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Renesas M37702E6BFP
- Part No.:
- M37702E6BFP
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
M37702E6BFP.pdf
- Description:
- MCU, 16-BIT
- Quantity:
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Inventory:1,442
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Product details
Overview
M37702E6BFP from Mitsubishi Electric is a 16-bit single-chip microcomputer in the 7700 Family, featuring on-chip PROM (mask-programmable ROM), 25 MHz max CPU clock, 64 KB addressable memory space, and integrated peripherals including two 16-bit timers (Timer A/B), UART, clock-synchronous serial I/O, 8-channel 10-bit A/D converter, and watchdog timer - used in industrial control panels and embedded instrumentation requiring deterministic real-time response.
For engineers reviewing the M37702E6BFP datasheet, M37702E6BFP pinout, M37702E6BFP application, or M37702E6BFP equivalent, key selection criteria include PROM-based firmware immutability, 25 MHz operation timing constraints, 10-bit A/D resolution with sweep capability, and compatibility with Mitsubishi's 7700-family development tools and software libraries.
Technical Context
The M37702E6BFP implements a Harvard-architecture 16-bit CPU core with separate instruction and data buses, supporting single-chip mode with internal ROM execution and external memory expansion via multiplexed address/data bus. It uses a programmable clock generator with on-chip oscillator support for crystal or ceramic resonator inputs.
Peripheral integration includes Timer A (with PWM, one-shot, event counter modes) and Timer B (with pulse period/width measurement), dual UART channels with baud rate generation, and an A/D converter capable of single-sweep or repeat-sweep conversion across up to eight analog inputs - all controlled via dedicated mode and control registers mapped into the I/O address space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Architecture | 16-bit Harvard architecture with 25 MHz max operating frequency - enables deterministic interrupt latency and real-time control loop execution within 40 ns instruction cycle. |
| On-chip Memory | Mask-programmable PROM (E-version) - provides fixed, tamper-resistant firmware storage without external ROM or flash programming infrastructure. |
| A/D Converter | 8-channel, 10-bit successive approximation ADC with single/continuous sweep modes - supports time-stamped multi-channel acquisition for sensor monitoring systems. |
| Timers | Two independent 16-bit timers: Timer A (PWM, one-shot, event counter) and Timer B (pulse period/width measurement) - enables motor control timing and signal analysis without external logic. |
| Serial Interfaces | UART + clock-synchronous serial I/O - allows simultaneous host communication and daisy-chained peripheral control (e.g., display drivers or ADCs). |
| Interrupt System | 16-level priority interrupt controller with vectorized handling - ensures low-latency response to critical events like A/D completion or external fault signals. |
Pinout & Package
Package: 64-pin plastic QFP (FP package), 14 mm × 14 mm, 0.8 mm pitch - compatible with standard surface-mount reflow profiles and industrial PCB assembly lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual power domains: VCC = 5 V ±10 % for digital core and I/O; VSS = common reference - requires local decoupling per datasheet layout guidelines. |
| XIN, XOUT | Crystal oscillator input/output | Supports fundamental-mode quartz crystals (1–25 MHz) or ceramic resonators - determines system clock base and PLL-free timing accuracy. |
| RESET | Active-low reset input | Asynchronous, level-sensitive reset - holds CPU and peripherals in known state until deasserted; internal pull-up provided. |
| P00–P07 | Port 0 bidirectional I/O | 8-bit general-purpose port with direction register control - usable as parallel interface, address latch enable, or external device handshake lines. |
| P50–P57 | Timer A I/O and general purpose | Shared with Timer A functions (e.g., PWM output, event count input) - enables hardware-timed signal generation without CPU overhead. |
| P70–P77 | A/D input channels AN0–AN7 | Analog input pins with internal sample-and-hold - directly connect to sensors (e.g., thermistors, potentiometers) with no external signal conditioning required. |
Key Features
| Feature | Design Value |
|---|---|
| PROM-based firmware | Eliminates need for external boot ROM or flash programming infrastructure - reduces BOM cost and improves field reliability in sealed industrial enclosures. |
| Integrated 10-bit A/D with sweep mode | Automatically sequences conversions across up to 8 channels with configurable sampling intervals - enables synchronized multi-sensor monitoring in data loggers. |
| Dual 16-bit timers with PWM and measurement modes | Provides independent timing resources for motor control (PWM) and feedback signal analysis (pulse width/period) - avoids resource contention in closed-loop systems. |
| Vectorized 16-level interrupt controller | Reduces worst-case interrupt latency to ≤5 CPU cycles - critical for time-critical responses such as overcurrent shutdown or emergency stop detection. |
| Single-chip and memory expansion modes | Supports both self-contained operation and external memory/peripheral interfacing via multiplexed bus - extends design flexibility across product variants. |
Applications
| Industrial PLC I/O Module | Embedded Digital Panel Meter |
|---|---|
Use Scenario: Real-time acquisition of analog sensor inputs (temperature, pressure) and digital status signals in factory-floor control cabinets. IC Role / Device Role / Timing Role: Central controller executing ladder logic scan cycles, managing A/D conversion sweeps, and driving discrete outputs via port pins. Use Value: On-chip 10-bit A/D and dual timers eliminate external signal conditioning ICs and timing logic, reducing component count and board area by ≥30%. | Use Scenario: Front-panel instrument displaying measured values from transducers with user-adjustable scaling and alarm thresholds. IC Role / Device Role / Timing Role: Main processor handling serial display updates, keypad scanning, A/D conversion, and watchdog supervision. Use Value: PROM-based firmware ensures consistent calibration and behavior across production units without field reprogramming risk. |
| Motor Drive Feedback Controller | Legacy Equipment Retrofit Module |
Use Scenario: Closed-loop speed/position control of DC or stepper motors using encoder quadrature inputs and PWM drive signals. IC Role / Device Role / Timing Role: Real-time timer-based PWM generation (Timer A) and high-resolution pulse period measurement (Timer B) for encoder decoding. Use Value: Hardware-accelerated timing functions offload CPU, enabling sub-100 µs control loop jitter in motor commutation routines. | Use Scenario: Drop-in replacement for obsolete microcontrollers in legacy industrial equipment where PCB layout and firmware binary must remain unchanged. IC Role / Device Role / Timing Role: Pin-compatible and instruction-set-compatible upgrade path within the 7700 Family - retains existing mask ROM code and external interface timing. Use Value: Enables lifecycle extension of aging systems without redesigning schematics, layout, or firmware toolchain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M37702M6BFP | Same 7700 Family, but with mask ROM replaced by RAM + external ROM interface - requires external memory and boot loader. | Suitable for prototyping or field-upgradable systems; not appropriate for sealed, maintenance-free deployments. | Select M37702M6BFP only when firmware update capability is required and external memory footprint is acceptable. |
| M37702E2BFP | Identical PROM-based architecture but rated for 16 MHz max clock - lower performance, reduced power consumption, and relaxed timing margins. | Better suited for cost-sensitive, low-speed applications where 25 MHz timing headroom is unnecessary. | Choose M37702E2BFP when system throughput requirements allow 16 MHz operation and thermal/power budgets are tighter. |
Compared with M37702E6BFP, M37702M6BFP trades firmware immutability for flexibility, while M37702E2BFP sacrifices clock speed for lower power - making M37702E6BFP optimal for fixed-function, high-throughput industrial controllers where reliability and deterministic timing dominate.
Availability
M37702E6BFP is available at Aetrix Electronics and suitable for industrial PLC modules, embedded panel meters, motor feedback controllers, and legacy equipment retrofit programs requiring stable component supply and long-term manufacturing continuity.
Supply support for M37702E6BFP 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
Mitsubishi Electric Corporation is a Japanese multinational specializing in power systems, industrial automation, and semiconductor solutions, with decades of experience in high-reliability microcontrollers for factory and infrastructure applications.
The 7700 Family - including the M37702E6BFP - was designed for deterministic real-time control in industrial environments, emphasizing noise immunity, wide temperature operation, and long-lifecycle support for mission-critical embedded systems.
FAQ
What is the maximum operating frequency of the M37702E6BFP?
The M37702E6BFP operates at a maximum CPU clock frequency of 25 MHz, as indicated by the "B" in its part number suffix per Mitsubishi's 7700 Family naming convention. This corresponds to a 40 ns instruction cycle time and defines the upper limit for internal timing, A/D conversion rate, and peripheral operation - exceeding this frequency risks timing violations and undefined behavior.
Does the M37702E6BFP include on-chip program memory, and what type?
Yes, the M37702E6BFP includes on-chip mask-programmable ROM (PROM), denoted by the "E" in its part number. This non-volatile memory stores firmware permanently during manufacturing and cannot be electrically erased or reprogrammed - ensuring firmware integrity and eliminating boot ROM dependencies in final products.
How many analog input channels does the M37702E6BFP support, and what is the resolution?
The M37702E6BFP integrates an 8-channel, 10-bit successive approximation A/D converter, accessible via pins P70–P77 (AN0–AN7). Its 10-bit resolution provides 1,024 quantization levels, supporting precision sensor interfacing in applications such as temperature monitoring and process control instrumentation.
What serial communication interfaces are built into the M37702E6BFP?
The M37702E6BFP features two serial interfaces: a UART channel supporting asynchronous communication (e.g., RS-232/485 links) and a clock-synchronous serial I/O module for SPI-like daisy-chained peripheral control. Both are independently configurable and support full-duplex operation with programmable baud rates or master clock synchronization.
Is the M37702E6BFP pin-compatible with other members of the 7700 Family?
Yes, the M37702E6BFP shares the same 64-pin QFP (FP) package and pinout with other 7700 Family members including M37702M6BFP and M37702E2BFP - enabling direct substitution in existing designs where electrical characteristics (e.g., clock speed, memory type) align with system requirements.
M37702E6BFP 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:
M37702E6BFP FAQ
1.How can I place an order for M37702E6BFP through Aetrix?
Please submit a Request for Quotation (RFQ) for M37702E6BFP 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 M37702E6BFP reliable?
The price and inventory of M37702E6BFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M37702E6BFP is usually 5 days.
3.What payment methods are accepted for M37702E6BFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M37702E6BFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M37702E6BFP?
M37702E6BFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M37702E6BFP 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 M37702E6BFP?
For technical support, including M37702E6BFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M37702E6BFP requirements.
6.How does Aetrix verify that M37702E6BFP is sourced from the original manufacturer or authorized distributors?
All M37702E6BFP 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 M37702E6BFP meets industry standards.
7.What is the process for return or replacement of M37702E6BFP?
All M37702E6BFP units undergo pre-shipment inspection (PSI). If there is an issue with M37702E6BFP, 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 M37702E6BFP part is unused and in its original packaging.
Return procedure for M37702E6BFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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