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Renesas HD4074899H
- Part No.:
- HD4074899H
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
HD4074899H.pdf
- Description:
- 4-BIT, OTPROM, 4.2MHZ
- Quantity:
- Payment:
- Shipping:
Inventory:333
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Product details
Overview
HD4074899H from Renesas Electronics is a 4-bit ZTAT™ single-chip microcomputer with on-chip 16,384-word PROM, 1,344-digit RAM, 46 I/O pins, 10-bit × 6-channel A/D converter, and integrated LCD controller/driver (32 segments × 4 commons). It operates from 1.8 V to 5.5 V and supports low-power modes including stop, watch, standby, and subactive modes. It is used in battery-powered LCD display control applications such as remote controllers and home appliance panels.
For engineers reviewing the HD4074899H datasheet, HD4074899H pinout, HD4074899H application, or HD4074899H equivalent, key selection criteria include its ZTAT™ PROM architecture for rapid prototyping, 10-bit ADC resolution, LCD segment drive capability, and compatibility with 32.768 kHz sub-clock for real-time clock functions.
Technical Context
The HD4074899H implements a 4-bit CPU core with subroutine stack depth up to 16 levels and supports four timer/counters: one 16-bit timer (configurable as two 8-bit timers) and two 8-bit timers. Its interrupt system includes three external sources (one edge-programmable) and six internal sources.
It integrates an 8-bit synchronous serial interface, two PWM-capable timer outputs, two edge-programmable event counter inputs, and an 8-bit input capture circuit - all synchronized to the main oscillator or sub-oscillator (32.768 kHz crystal).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Architecture | 4-bit single-chip microcomputer with 16-level subroutine stack and 0.89 µs min instruction execution time at 4.5 MHz |
| Memory | 16,384-word on-chip PROM (ZTAT™), 1,344-digit RAM - enables firmware programming without external EPROM and supports fast debug-to-production transition |
| A/D Converter | 10-bit resolution × 6 channels - provides precise analog sensing for sensor interfaces in portable devices |
| LCD Driver | 32-segment × 4-common on-chip controller - drives multiplexed LCD panels directly without external driver ICs |
| Operating Voltage | 1.8 V to 5.5 V - supports wide-range battery operation including single-cell Li-ion and dual-cell alkaline |
| Low-Power Modes | Four modes (stop, watch, standby, subactive) with wakeup via 4 dedicated pins - extends battery life in intermittent-use applications |
| Real-Time Clock | Integrated 32.768 kHz sub-oscillator circuit - enables accurate timekeeping without external RTC IC |
Pinout & Package
HD4074899H is housed in an 80-pin plastic QFP package (FP-80A), measuring 14 mm × 20 mm with 0.65 mm lead pitch. The package is RoHS-compliant and rated for operation from –20 °C to +75 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 16) | Main power supply | Accepts 1.8–5.5 V; powers core logic, I/O, and on-chip peripherals |
| GND (Pin 12) | Ground reference | Primary digital ground return path for all internal circuits |
| RESET (Pin 15) | Reset input | Active-low asynchronous reset; initializes CPU, registers, and peripheral states |
| OSC1/OSC2 (Pins 10/11) | Main oscillator interface | Supports ceramic or crystal resonator (up to 4.5 MHz) for system clock generation |
| X1/X2 (Pins 14/13) | Sub-oscillator interface | Connects 32.768 kHz crystal for RTC and low-power timing functions |
| D0–D11 (Pins 17–28) | General-purpose I/O | D0–D3: large-current source (10 mA max); D4–D11: large-current sink (15 mA max) |
| R00–R63, R70–R81 (Pins 29–56, 2–7) | Multiplexed I/O port | Supports LCD segment driving (SEG1–SEG32), analog input (AN0–AN5), and wakeup (WU0–WU3) |
| COM1–COM4 (Pins 73–76) | LCD common output | Drives LCD backplane signals; paired with SEG pins for static/multiplexed display |
| V0–V3 (Pins 80–77) | LCD bias voltage taps | Software-controllable internal resistor ladder for LCD contrast adjustment |
Key Features
| Feature | Design Value |
|---|---|
| ZTAT™ PROM architecture | Enables in-system programming and eliminates need for external EPROM; reduces development cycle from debug to mass production |
| On-chip 10-bit × 6-channel A/D converter | Provides high-resolution analog sensing without external ADC, reducing BOM count and PCB area |
| Integrated 32×4 LCD controller/driver | Drives full alphanumeric LCD panels directly; eliminates external segment drivers and simplifies display subsystem design |
| Four configurable low-power modes | Allows dynamic power management: stop mode draws minimal current while retaining RAM and register contents |
| 32.768 kHz sub-oscillator support | Enables autonomous real-time clock operation during system sleep, critical for battery-backed timekeeping |
Applications
| Remote Control Units | Home Appliance Panels |
|---|---|
Use Scenario: IR-based universal remote with multi-device control and LCD status display. IC Role / Device Role / Timing Role: System controller executing command decoding, IR modulation, and LCD refresh at 60 Hz. Use Value: Integrated LCD driver and 10-bit ADC enable direct button voltage scanning and display update without external components. | Use Scenario: Microwave oven control panel with temperature sensing, timer, and segmented LCD display. IC Role / Device Role / Timing Role: Main MCU managing keypad scan, cooking cycle timing, and real-time clock via 32.768 kHz sub-oscillator. Use Value: On-chip RTC and low-power stop mode extend battery backup life beyond 1 year without external RTC IC. |
| Pager Display Modules | Portable Medical Monitors |
Use Scenario: Legacy alphanumeric pager with vibration alert and message scrolling on monochrome LCD. IC Role / Device Role / Timing Role: Primary processor handling RF data parsing, buzzer/BUZZ pin activation, and 4-common LCD multiplexing. Use Value: BUZZ pin (R12) drives piezo directly; 32-segment LCD support matches standard pager display layouts. | Use Scenario: Battery-powered blood pressure cuff with analog pressure transducer interface and LCD readout. IC Role / Device Role / Timing Role: Signal acquisition MCU performing 10-bit ADC sampling of analog pressure signal and driving 4-digit LCD. Use Value: 10-bit ADC resolution ensures ±1 mmHg measurement accuracy; 1.8 V minimum supply enables use with depleted batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-bit microcontroller with LCD and ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD404899H | Mask ROM (16,384 words), no PROM; requires mask tape-in; same pinout and peripheral set | Suitable for high-volume production where firmware is fixed and unchangeable post-manufacture | Select HD404899H only when firmware is finalized and cost-per-unit optimization outweighs flexibility needs |
| HD4074889H | 8-bit A/D converter (vs. 10-bit); identical ZTAT™ PROM, package, and LCD capability | Better suited for applications requiring lower ADC precision (e.g., basic battery voltage monitoring) | Choose HD4074889H when 8-bit resolution suffices and cost sensitivity favors reduced test complexity |
Compared with HD404899H and HD4074889H, HD4074899H uniquely combines field-programmable ZTAT™ PROM with 10-bit ADC resolution - making it optimal for mid-volume, firmware-evolving designs where both flexibility and measurement fidelity are required.
Availability
HD4074899H is available at Aetrix Electronics and suitable for remote controls, home appliance panels, and portable medical monitors requiring stable component supply across extended product lifecycles.
Supply support for HD4074899H 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
Renesas Electronics Corporation is a global semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.
The HD4074899H belongs to the HD404889/HD404899 Series of low-voltage 4-bit microcomputers designed specifically for cost-sensitive, battery-powered LCD display systems with integrated analog sensing and real-time clock functionality.
FAQ
What is the maximum operating frequency supported by HD4074899H?
The HD4074899H supports a maximum main oscillator frequency of 4.5 MHz, yielding a minimum instruction execution time of 0.89 µs. It accepts ceramic resonators, crystal resonators, or external clock sources on the OSC1/OSC2 pins. The sub-oscillator operates exclusively at 32.768 kHz for RTC functions. This frequency range balances performance and ultra-low power consumption for portable applications.
Does HD4074899H support in-system programming of its on-chip PROM?
Yes, HD4074899H uses Renesas' ZTAT™ (Zero Turn-Around Time) PROM technology, which allows in-circuit programming using standard PROM programmers compatible with the 27256 type. Programming occurs after assembly, enabling firmware updates during manufacturing test or field calibration - a key advantage over mask ROM variants like HD404899H.
How many LCD segments can HD4074899H drive, and what is the multiplexing configuration?
HD4074899H drives up to 32 segments with 4 commons (32 × 4), supporting static or 1/2–1/4 duty multiplexed LCD displays. Segment outputs (SEG1–SEG32) and common outputs (COM1–COM4) are assigned to dedicated pins; V0–V3 provide software-adjustable LCD bias voltages. This matches common alphanumeric LCD modules used in remote controls and appliance panels.
What are the wakeup sources from stop mode in HD4074899H?
HD4074899H supports wakeup from stop mode via four dedicated input pins: R00/WU0, R01/WU1, R02/WU2, and R03/WU3. These pins are configured as edge-triggered inputs and retain their function even when most peripherals are disabled. External interrupts (INT0/INT1) and timer events do not wake the device from stop mode - only these four WUx pins do.
Is HD4074899H pin-compatible with HD404899H?
Yes, HD4074899H is pin-compatible with HD404899H in the FP-80A package: both share identical pin count, pinout arrangement, electrical characteristics, and peripheral mapping. The primary difference lies in memory type (ZTAT™ PROM vs. mask ROM) and associated programming methodology - no PCB redesign is needed when migrating between them.
HD4074899H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
HD4074899H FAQ
1.How can I place an order for HD4074899H through Aetrix?
Please submit a Request for Quotation (RFQ) for HD4074899H 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 HD4074899H reliable?
The price and inventory of HD4074899H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD4074899H is usually 5 days.
3.What payment methods are accepted for HD4074899H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD4074899H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD4074899H?
HD4074899H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD4074899H 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 HD4074899H?
For technical support, including HD4074899H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD4074899H requirements.
6.How does Aetrix verify that HD4074899H is sourced from the original manufacturer or authorized distributors?
All HD4074899H 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 HD4074899H meets industry standards.
7.What is the process for return or replacement of HD4074899H?
All HD4074899H units undergo pre-shipment inspection (PSI). If there is an issue with HD4074899H, 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 HD4074899H part is unused and in its original packaging.
Return procedure for HD4074899H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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