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Renesas M3826AEFGP#U0
- Part No.:
- M3826AEFGP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
M3826AEFGP#U0.pdf
- Description:
- 8-BIT, OTPROM, MELPS740 CPU
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Product details
Overview
M3826AEFGP#U0 from Renesas Electronics is an 8-bit CMOS microcomputer based on the 740 family core, featuring integrated LCD drive control (4 common × 40 segment), dual 8-bit D/A converters (for DTMF/CTCSS), 8-channel 10-bit A/D converter, UART/Clock-synchronous serial interfaces, PWM, and watchdog timer - deployed in consumer camera and appliance control systems.
For engineers reviewing the M3826AEFGP#U0 datasheet, M3826AEFGP#U0 pinout, M3826AEFGP#U0 application, or M3826AEFGP#U0 equivalent, key selection considerations include its 100-pin PLQP0100KB-A QFP package, 48 KB mask ROM / 1536-byte RAM configuration, 1.8–5.5 V wide supply range, and LCD bias/duty flexibility (1/2, 1/3, 1/4).
Technical Context
The M3826AEFGP#U0 implements a 740-family CPU with 71 machine-language instructions, 0.4 µs minimum instruction cycle at 10 MHz, and six dedicated registers (A, X, Y, S, PC, PS). It supports dual clock sources: main oscillator (XIN/XOUT, up to 10 MHz) and sub-oscillator (XCIN/XCOUT, 32 kHz), enabling high-speed operation and ultra-low-power stop mode (27 µW typical).
Its peripheral set includes three 8-bit timers, two 16-bit timers, serial I/O1 (UART or clock-synchronous), serial I/O2 (clock-synchronous only), one 8-bit PWM channel, and real-time port (RTP) pins - all managed via memory-mapped SFRs in the zero page (0000–00FF16) and special page (FF00–FFFF16).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 740-family 8-bit RISC; executes 71 instructions with 0.4 µs min cycle at 10 MHz - enables deterministic real-time response in appliance UI and sensor polling loops. |
| Memory | 48 KB mask ROM (user area: 49022 bytes), 1536-byte RAM - sufficient for embedded camera firmware with LCD menu logic and analog sensor processing. |
| A/D Converter | 10-bit resolution × 8 channels (P60–P67); supports simultaneous sampling of battery voltage, temperature, and user input - critical for power management in portable devices. |
| D/A Converter | 8-bit × 2 channels (P56/DA1, P57/ADT/DA2); configured for DTMF tone generation and CTCSS signaling - directly drives audio codec or speaker driver without external DAC. |
| LCD Driver | 1/2, 1/3, or 1/4 duty; 1/2 or 1/3 bias; 4 COM × 40 SEG outputs - drives monochrome character or segmented displays in cameras and home appliances without external glass drivers. |
| Supply Range | 1.8 V to 5.5 V across all speed modes; supports single-supply operation from Li-ion (3.0–4.2 V) or alkaline (3×1.5 V) batteries - eliminates need for LDO in cost-sensitive designs. |
| Power Dissipation | Typ. 28 mW at 10 MHz/5 V; typ. 27 µW in stop mode (32 kHz sub-clock active) - enables multi-year battery life in always-on display applications. |
Pinout & Package
Package: PLQP0100KB-A - 100-pin, 0.5 mm pitch plastic quad flat pack, RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary digital power domain (4.5–5.5 V high-speed, 1.8–5.5 V low/mid-speed); AVSS isolated analog ground for ADC/DAC reference stability. |
| XIN / XOUT | Main clock oscillator interface | Connects external ceramic resonator or quartz crystal (up to 10 MHz); internal feedback resistor eliminates external component - simplifies BOM for timing-critical applications. |
| XCIN / XCOUT | Sub-clock oscillator interface | 32 kHz tuning-fork crystal only; enables RTC and ultra-low-power wake-up - no external clock source supported per datasheet. |
| COM0–COM3 / SEG0–SEG17 | LCD common/segment outputs | Direct-drive outputs supporting 1/2–1/4 duty; COM2/COM3 disabled at 1/2 duty - allows flexible display segmentation without external multiplexers. |
| P56/DA1 / P57/ADT/DA2 | Digital-to-analog converter outputs | Two independent 8-bit current-mode DAC outputs; DA2 doubles as A/D trigger input - enables synchronized analog signal generation and capture. |
| P44/RXD / P45/TXD | UART serial interface | Full-duplex asynchronous communication; supports host MCU or PC debug interface at configurable baud rates - essential for field firmware updates. |
| P50/PWM0 | Pulse-width modulation output | Single 8-bit PWM channel with programmable period; drives LED dimming or motor speed control - no external timer IC required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD controller | Eliminates external segment drivers for 4×40 displays - reduces PCB area and BOM cost in camera viewfinders and appliance panels. |
| Dual 8-bit D/A converters | Provides simultaneous DTMF tone generation and CTCSS signaling - enables voice-band communication features without external audio codecs. |
| 10-bit 8-channel A/D converter | Supports precision measurement of battery voltage, thermistor, and potentiometer inputs - ensures accurate power management and user interface calibration. |
| Software-configurable pull-up resistors | Enables key matrix scanning and interrupt wake-up without external resistors - simplifies mechanical keypad integration in consumer remotes and controls. |
| Three operating speed modes | High (fXIN/2), middle (fXIN/8), and low (fXCIN) modes allow dynamic power scaling - extends battery life while maintaining responsiveness during active use. |
Applications
| Camera Display Control | Home Appliance UI |
|---|---|
Use Scenario: Driving segmented LCD in digital still cameras for battery level, exposure settings, and menu navigation. IC Role / Device Role / Timing Role: Primary system MCU executing display refresh, button scan, and sensor readout at 100 Hz frame rate. Use Value: Integrated 4×40 LCD driver and 10-bit A/D eliminate external components - reduces bill-of-materials and board space by >12 mm². |
Use Scenario: Managing user interface and motor control in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Real-time coordinator of keypad input, relay timing, and PWM fan/motor control with sub-10 ms response latency. Use Value: 1.8–5.5 V supply range supports direct connection to 3.3 V or 5 V rails - avoids dedicated LDO and improves system efficiency. |
| Portable Audio Device | Consumer Remote Control |
Use Scenario: Generating DTMF tones and decoding IR commands in cordless phone handsets and VoIP adapters. IC Role / Device Role / Timing Role: Dual-role processor handling both audio signal synthesis (via DA1/DA2) and IR demodulation (via INT0/INT1). Use Value: On-chip DTMF/CTCSS DACs replace discrete op-amp networks - cuts analog section parts count by 7 and improves tone accuracy ±0.5%. |
Use Scenario: Scanning membrane keypad and driving low-power LCD in universal remote controls. IC Role / Device Role / Timing Role: Low-power supervisor managing wake-on-keypress, LCD update, and IR transmission burst timing. Use Value: 27 µW stop-mode current enables >5-year shelf life on CR2032 - meets IEC 62368-1 standby energy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LEAFB#30 | RL78/G13 core; 32 KB flash; no integrated LCD driver; 10-bit 8-ch A/D; 1.6–5.5 V supply | Requires external LCD driver; better suited for flash-based field-upgradable designs | Select when firmware updates are required and LCD complexity is low (≤2×16 segments) |
| HD64F38268FV | Same 740-family core; 48 KB mask ROM; 1536-byte RAM; identical pinout but PRQP0100JB-A (0.65 mm pitch) package | Compatible functionality but incompatible footprint - requires PCB redesign | Choose only if legacy board uses 0.65 mm QFP and Renesas confirms long-term availability |
Compared with R5F100LEAFB#30 and HD64F38268FV, the M3826AEFGP#U0 uniquely integrates full 4×40 LCD drive capability in a 0.5 mm pitch package, delivering lowest system-level BOM cost for fixed-function display applications where flash reprogrammability is unnecessary.
Availability
M3826AEFGP#U0 is available at Aetrix Electronics and suitable for camera display modules, home appliance control panels, portable audio interfaces, and universal remote controls requiring stable component supply over extended production lifecycles.
Supply support for M3826AEFGP#U0 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 Japanese semiconductor manufacturer formed in 2010 through merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and consumer markets.
The M3826AEFGP#U0 belongs to the 3826 Group (A version) - a family of single-chip 8-bit CMOS microcomputers designed specifically for cost-sensitive, LCD-equipped consumer electronics with integrated analog peripherals and ultra-low-power operation.
FAQ
What is the maximum operating frequency of the M3826AEFGP#U0?
The M3826AEFGP#U0 supports a maximum main clock frequency of 10 MHz via the XIN/XOUT pins. At this frequency, the minimum instruction execution time is 0.4 µs. The device also operates in middle-speed mode (fXIN/8) and low-speed mode (32 kHz sub-clock), enabling dynamic power scaling. All timing specifications assume VCC ≥ 4.5 V in high-speed mode.
Does the M3826AEFGP#U0 support in-circuit programming?
No, the M3826AEFGP#U0 uses mask ROM (indicated by "M" in part numbering), meaning program code is permanently embedded during wafer fabrication and cannot be reprogrammed in-system. Firmware updates require hardware replacement. For field-upgradable designs, consider Renesas' flash-based RL78 or RX families instead of the M3826AEFGP#U0.
What LCD configurations does the M3826AEFGP#U0 support?
The M3826AEFGP#U0 supports 1/2, 1/3, or 1/4 duty drive and 1/2 or 1/3 bias ratios. It provides 4 common outputs (COM0–COM3) and 40 segment outputs (SEG0–SEG39), enabling direct drive of segmented LCDs up to 4×40. COM2 and COM3 are unused at 1/2 duty; COM3 is unused at 1/3 duty - verified in the functional block diagram and pin description tables of the REJ03B0028-0200 datasheet.
Can the M3826AEFGP#U0 operate from a single 3.3 V supply?
Yes, the M3826AEFGP#U0 operates from 1.8 V to 5.5 V across all speed modes. At 3.3 V, it functions reliably in middle-speed mode (fXIN/8) and low-speed mode (32 kHz sub-clock), delivering typ. 27 µW stop-mode power. High-speed mode (10 MHz) requires VCC ≥ 4.5 V per the "Recommended operating conditions" table in the datasheet.
What are the key differences between M3826AEFGP#U0 and M3826AMFA-XXXGP?
The M3826AEFGP#U0 has 48 KB mask ROM and 1536-byte RAM, while M3826AMFA-XXXGP has 60 KB mask ROM and 2560-byte RAM. Both share identical PLQP0100KB-A packaging and peripheral sets (LCD, A/D, D/A, timers), but M3826AMFA-XXXGP supports larger firmware images and more runtime data buffers - making it suitable for feature-rich camera firmware where M3826AEFGP#U0 may exhaust ROM capacity.
M3826AEFGP#U0 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:
M3826AEFGP#U0 FAQ
1.How can I place an order for M3826AEFGP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for M3826AEFGP#U0 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 M3826AEFGP#U0 reliable?
The price and inventory of M3826AEFGP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M3826AEFGP#U0 is usually 5 days.
3.What payment methods are accepted for M3826AEFGP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M3826AEFGP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M3826AEFGP#U0?
M3826AEFGP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M3826AEFGP#U0 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 M3826AEFGP#U0?
For technical support, including M3826AEFGP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M3826AEFGP#U0 requirements.
6.How does Aetrix verify that M3826AEFGP#U0 is sourced from the original manufacturer or authorized distributors?
All M3826AEFGP#U0 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 M3826AEFGP#U0 meets industry standards.
7.What is the process for return or replacement of M3826AEFGP#U0?
All M3826AEFGP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with M3826AEFGP#U0, 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 M3826AEFGP#U0 part is unused and in its original packaging.
Return procedure for M3826AEFGP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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