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Renesas M38504E6SP#U1
- Part No.:
- M38504E6SP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
M38504E6SP#U1.pdf
- Description:
- 8-BIT, OTPROM, MELPS740 CPU
- Quantity:
- Payment:
- Shipping:
Inventory:4,375
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Product details
Overview
M38504E6SP#U1 from Renesas Electronics is an 8-bit CMOS microcomputer based on the 740 family core, designed for embedded control in household and office automation equipment. It integrates 24 KB mask ROM, 512 bytes RAM, a 10-bit 5-channel A-D converter, four 8-bit timers, and dual serial I/O (UART + clock-synchronized). It operates from 2.7–5.5 V and supports low-power operation down to 60 µW in 32 kHz mode.
For engineers reviewing the M38504E6SP#U1 datasheet, M38504E6SP#U1 pinout, M38504E6SP#U1 application, or M38504E6SP#U1 equivalent, key selection criteria include its Spec. H architecture, 42-pin SDIP (42P4B) package, LED-driver-capable P10–P17 ports, and compatibility with ceramic resonator or quartz crystal clock sources.
Technical Context
The M38504E6SP#U1 implements the 740-family instruction set with 71 basic machine-language instructions and a minimum execution time of 0.5 µs at 8 MHz. Its CPU includes accumulator A, index registers X/Y, 8-bit stack pointer S, and 16-bit program counter (PCH/PCL), supporting subroutine calls and interrupt handling with automatic register push/pop.
It features two independent clock-generating circuits: main-clock (XIN/XOUT) for high-speed operation and sub-clock (XCIN/XCOUT) for low-power 32 kHz mode. The A-D converter supports five analog inputs (AN0–AN4) with internal reference (VREF), and serial I/O1 supports UART or clock-synchronized modes while I/O2 is clock-synchronized only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 740-family 8-bit CPU with 71 instructions; enables compact firmware for cost-sensitive control applications. |
| Memory | 24 KB mask ROM (24446 user bytes), 512 bytes RAM; sufficient for standalone appliance firmware without external memory. |
| ADC | 10-bit resolution × 5 channels (AN0–AN4); supports sensor interfacing in thermostats, power supplies, and motor controls. |
| Timers & PWM | Four 8-bit timers + one 8-bit PWM output (P44); enables precise timing, event counting, and basic motor/servo control. |
| Serial Interfaces | UART-capable SI/O1 (P24/RxD, P25/TxD) + clock-synchronized SI/O2 (P00–P03); supports host communication and peripheral daisy-chaining. |
| Power Supply | 2.7–5.5 V operation across all speed modes; simplifies power design with single-supply compatibility. |
| Low-Power Mode | 60 µW at 32 kHz/3 V; enables battery-backed real-time monitoring in standby states. |
Pinout & Package
Package: 42-pin plastic-molded SDIP (42P4B), through-hole mount, 0.6-inch width, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00/SIN2 | Serial I/O2 input | Receives clock-synchronized data; requires external clock on SCLK2 (P02) for operation. |
| P10–P17 | LED driver I/O port | Capable of sourcing higher current for direct LED segment or indicator driving without external drivers. |
| P24/RxD, P25/TxD | UART interface pins | Enable full-duplex asynchronous communication with PCs, displays, or other microcontrollers. |
| P30/AN0–P34/AN4 | Analog input channels | Accept 0–VREF voltage signals; used for temperature, voltage, or potentiometer sensing. |
| XIN/XOUT | Main clock oscillator terminals | Support external quartz crystal (1–8 MHz) or ceramic resonator for stable system timing. |
| XCIN/XCOUT | Sub-clock oscillator terminals | Connect 32.768 kHz tuning-fork crystal for RTC or ultra-low-power wake-up timing. |
| RESET | Active-low reset input | Asynchronous reset signal; must be held low ≥100 ns after power stabilization for reliable boot. |
Key Features
| Feature | Design Value |
|---|---|
| Dual clock domains | Main clock (up to 8 MHz) for active processing; sub-clock (32 kHz) for autonomous low-power timing and wake-up. |
| Integrated A-D converter | 10-bit resolution with internal reference; eliminates need for external ADC in basic sensor applications. |
| LED-driving I/O ports | P10–P17 support enhanced current drive; reduces BOM count in display and status-light designs. |
| Interrupt architecture | 15 interrupt sources with 14 vectors; enables responsive real-time event handling without polling overhead. |
| Software-compatible family | Shares instruction set and peripheral register map with M38503/M38507 series; simplifies firmware reuse across product variants. |
Applications
| Home Appliance Control | Office Equipment Monitoring |
|---|---|
Use Scenario: Embedded controller in microwave ovens managing keypad scan, display update, timer sequencing, and safety interlock logic. IC Role / Device Role / Timing Role: Primary system MCU executing real-time cooking profiles, sampling door switch and temperature sensors via AN0–AN4, and driving LED indicators via P10–P17. Use Value: Integrated UART enables field-service diagnostics; low-power 32 kHz mode maintains clock during standby without external RTC. | Use Scenario: Power management unit in multifunction printers regulating heater duty cycle, paper jam detection, and toner level reporting. IC Role / Device Role / Timing Role: Dedicated subsystem controller reading thermistor (AN2), generating PWM (P44) for fuser lamp, and communicating status via UART (P24/P25) to main SoC. Use Value: 24 KB ROM stores calibrated thermal profiles; 512-byte RAM holds runtime variables without external SRAM. |
| Industrial Panel Meters | Consumer Audio Remote Interface |
Use Scenario: Front-panel controller in DIN-rail mounted power meters displaying RMS voltage/current and logging peak values. IC Role / Device Role / Timing Role: Signal acquisition MCU converting analog inputs (AN0–AN4) from shunt/transformer circuits, updating 7-segment LED display via P10–P17, and storing min/max in ROM. Use Value: Built-in 10-bit ADC meets Class 1 accuracy requirements; 42P4B SDIP package allows manual rework in industrial assembly. | Use Scenario: IR remote receiver subsystem in Bluetooth speakers decoding NEC/RC-5 protocols and controlling volume, source, and LED feedback. IC Role / Device Role / Timing Role: Dedicated protocol decoder using UART (P24/P25) for IR carrier demodulation and P10–P17 for multi-color LED status indication. Use Value: 0.5 µs instruction cycle ensures precise carrier timing capture; low 60 µW sleep current extends coin-cell battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M38503M4H-XXXSP | 16 KB mask ROM, 640 bytes RAM, same Spec. H peripherals and pinout. | Suitable where firmware size is smaller and RAM headroom is needed for larger buffers. | Select when firmware fits in 16 KB and additional RAM improves real-time response. |
| M38504M6-XXXSP | 24 KB mask ROM, 1024 bytes RAM, identical Spec. H feature set and package. | Preferred for applications requiring larger variable space (e.g., multi-sensor fusion or extended communication stacks). | Choose when 512-byte RAM is insufficient but full Spec. H compatibility is mandatory. |
Compared with M38504E6SP#U1, M38503M4H-XXXSP offers less ROM but more RAM for dynamic data handling, while M38504M6-XXXSP provides identical ROM capacity with doubled RAM-both retain the same 42P4B footprint, A-D converter, and UART capability for seamless migration.
Availability
M38504E6SP#U1 is available at Aetrix Electronics and suitable for home appliance control, office equipment monitoring, and industrial panel metering requiring stable component supply over extended production lifecycles.
Supply support for M38504E6SP#U1 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 specializing in microcontrollers, analog, and power solutions for industrial, automotive, and consumer markets.
The 3850 Group (Spec. H) product line was engineered for cost-effective, low-power embedded control in household and office automation equipment-prioritizing integration of ADC, UART, PWM, and LED-driving I/O in a single 42-pin package.
FAQ
What is the maximum operating frequency of the M38504E6SP#U1?
The M38504E6SP#U1 supports a maximum operating frequency of 8 MHz in high-speed mode, achieved using an external crystal or ceramic resonator connected between XIN and XOUT. At this frequency, the minimum instruction execution time is 0.5 µs, enabling responsive real-time control in applications such as appliance timers and sensor readouts.
Does the M38504E6SP#U1 include an integrated A-D converter?
Yes, the M38504E6SP#U1 includes a 10-bit successive-approximation A-D converter with five input channels (AN0–AN4) referenced to VREF. This integrated ADC eliminates the need for external conversion circuitry in applications like temperature monitoring, power supply feedback, and potentiometer-based user interfaces.
What package type is used for the M38504E6SP#U1?
The M38504E6SP#U1 uses a 42-pin plastic-molded SDIP package (42P4B), a through-hole format with 0.6-inch body width and standard 0.1-inch pin pitch. This package supports manual assembly, rework, and high-reliability mounting in industrial and consumer equipment where surface-mount constraints apply.
Can the M38504E6SP#U1 operate from a 3 V supply?
Yes, the M38504E6SP#U1 operates from 2.7 V to 5.5 V across all speed modes, including high-speed (8 MHz), middle-speed, and low-speed (32 kHz) operation. At 3 V and 32 kHz, it consumes only 60 µW, making it suitable for battery-powered or energy-harvesting subsystems requiring extended standby duration.
Which pins on the M38504E6SP#U1 support LED driving?
The M38504E6SP#U1 supports direct LED driving on port pins P10 through P17-eight dedicated I/O lines capable of sourcing higher current than standard GPIO. These pins are commonly used to drive 7-segment displays, status indicators, or backlight controls without external transistor drivers, reducing bill-of-materials cost.
M38504E6SP#U1 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:
M38504E6SP#U1 FAQ
1.How can I place an order for M38504E6SP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M38504E6SP#U1 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 M38504E6SP#U1 reliable?
The price and inventory of M38504E6SP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38504E6SP#U1 is usually 5 days.
3.What payment methods are accepted for M38504E6SP#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38504E6SP#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38504E6SP#U1?
M38504E6SP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38504E6SP#U1 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 M38504E6SP#U1?
For technical support, including M38504E6SP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38504E6SP#U1 requirements.
6.How does Aetrix verify that M38504E6SP#U1 is sourced from the original manufacturer or authorized distributors?
All M38504E6SP#U1 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 M38504E6SP#U1 meets industry standards.
7.What is the process for return or replacement of M38504E6SP#U1?
All M38504E6SP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with M38504E6SP#U1, 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 M38504E6SP#U1 part is unused and in its original packaging.
Return procedure for M38504E6SP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M38504E6SP#U1 Tags
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ATTINY4-TSHR
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PIC10F200T-I/OT
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