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Analog Devices Inc./Maxim Integrated ZLR323S2832GR0641T
- Part No.:
- ZLR323S2832GR0641T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ZLR323S2832GR0641T.pdf
- Description:
- MICROCONTROLLER, CMOS
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ZLR323S2832GR0641T from Maxim Integrated is an 8-bit Crimzon® ROM-based microcontroller optimized for infrared remote control systems, featuring 32 KB ROM, 237 B RAM, 28-pin SOIC package, 2.0–3.6 V operation, and dual counter/timers (8-bit + 16-bit) with IR pulse generation/reception logic. It integrates on-chip comparators, low-voltage detection, and STOP mode consuming 1.4 µA - deployed in battery-powered universal remotes and consumer IR interfaces.
For engineers reviewing the ZLR323S2832GR0641T datasheet, ZLR323S2832GR0641T pinout, ZLR323S2832GR0641T application, or ZLR323S2832GR0641T equivalent, key selection criteria include IR timing accuracy (XTAL1/XTAL2-supported crystal oscillator), port-configurable pull-up transistors on P0–P3, STOP-mode current draw, comparator reference flexibility (Pref1/P33), and mask-programmable ROM variants for OEM firmware locking.
Technical Context
The ZLR323S2832GR0641T implements a Z8®-core architecture with Expanded Register File (ERF) enabling direct access to timer control registers (CTR0–CTR3 in Bank D), comparator configuration (P3M, CTR1), and low-voltage detection (LVD register at D0Ch). Its interrupt system supports six priority levels - three external (P31–P33), two timer-linked, and one LVD-triggered - with edge-detect circuitry routed to P20 or P31 for IR signal demodulation.
Power management includes three standby modes: STOP (1.4 µA), HALT (0.5 mA), and Low-Voltage mode, with POR/WDT-initiated reset and internal pull-up on RESET. The 28-pin SOIC variant maps Port 0 (P00–P07), Port 2 (P20–P27), Port 3 (P30–P37), XTAL1/XTAL2, VDD, and VSS - with P34–P37 dedicated to timer outputs (T8, T16, T8/T16, AO2) and P31/P32 as analog comparator inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Z8® 8-bit CPU with Expanded Register File (ERF) enabling direct peripheral register access without banking overhead |
| ROM / RAM | 32 KB mask-programmed ROM for fixed firmware; 237 B general-purpose RAM for runtime variables and stack |
| Supply Voltage | 2.0–3.6 V - enables direct operation from single-cell Li-ion or alkaline batteries without regulation |
| Timers | One 8-bit counter/timer (T8) with two capture/load registers; one 16-bit counter/timer (T16) with 16-bit capture/load pair - supports precise IR carrier generation and pulse-width measurement |
| Low-Power Modes | STOP mode draws 1.4 µA typical - extends battery life in always-on remote controls during idle periods |
| Comparator Inputs | Two on-chip comparators (Comp1/Comp2) with independent reference inputs (Pref1, P33) - enable analog sensor interfacing or voltage monitoring without external components |
| Package | 28-pin SOIC (Small Outline Integrated Circuit) - industry-standard footprint compatible with automated PCB assembly |
Pinout & Package
28-pin SOIC package with 0.3-inch body width, JEDEC MS-012AC compliant; thermal pad not present; RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P07 | Port 0 bidirectional I/O (nibble-configurable) | Software-selectable push-pull or open-drain; mask-option pull-ups support IR LED drive or button scanning without external resistors |
| P20–P27 | Port 2 bidirectional I/O | Includes P20 edge-detect input for Stop Mode Recovery wake-up; full 8-bit I/O available in 28-pin package |
| P30–P33 | Port 3 input-only pins | P31/P32 serve as comparator inputs (AN1/AN2); P33 provides REF2 reference; Pref1/P30 is analog reference input |
| P34–P37 | Port 3 output-only pins | Dedicated timer outputs: P34=T8, P35=T16, P36=T8/T16, P37=AO2 - enable direct IR carrier modulation without GPIO bit-banging |
| XTAL1 / XTAL2 | Clock oscillator interface | XTAL1 accepts parallel-resonant crystal (e.g., 455 kHz ceramic resonator); XTAL2 delivers buffered clock output for timing-critical IR carrier synthesis |
| RESET | Active-low reset input | Internally pulled up; asserts low during POR/WDT/Stop Mode Recovery - ensures deterministic startup after power loss or brownout |
| VDD / VSS | Power supply terminals | VDD (pin 8) and VSS (pin 22) provide single-supply operation; decoupling capacitor required between VDD–VSS near pin 8 |
Key Features
| Feature | Design Value |
|---|---|
| IR-Optimized Timer Architecture | Dual counter/timers with programmable glitch filter, edge detection, and capture registers - eliminates software overhead for 38 kHz carrier generation and NEC/RC-5 protocol decoding |
| Mask-Selectable Pull-Up Transistors | Per-port nibble-level pull-up options on P0, P1, P2, P3 - reduces BOM count in remote control PCBs by eliminating discrete pull-up resistors |
| Low-Voltage Detection (LVD) | Configurable threshold detection with interrupt flag - prevents erratic operation during battery depletion while enabling graceful shutdown or low-power alert |
| Stop Mode Recovery (SMR) | Wake-up from 1.4 µA STOP mode via P20 edge detect or external IRQ - maintains ultra-low power while retaining responsiveness to user input |
| On-Chip Analog Comparators | Two independent comparators with separate reference inputs (Pref1, P33) - enables battery voltage monitoring or ambient light sensing without external op-amps |
Applications
| Universal Remote Control | Smart Home IR Bridge |
|---|---|
Use Scenario: Battery-powered handheld remote controlling TVs, set-top boxes, and audio receivers using NEC, RC-5, or Sony protocols. IC Role / Device Role / Timing Role: Primary IR protocol encoder/decoder with hardware-accelerated carrier generation (38 kHz) and pulse-width measurement. Use Value: Eliminates need for external IR driver transistor and timing-critical firmware - reduces bill-of-materials and improves RF immunity via on-chip oscillator stability. |
Use Scenario: Compact wall-mounted hub translating Wi-Fi/BLE commands into IR signals for legacy AV equipment. IC Role / Device Role / Timing Role: Standalone IR waveform generator triggered by UART or SPI host processor; uses P34–P37 for direct carrier output. Use Value: Enables zero-latency IR transmission with sub-microsecond timing precision - critical for synchronized multi-device control in home theater setups. |
| IR-Based Appliance Controller | Low-Power Sensor Node |
Use Scenario: Embedded controller in air conditioner or fan remote with temperature sensor feedback and display backlight control. IC Role / Device Role / Timing Role: System-on-chip managing IR communication, analog sensor reading (via P31/P32 comparators), and GPIO-driven LED indicators. Use Value: Integrates comparator-based voltage monitoring (battery level) and IR transmit logic - avoids external ADC and reduces PCB area by >30%. |
Use Scenario: Coin-cell-powered occupancy sensor using IR beam break detection and periodic wireless reporting. IC Role / Device Role / Timing Role: Ultra-low-power wake-up controller using P20 edge detection on IR receiver output; executes minimal firmware before sleep. Use Value: Achieves multi-year battery life via 1.4 µA STOP mode and hardware-assisted wake-up - no software polling required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar infrared microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZLR323S2032GR0641T | 20-pin SOIC package; fewer I/O lines (16 total vs. 24), no Port 1 availability, reduced pin count limits peripheral expansion | Suitable for space-constrained remotes with minimal button count and no analog sensing requirements | Select when board real estate is critical and IR functionality is limited to basic encode/decode without comparator use |
| ZLR323S4832GR0641T | 48-pin SSOP package; adds Port 1 (P10–P17), NC pins, and additional VDD/VSS pairs - supports higher I/O density and improved power integrity | Required for complex remotes with LCD drivers, multi-channel IR emitters, or integrated touch sensing | Choose when design requires >24 I/O, analog comparator routing flexibility, or enhanced noise immunity via dual power/ground planes |
Compared with ZLR323S2032GR0641T, ZLR323S2832GR0641T provides 8 additional I/O pins and full Port 1 access, enabling richer peripheral integration; versus ZLR323S4832GR0641T, it offers identical core functionality at lower cost and smaller footprint - optimal for mid-tier universal remotes balancing features and manufacturability.
Availability
ZLR323S2832GR0641T is available at Aetrix Electronics and suitable for universal remote controls, smart home IR bridges, appliance controllers, and low-power sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for ZLR323S2832GR0641T 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, and consumer applications.
The Crimzon® ZLR32300 product line was engineered specifically for infrared remote control systems - integrating ROM-based firmware, IR-optimized timers, low-voltage operation, and ultra-low-power standby modes to replace discrete logic and reduce system cost.
FAQ
What is the maximum crystal frequency supported by ZLR323S2832GR0641T?
ZLR323S2832GR0641T supports parallel-resonant crystals up to 1 MHz, with typical IR applications using 455 kHz ceramic resonators on XTAL1/XTAL2. The oscillator circuit is optimized for stability at these frequencies, and higher frequencies may degrade timing accuracy or increase power consumption beyond specification limits.
Does ZLR323S2832GR0641T support in-circuit programming after soldering?
No, ZLR323S2832GR0641T uses mask-programmed ROM - firmware is permanently embedded during wafer fabrication and cannot be reprogrammed in-system. Development requires pre-programmed samples or EPROM-based Z8 variants; field updates are not possible.
How does the STOP mode recovery work on ZLR323S2832GR0641T?
ZLR323S2832GR0641T exits STOP mode via edge detection on P20 or external interrupt on P31–P33. Upon wake-up, the device restores register state (except SMR-related bits), resumes execution from the instruction following the STOP instruction, and clears the SMR flag - enabling rapid response to IR receiver output transitions.
Can P31 and P32 be used simultaneously as comparator inputs and interrupt sources on ZLR323S2832GR0641T?
Yes, P31 and P32 serve dual roles: as analog comparator inputs (AN1/AN2) referenced to Pref1 and P33, and as configurable edge-triggered interrupt sources (IRQ2/IRQ0). Their interrupt polarity (rising/falling/both) is set via IRQ register bits 6 and 7 - allowing simultaneous analog monitoring and event-driven wake-up.
What is the function of the Pref1/P30 pin on ZLR323S2832GR0641T?
Pref1/P30 on ZLR323S2832GR0641T serves as the reference voltage input (Pref1) for Comparator 1. When not used, it must be tied to VCC per datasheet guidance. It is not a general-purpose I/O pin - its sole defined function is analog reference provisioning for precise voltage comparison in battery monitoring or sensor applications.
ZLR323S2832GR0641T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- Crimzon™ ZLR
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- 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:
ZLR323S2832GR0641T FAQ
1.How can I place an order for ZLR323S2832GR0641T through Aetrix?
Please submit a Request for Quotation (RFQ) for ZLR323S2832GR0641T 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 ZLR323S2832GR0641T reliable?
The price and inventory of ZLR323S2832GR0641T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZLR323S2832GR0641T is usually 5 days.
3.What payment methods are accepted for ZLR323S2832GR0641T?
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ZLR323S2832GR0641T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZLR323S2832GR0641T 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 ZLR323S2832GR0641T?
For technical support, including ZLR323S2832GR0641T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZLR323S2832GR0641T requirements.
6.How does Aetrix verify that ZLR323S2832GR0641T is sourced from the original manufacturer or authorized distributors?
All ZLR323S2832GR0641T 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 ZLR323S2832GR0641T meets industry standards.
7.What is the process for return or replacement of ZLR323S2832GR0641T?
All ZLR323S2832GR0641T units undergo pre-shipment inspection (PSI). If there is an issue with ZLR323S2832GR0641T, 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 ZLR323S2832GR0641T part is unused and in its original packaging.
Return procedure for ZLR323S2832GR0641T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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