except those marked non-resettable in ERF maps) and resumes execution from the instruction following the STOP instruction. SMR preserves RAM contents and enables ultra-low-power operation - critical for battery life in IR remotes with infrequent user interaction.
Can ZLR323X2832OR55J8 drive IR LEDs directly, and what are the output limitations?
ZLR323X2832OR55J8 drives IR LEDs directly through P34–P37, which are push-pull outputs rated for 20 mA sink/source per pin (per DC characteristics table). For higher-current applications, external MOSFET drivers are recommended. Output timing is hardware-controlled by T8/T16 modules - ensuring jitter-free 38 kHz carrier generation without CPU intervention.
What are the key differences between ZLR323X2832OR55J8 and ZLR16300?
ZLR323X2832OR55J8 provides 32 KB ROM (vs. 16 KB), adds a dedicated 16-bit counter/timer with 16-bit capture/load registers, and includes a second analog comparator with independent reference input. Both share identical 28-pin SOIC/SSOP packaging and core Z8® architecture - but ZLR323X2832OR55J8 supports more complex IR protocols and dual-sensor analog monitoring scenarios.
ZLR323X2832OR55J8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- Die
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- Z8
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- Infrared, HLVD, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- ROM
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- External, Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ZLR323X2832OR55J8 FAQ
1.How can I place an order for ZLR323X2832OR55J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZLR323X2832OR55J8 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 ZLR323X2832OR55J8 reliable?
The price and inventory of ZLR323X2832OR55J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZLR323X2832OR55J8 is usually 5 days.
3.What payment methods are accepted for ZLR323X2832OR55J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZLR323X2832OR55J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZLR323X2832OR55J8?
ZLR323X2832OR55J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZLR323X2832OR55J8 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 ZLR323X2832OR55J8?
For technical support, including ZLR323X2832OR55J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZLR323X2832OR55J8 requirements.
6.How does Aetrix verify that ZLR323X2832OR55J8 is sourced from the original manufacturer or authorized distributors?
All ZLR323X2832OR55J8 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 ZLR323X2832OR55J8 meets industry standards.
7.What is the process for return or replacement of ZLR323X2832OR55J8?
All ZLR323X2832OR55J8 units undergo pre-shipment inspection (PSI). If there is an issue with ZLR323X2832OR55J8, 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 ZLR323X2832OR55J8 part is unused and in its original packaging.
Return procedure for ZLR323X2832OR55J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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