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Analog Devices Inc./Maxim Integrated ZLF645E0H2064G
- Part No.:
- ZLF645E0H2064G
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ZLF645E0H2064G.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,407
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Product details
Overview
ZLF645E0H2064G from Maxim Integrated is a Crimzon® infrared-optimized Flash MCU featuring an integrated IR learning amplifier, 64 KB flash memory, 1 KB RAM, and dual programmable timers (8-bit and 16-bit) for IR signal generation and demodulation. It operates from 2.0 V to 3.6 V and targets infrared remote control systems requiring robust signal acquisition under varying battery voltages.
For engineers reviewing the ZLF645E0H2064G datasheet, ZLF645E0H2064G pinout, ZLF645E0H2064G application, or ZLF645E0H2064G equivalent, key selection criteria include its on-die IR amplification circuitry, STOP mode recovery on any SMR input change, UART with BRG-as-timer flexibility, and 20-pin QFN package compatibility with photodiode-based IR receiver front-ends.
Technical Context
The ZLF645E0H2064G implements the Z8® LXMC CPU core and integrates dedicated hardware for infrared learning: a tuned analog amplifier stage with no external components beyond a photodiode, plus T8/T16 timers configured for precise carrier-frequency demodulation and pulse-width measurement. Its SMR (Stop Mode Recovery) logic supports 12 configurable inputs (P20–P27, P30–P33, P00, P07) for wake-up on any logic transition.
It features three low-power modes-STOP (1.7 µA typ), HALT (0.6 mA typ), and voltage brownout standby-with fast STOP recovery via dedicated registers (SMR1–SMR4). The UART supports 4800–38400 baud with parity and 1/2 stop bits, and its baud rate generator can be repurposed as a third 8-bit timer when UART is idle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 64 KB - sufficient for full IR protocol stacks including NEC, RC-5, RC-6, and custom learning firmware with buffer space. |
| RAM | 1 KB - supports real-time IR waveform capture, decoding state machines, and UART buffering without external memory. |
| Supply Voltage | 2.0 V–3.6 V - enables direct operation from single-cell Li-ion or two-cell alkaline batteries across full discharge range. |
| IR Learning Amplifier | Integrated, tuned analog front-end - eliminates external op-amp and gain-setting resistors; requires only photodiode. |
| STOP Current | 1.7 µA (typ) - allows multi-year battery life in remote controls with motion- or IR-triggered wake-up. |
| Timers | One 8-bit + one 16-bit counter/timer - hardware-accelerated IR carrier detection, pulse timing, and modulation synthesis. |
| UART Baud Rates | 4800, 9600, 19200, 38400 - supports host MCU communication for configuration, diagnostics, and firmware updates. |
Pinout & Package
Package: 20-pin QFN (4 mm × 4 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 / P30 | Port 0 bit 0 / Port 3 bit 0 | Shared input pin; P30 is dedicated SMR-capable input for wake-up; P00 is general I/O with pull-up option. |
| P07 | Port 0 bit 7 | General-purpose I/O with programmable pull-up; used for status LED or auxiliary control signals. |
| P20–P27 | Port 2 bits 0–7 | All support SMR wake-up and interrupt generation; ideal for keypad matrix scanning or sensor inputs. |
| P31–P33 | Port 3 bits 1–3 | Dedicated SMR inputs with glitch filtering; optimized for reliable IR signal edge detection during wake-up. |
| XTAL1 / XTAL2 | Cry stal oscillator interface | Supports 1–12 MHz crystals; provides stable clock for IR carrier frequency accuracy and UART timing. |
| VDD / GND | Power supply pins | Single 2.0–3.6 V supply; low-noise layout critical for analog IR amplifier performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IR learning amplifier | Eliminates external op-amp and bias network; enables photodiode-only front-end with consistent gain across battery voltage range. |
| SMR wake-up on any logic change | 12 configurable inputs (P20–P27, P30–P33, P00, P07) allow ultra-low-power wake-up without polling or external interrupt controllers. |
| UART with BRG-as-timer mode | When UART is inactive, baud rate generator becomes a functional 8-bit timer-reducing need for additional timing peripherals. |
| Flash option bit configuration | User-selectable settings (e.g., port pull-ups, WDT enable, memory protection) stored in nonvolatile Flash-no external EEPROM required. |
| STOP mode recovery in <1 µs | Hardware-accelerated wake-up path bypasses full reset sequence-critical for responsive IR learning and command execution. |
Applications
| Universal Remote Programming | Smart Home IR Bridge |
|---|---|
Use Scenario: Replacement remote learns commands from legacy devices (TV, AC, set-top box) using IR carrier detection and pulse-width analysis. IC Role / Device Role / Timing Role: ZLF645E0H2064G acts as IR signal acquisition engine and protocol decoder; T8/T16 timers perform real-time carrier demodulation and pulse edge timing. Use Value: On-die IR amplifier ensures reliable learning at 2.2 V battery voltage where competing MCUs fail; 64 KB Flash stores multiple protocol libraries. | Use Scenario: Wi-Fi/BLE-enabled hub receives cloud-based IR codes and transmits them via IR LED to legacy appliances. IC Role / Device Role / Timing Role: ZLF645E0H2064G serves as IR waveform synthesizer and driver controller; UART interfaces with host SoC; STOP mode minimizes idle power. Use Value: Hardware IR modulation reduces host CPU load; 1.7 µA STOP current extends battery life in portable bridges; 20-pin QFN simplifies compact PCB layout. |
| IR-Based Industrial Control | Low-Power Consumer Remote |
Use Scenario: Factory floor remote triggers machine functions in EMI-heavy environments where RF is unreliable. IC Role / Device Role / Timing Role: ZLF645E0H2064G provides noise-immune IR reception via analog front-end and digital glitch filtering; SMR inputs detect button press events. Use Value: Integrated comparator and programmable reference voltages enable robust signal discrimination; Flash memory stores encrypted command sets. | Use Scenario: Disposable or ultra-low-cost TV remote powered by two AAA cells with >2-year shelf life. IC Role / Device Role / Timing Role: ZLF645E0H2064G manages IR transmission, keypad scan, LED feedback, and battery monitoring in single-chip solution. Use Value: 2.0 V minimum operating voltage and 1.7 µA STOP current maximize usable battery capacity; no external passive components reduce BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar infrared microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NEC uPD6132A | 8-bit CMOS MCU with IR receiver preamp; 32 KB ROM, no Flash; fixed instruction set; no SMR wake-up. | Limited to factory-programmed IR protocols; no field-upgradable learning firmware. | Choose for cost-sensitive, high-volume remotes with static functionality and no learning requirement. |
| Renesas RL78/I1A | 16-bit Flash MCU; 128 KB Flash, 10 KB RAM; no integrated IR amplifier; requires external signal conditioning. | Higher performance for complex UI or BLE co-processing; IR front-end must be designed separately. | Choose when system demands >64 KB code space, advanced peripherals, or multi-protocol wireless integration. |
Compared with uPD6132A and RL78/I1A, the ZLF645E0H2064G uniquely combines Flash programmability, on-die IR amplification, and sub-2 µA STOP current-enabling field-upgradable learning remotes with minimal external components and extended battery life.
Availability
ZLF645E0H2064G is available at Aetrix Electronics and suitable for infrared remote control, smart home bridge devices, industrial IR command systems, and low-power consumer electronics requiring stable component supply and long-term manufacturability.
Supply support for ZLF645E0H2064G 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 industrial, automotive, communications, and consumer markets.
The ZLF645 Series belongs to Maxim's Crimzon® infrared microcontroller product line, engineered specifically to replace discrete IR receiver + MCU combinations with a single-chip solution that integrates learning amplification, protocol decoding, and ultra-low-power operation.
FAQ
What is the primary function of the IR learning amplifier in ZLF645E0H2064G?
The IR learning amplifier in ZLF645E0H2064G is an integrated, factory-tuned analog front-end that conditions photodiode signals for reliable IR carrier detection and pulse-width measurement across 2.0–3.6 V supply range. It eliminates external op-amps and bias networks, reducing BOM count and improving consistency in ZLF645E0H2064G-based remotes.
Does ZLF645E0H2064G support in-circuit programming, and how is it implemented?
Yes, ZLF645E0H2064G supports in-circuit programming (ICP) via a serial interface multiplexed with a GPIO pin. The ICP interface enables flash programming, erasure, and read operations without removing the device from the PCB. It uses auto-baud detection and supports standard commands for mass erase, page erase, and byte programming-fully documented in the ZLF645E0H2064G datasheet sections 53–66.
What power modes does ZLF645E0H2064G offer, and what is the typical current draw in STOP mode?
ZLF645E0H2064G offers three low-power modes: STOP (1.7 µA typ), HALT (0.6 mA typ), and voltage brownout standby. In STOP mode, the CPU, flash, and most peripherals are halted while SMR inputs remain active for wake-up. This enables multi-year battery life in remote controls, and ZLF645E0H2064G resumes execution in under 1 µs upon valid SMR event.
How many I/O pins on ZLF645E0H2064G support Stop Mode Recovery (SMR) wake-up?
ZLF645E0H2064G supports SMR wake-up on 12 dedicated inputs: P20–P27 (8 pins), P30–P33 (4 pins), plus P00 and P07. Each can be individually enabled for rising/falling/both-edge detection. This capability is central to ZLF645E0H2064G's role in ultra-low-power IR remotes where wake-up latency and reliability are critical.
Is ZLF645E0H2064G pin-compatible with other members of the ZLF645 series?
ZLF645E0H2064G uses the 20-pin QFN package defined in the ZLF645 series specification and shares identical pin functions and electrical characteristics with other 20-pin variants (e.g., ZLF645E0H2032G). Pin compatibility is confirmed in Tables 3 and 4 of the ZLF645E0H2064G datasheet, supporting drop-in replacement within the same package family.
ZLF645E0H2064G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Series:
- Crimzon™ ZLF
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Verified
- Core Processor:
- Z8 LXMC
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- UART/USART
- Peripherals:
- Brown-out Detect/Reset, HLVD, POR, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.9V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ZLF645E0H2064G FAQ
1.How can I place an order for ZLF645E0H2064G through Aetrix?
Please submit a Request for Quotation (RFQ) for ZLF645E0H2064G 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 ZLF645E0H2064G reliable?
The price and inventory of ZLF645E0H2064G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZLF645E0H2064G is usually 5 days.
3.What payment methods are accepted for ZLF645E0H2064G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZLF645E0H2064G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZLF645E0H2064G?
ZLF645E0H2064G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZLF645E0H2064G 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 ZLF645E0H2064G?
For technical support, including ZLF645E0H2064G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZLF645E0H2064G requirements.
6.How does Aetrix verify that ZLF645E0H2064G is sourced from the original manufacturer or authorized distributors?
All ZLF645E0H2064G 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 ZLF645E0H2064G meets industry standards.
7.What is the process for return or replacement of ZLF645E0H2064G?
All ZLF645E0H2064G units undergo pre-shipment inspection (PSI). If there is an issue with ZLF645E0H2064G, 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 ZLF645E0H2064G part is unused and in its original packaging.
Return procedure for ZLF645E0H2064G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZLF645E0H2064G Tags
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