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Renesas HD407A4369S
- Part No.:
- HD407A4369S
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
HD407A4369S.pdf
- Description:
- MICROCONTROLLER, 4-BIT, OTPROM
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Inventory:221
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Product details
Overview
HD407A4369 from Renesas Electronics is a 4-bit ZTAT™ PROM-based microcontroller in the HMCS400 family, featuring 16,384-word PROM, 512 × 4-bit RAM, an 8-bit 12-channel A/D converter, and four low-power modes (standby, stop, watch, subactive). It operates with a minimum instruction cycle time of 0.47 µs at 8.5 MHz and targets embedded control applications requiring rapid prototyping and production-ready firmware loading.
For engineers reviewing the HD407A4369 datasheet, HD407A4369 pinout, HD407A4369 application, or HD407A4369 equivalent, this page delivers verified technical context, validated pin functions for FP-64B/DP-64S packages, real-world use cases in industrial sensing and appliance control, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The HD407A4369 integrates a 4-bit CPU core with 14-bit program counter, 10-bit stack pointer, and dual ALU architecture supporting bit-manipulation instructions (SEM/SEMD, REM/REMD, TM/TMD) for efficient I/O and interrupt handling. Its memory subsystem includes PROM-programmable 16-kword × 10-bit ROM and 512-digit × 4-bit RAM mapped across dedicated register, data, and stack regions.
It implements three independent timers (A/B/C), one input capture timer (TOC), one event counter (EVNB), an 8-bit clock-synchronous serial interface (SCK/SI/SO), and alarm output (BUZZ), all synchronized to a selectable system clock derived from either main oscillator (up to 8.5 MHz) or 32.768-kHz subclock (X1/X2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 4-bit HMCS400 CPU with 14-bit PC, 10-bit SP, and bit-manipulation instruction support |
| PROM Capacity | 16,384 words × 10 bits - factory-programmable via ZTAT™ (27256-compatible) PROM writer |
| RAM Size | 512 digits × 4 bits - organized as memory register, data, stack ($3C0–$3FF), and RAM-mapped register areas ($000–$03F) |
| A/D Converter | 8-bit resolution, 12 analog inputs (AN0–AN11), programmable conversion time, AVCC/AVSS separate analog supply pins |
| Instruction Cycle | 0.47 µs minimum - achieved at fOSC = 8.5 MHz with 1/4 division ratio; supports 1/4, 1/8, 1/16, 1/32 clock division |
| I/O Pins | 54 total: 53 I/O (including 8 high-current NMOS open-drain pins rated 15 mA max) + 1 input-only (RA1) |
| Low-Power Modes | Four modes - Standby (CPU halted, peripherals active), Stop (all clocks stopped), Watch (subclock active), Subactive (subclock + selected peripherals) |
Pinout & Package
HD407A4369 is available in three package variants: DP-64S (plastic DIP), FP-64B (plastic QFP), and FP-64A (plastic QFP). All are 64-pin packages with identical pin count and function mapping per pin number across variants. Pin functions are validated per Renesas Rev. 6.0 documentation (Sept. 1998).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 33/27/25) | Power supply input | Primary logic supply (2.7–6.0 V); must be decoupled near device |
| GND (Pin 16/10/8) | Ground reference | Digital ground return; separate AVSS required for A/D accuracy |
| RESET (Pin 13/7/5) | Active-low reset input | Asynchronous hardware reset; initiates vector fetch from $0000 |
| OSC1/OSC2 (Pins 14/15, 8/9, 6/7) | Main oscillator interface | Connects to ceramic resonator or crystal; supports external clock drive |
| X1/X2 (Pins 17/18, 11/12, 9/10) | 32.768-kHz subclock | Enables low-power watch mode and real-time clock functions |
| AN0–AN11 (Pins 20–31, 14–25, 12–23) | Analog inputs | 12-channel single-ended inputs for A/D converter; share port R3/R4/R5 |
| SCK/SI/SO (Pins 8/9/10, 2/3/4, 64/1/2) | Serial interface | Full-duplex synchronous communication; SCK bidirectional, SI input, SO output |
| TOC/EVNB/BUZZ (Pins 11/36/37, 5/30/31, 3/29) | Timer & alarm outputs | TOC = timer output; EVNB = event counter input; BUZZ = square-wave alarm generator |
Key Features
| Feature | Design Value |
|---|---|
| ZTAT™ PROM programmability | Enables field firmware updates and eliminates mask-ROM NRE delays; compatible with standard 27256 PROM programmers |
| 12-channel 8-bit A/D converter | Supports simultaneous sensor monitoring in industrial controls without external ADC; AVCC/AVSS isolation improves noise immunity |
| Four low-power operating modes | Reduces system power to µA-level in Stop mode; Watch mode enables RTC functionality with <10 µA current draw |
| 54-pin I/O with high-current capability | Eight NMOS open-drain pins deliver 15 mA each - directly drive LEDs, relays, or buzzer circuits without external drivers |
| Interrupt architecture | Seven sources (2 external, 3 timer, 1 A/D, 1 serial) with individual mask/flag registers enable deterministic real-time response |
Applications
| Industrial Sensor Node | Home Appliance Control |
|---|---|
Use Scenario: Temperature/humidity monitoring unit with local display and relay output in HVAC ducts. IC Role / Device Role / Timing Role: Main controller executing sensor polling, A/D conversion, PID calculation, and relay timing via TOC/EVNB. Use Value: Integrated 12-channel A/D and 0.47 µs instruction cycle enable sub-10 ms loop times; ZTAT™ allows firmware tuning post-deployment. |
Use Scenario: Microwave oven control panel managing keypad scan, display driver, and magnetron timing. IC Role / Device Role / Timing Role: System-on-chip managing user input, safety interlocks, and precise 2.45 GHz magnetron burst timing via BUZZ and timers. Use Value: High-current I/O pins drive buzzer and display segments directly; Stop mode reduces standby power to <5 µA during idle periods. |
| Portable Medical Device | Factory Automation I/O Module |
Use Scenario: Battery-powered blood glucose meter with LCD, button interface, and optical sensor interface. IC Role / Device Role / Timing Role: Signal acquisition controller performing analog front-end conditioning, A/D sampling, and result display via D-port. Use Value: Subactive mode maintains 32.768-kHz clock for time-stamped readings while consuming <15 µA; AVCC/AVSS separation ensures ±1 LSB A/D accuracy. |
Use Scenario: DIN-rail mounted I/O expansion module converting 24 V DC sensor signals to RS-485 digital output. IC Role / Device Role / Timing Role: Protocol bridge translating discrete inputs to Modbus RTU frames using serial interface and timer-driven framing. Use Value: Input capture timer (TOC) precisely measures pulse width of encoder signals; 53 I/O pins support configurable sourcing/sinking per channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD40A4369 | Same 16-kword ROM capacity and 0.47 µs instruction cycle, but uses mask ROM instead of PROM; no field-programmable capability | Requires upfront mask design; unsuitable for iterative development or small-batch customization | Select HD40A4369 only for high-volume production where firmware is fixed and NRE cost amortization justifies mask ROM |
| HD404369 | Same architecture and pinout, but slower 0.8 µs instruction cycle (fOSC = 5 MHz); uses standard ROM, not ZTAT™ PROM | Lacks field-programmability and high-speed timing; limited to cost-sensitive, non-upgradable designs | Choose HD404369 when budget constraints outweigh need for rapid prototyping or firmware updates |
Compared with HD407A4369, HD40A4369 offers identical speed and I/O but requires mask ROM commitment, while HD404369 trades programmability and performance for lower unit cost - making HD407A4369 the optimal choice for development agility and production flexibility.
Availability
HD407A4369 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control systems, and portable medical devices requiring stable component supply, long-term lifecycle support, and field-upgradable firmware capability.
Supply support for HD407A4369 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 leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for industrial and automotive markets.
The HD407A4369 belongs to the HMCS400-Series microcomputer product line, designed specifically for cost-sensitive, low-power embedded control applications where rapid firmware iteration and mixed-signal integration are critical - such as appliance panels, sensor interfaces, and battery-operated instrumentation.
FAQ
What is the programming method for HD407A4369 PROM?
The HD407A4369 uses ZTAT™ (Zero Turnaround Time) PROM technology compatible with standard 27256 EPROM programmers. Firmware is written externally using a PROM writer before soldering; no on-chip programming circuitry or bootloader is present. This enables fast debug-to-production cycles without mask ROM lead times. HD407A4369 does not support in-circuit reprogramming.
Does HD407A4369 support 3.3 V operation?
Yes, HD407A4369 operates across a supply voltage range of 2.7 V to 6.0 V, fully supporting 3.3 V nominal systems. The A/D converter's AVCC and AVSS pins must be tied to the same 3.3 V rail as VCC, with a 0.1 µF bypass capacitor between AVCC and AVSS if noise isolation is required. All I/O pins are 3.3 V tolerant in this configuration.
How many interrupt sources does HD407A4369 have, and how are they prioritized?
HD407A4369 has seven interrupt sources: two external (INT0, INT1), three timer-based (timer A/B/C), one A/D conversion complete, and one serial interface. Priority is fixed in hardware: reset > INT0 > timer A > INT1 > timer B > A/D > timer C > serial. Each source has dedicated mask (IMx) and flag (IFx) bits in the RAM-mapped interrupt control area ($000–$003).
What is the function of the BUZZ pin on HD407A4369?
The BUZZ pin (D3) is a dedicated square-wave output capable of driving piezoelectric buzzers or indicator LEDs directly. Its frequency and duty cycle are controlled by timer C and the BUZZ enable bit in the miscellaneous register (MIS). HD407A4369 does not require external oscillators or drivers for basic audible alerts - simplifying bill-of-materials in appliance and industrial HMI designs.
Can HD407A4369 operate without an external crystal?
Yes, HD407A4369 can operate using only its internal ceramic-resonator-compatible oscillator (OSC1/OSC2) or even an external clock signal applied to OSC1. The 32.768-kHz subclock (X1/X2) is optional and only required for watch mode or real-time clock functions. For basic operation, a 4–8.5 MHz ceramic resonator suffices - eliminating crystal BOM cost and layout complexity.
HD407A4369S 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:
HD407A4369S FAQ
1.How can I place an order for HD407A4369S through Aetrix?
Please submit a Request for Quotation (RFQ) for HD407A4369S 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 HD407A4369S reliable?
The price and inventory of HD407A4369S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD407A4369S is usually 5 days.
3.What payment methods are accepted for HD407A4369S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD407A4369S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD407A4369S?
HD407A4369S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD407A4369S 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 HD407A4369S?
For technical support, including HD407A4369S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD407A4369S requirements.
6.How does Aetrix verify that HD407A4369S is sourced from the original manufacturer or authorized distributors?
All HD407A4369S 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 HD407A4369S meets industry standards.
7.What is the process for return or replacement of HD407A4369S?
All HD407A4369S units undergo pre-shipment inspection (PSI). If there is an issue with HD407A4369S, 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 HD407A4369S part is unused and in its original packaging.
Return procedure for HD407A4369S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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