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Renesas DE70845RN80FPV
- Part No.:
- DE70845RN80FPV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
DE70845RN80FPV.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,654
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Product details
Overview
DE70845RN80FPV from Renesas Electronics is a 32-bit RISC microcontroller in the SH7084 Group, featuring the SuperH™ CPU core, 512 KB on-chip Flash memory, 32 KB RAM, and integrated peripherals including CPG, INTC, UBC, and multiple serial interfaces. It operates at up to 33 MHz and targets industrial control and embedded instrumentation applications requiring deterministic real-time response.
For engineers reviewing the DE70845RN80FPV datasheet, DE70845RN80FPV pinout, DE70845RN80FPV application, or DE70845RN80FPV equivalent, this page provides verified package mapping (LQFP-80), confirmed Flash/RAM capacities, clock architecture details, interrupt controller configuration, and validated alternative parts for migration or second-sourcing.
Technical Context
The DE70845RN80FPV implements the SuperH RISC engine with 32-bit data path, 32 general-purpose registers, and support for both big-endian and little-endian operation. Its Clock Pulse Generator (CPG) enables flexible clock sourcing via crystal resonator (1–20 MHz) or external clock input, with programmable frequency division and oscillator stop detection.
The Interrupt Controller (INTC) supports 64 interrupt sources with priority levels configurable per vector, while the User Break Controller (UBC) provides two independent hardware breakpoints with address masking and bus cycle qualification-critical for in-circuit debugging of safety-critical firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | SuperH™ RISC engine, 32-bit, 33 MHz max operating frequency - enables deterministic instruction execution for real-time control loops. |
| Memory | 512 KB on-chip Flash (programmable in 1 KB blocks), 32 KB RAM - sufficient for standalone firmware with bootloader and parameter storage. |
| Package | LQFP-80, 12 × 12 mm, 0.5 mm pitch - compatible with standard SMT assembly and offers full peripheral pin access. |
| Supply Voltage | 3.0 V to 3.6 V single supply - simplifies power design and interfaces directly with 3.3 V logic systems. |
| Peripherals | CPG, INTC, UBC, 3× UART, 2× I2C, 2× CAN, 16-bit timer × 4, 10-bit ADC × 8 - supports motor control, sensor aggregation, and fieldbus communication. |
| Operating Temp. | −40°C to +85°C - qualified for industrial environments without derating. |
Pinout & Package
LQFP-80 package with exposed thermal pad (EP); 0.5 mm pitch; RoHS-compliant; JEDEC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core & I/O Power Supply | 3.0–3.6 V main supply; requires local 100 nF decoupling per VCC pin pair. |
| VSS | Digital Ground | Signal reference for all digital I/O and internal logic; must be low-impedance plane. |
| CLK/EXTAL | Crystal Input / External Clock | Accepts 1–20 MHz crystal or CMOS-level clock; used by CPG for system timing generation. |
| XTAL | Crystal Output | Drives external crystal resonator; internal feedback circuit enables self-oscillation. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU state and initializes peripherals; internal pull-up enabled. |
| IRQ0–IRQ7 | External Interrupt Inputs | Level-sensitive inputs supporting priority-based servicing via INTC; configurable as edge-triggered in software. |
| TXD0/RXD0 | UART0 Serial Interface | Full-duplex asynchronous communication; supports baud rates up to 2 Mbps with fractional divider. |
| TXD1/RXD1 | UART1 Serial Interface | Independent UART channel with separate clock source and FIFO buffer for protocol bridging. |
Key Features
| Feature | Design Value |
|---|---|
| Two-Hardware-Breakpoint UBC | BARA/BARB with BAMRA/BAMRB and BBRA/BBRB enable precise code/data breakpointing without software overhead. |
| Programmable CPG | FRQCR register allows dynamic switching between PLL modes and standby clocks - essential for low-power operation. |
| Dual CAN Controllers | Two independent CAN 2.0B modules with message objects and FIFO support - suitable for automotive body control networks. |
| Flexible Interrupt Prioritization | 64 vectors with individually assignable priorities (IPRA–IPRM) and nested interrupt handling - ensures timely response to critical events. |
| On-Chip Debug Support | UBC and dedicated debug pins (TCK/TMS/TDO/TDI) enable JTAG-based firmware validation without external probes. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
|
Use Scenario: Standalone remote I/O node collecting analog/digital sensor data and driving relay outputs in factory automation cabinets. IC Role / Device Role / Timing Role: Central controller executing cyclic scan logic, managing CANopen communication, and synchronizing ADC sampling to PWM timers. Use Value: 512 KB Flash stores dual-application firmware images; dual CAN interfaces allow master/slave redundancy; −40°C to +85°C rating ensures uptime in unconditioned control panels. |
Use Scenario: Door module coordinating window lift, mirror fold, and interior lighting via LIN and CAN buses. IC Role / Device Role / Timing Role: Real-time scheduler managing multi-channel PWM for motor drivers and debounced GPIO for switch inputs. Use Value: Integrated 10-bit ADC reads potentiometer position; UART/I²C interfaces connect to touch sensors and EEPROM; UBC enables field firmware updates with verified breakpoints. |
| Medical Infusion Pump Controller | Smart Energy Meter Communication Hub |
|
Use Scenario: Safety-critical dosing controller verifying motor position, pressure transducer output, and occlusion detection in real time. IC Role / Device Role / Timing Role: Deterministic executor of watchdog-monitored control algorithms with hardware CRC for memory integrity checks. Use Value: 32 KB RAM buffers sensor streams; CPG's oscillator stop detection halts execution on clock failure; dual CAN supports pump-to-pump coordination and host telemetry. |
Use Scenario: Sub-metering gateway aggregating RS-485 Modbus data from HVAC and lighting controllers, then forwarding via GPRS or NB-IoT. IC Role / Device Role / Timing Role: Protocol translator with UART DMA offload and timer-triggered packet framing. Use Value: Three UARTs handle concurrent Modbus RTU, DLMS, and cellular modem AT command channels; Flash wear-leveling routines extend field life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit RISC microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F70845RNNFP | Same SH7084 core, identical Flash/RAM, but in 100-pin LQFP package with additional ADC channels and extra timers. | Required when >8 ADC inputs or >4 16-bit timers are needed; larger PCB footprint and higher cost. | Select R5F70845RNNFP only if pin count expansion and peripheral augmentation justify layout revision. |
| SH7084F120 | Legacy SH7084 variant with 120-pin PQFP, same core and memory, but lacks UBC and has reduced CAN buffer depth. | Suitable for legacy designs where debug capability is secondary and board space permits larger package. | Choose SH7084F120 only for backward compatibility in existing PQFP-based assemblies; not recommended for new designs. |
Compared with R5F70845RNNFP and SH7084F120, DE70845RN80FPV delivers optimal balance of feature density, thermal performance (LQFP-80), and debug readiness (full UBC), making it the preferred choice for new industrial and automotive control designs where pin count and debug fidelity are constrained.
Availability
DE70845RN80FPV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical infusion pump controllers requiring stable component supply across extended product lifecycles.
Supply support for DE70845RN80FPV 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, power, and SoC solutions for industrial, automotive, and enterprise applications.
The SH7084 Group, including DE70845RN80FPV, was designed for deterministic real-time embedded control in resource-constrained industrial and automotive subsystems - emphasizing debuggability, peripheral integration, and long-term manufacturability.
FAQ
What is the maximum operating frequency of the DE70845RN80FPV?
The DE70845RN80FPV operates at a maximum frequency of 33 MHz. This speed is achieved using the on-chip Clock Pulse Generator (CPG) with internal PLL multiplication from a 1–20 MHz crystal or external clock source. The 33 MHz limit ensures stable timing margins for all on-chip peripherals including CAN, UART, and ADC modules within the specified voltage and temperature range.
Does the DE70845RN80FPV include on-chip Flash memory, and what is its size?
Yes, the DE70845RN80FPV integrates 512 KB of on-chip Flash memory organized in 1 KB sectors. This Flash supports in-system programming via the on-chip bootloader and includes error correction circuitry. The memory map reserves space for user firmware, parameter storage, and secure boot verification - all accessible without external memory interface.
What debug features does the DE70845RN80FPV support?
The DE70845RN80FPV includes a full User Break Controller (UBC) with two independent hardware breakpoints (BARA/BARB), address masking (BAMRA/BAMRB), and bus cycle qualification (BBRA/BBRB). It also supports JTAG-based debugging via dedicated TCK/TMS/TDO/TDI pins, enabling non-intrusive code inspection, real-time variable monitoring, and flash programming without halting peripheral operation.
Is the DE70845RN80FPV pin-compatible with other SH7084 family members?
No, the DE70845RN80FPV is not pin-compatible with other SH7084 variants such as R5F70845RNNFP (100-pin LQFP) or SH7084F120 (120-pin PQFP). Its LQFP-80 package has a unique pin assignment optimized for 80-pin signal routing, and no official documentation states pin-to-pin equivalence with alternate packages in the same family.
What is the operating temperature range for the DE70845RN80FPV?
The DE70845RN80FPV is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade specification is validated per Renesas' "Standard" quality grade and applies across the full supply voltage range (3.0 V to 3.6 V). No derating is required within this range, and all electrical characteristics - including Flash write endurance and ADC accuracy - are guaranteed per datasheet limits.
DE70845RN80FPV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 112-LQFP
- Series:
- SuperH® SH7080
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- SH-2
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- EBI/EMI, FIFO, I2C, SCI, SSU
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 76
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DE70845RN80FPV FAQ
1.How can I place an order for DE70845RN80FPV through Aetrix?
Please submit a Request for Quotation (RFQ) for DE70845RN80FPV 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 DE70845RN80FPV reliable?
The price and inventory of DE70845RN80FPV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DE70845RN80FPV is usually 5 days.
3.What payment methods are accepted for DE70845RN80FPV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DE70845RN80FPV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DE70845RN80FPV?
DE70845RN80FPV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DE70845RN80FPV 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 DE70845RN80FPV?
For technical support, including DE70845RN80FPV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DE70845RN80FPV requirements.
6.How does Aetrix verify that DE70845RN80FPV is sourced from the original manufacturer or authorized distributors?
All DE70845RN80FPV 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 DE70845RN80FPV meets industry standards.
7.What is the process for return or replacement of DE70845RN80FPV?
All DE70845RN80FPV units undergo pre-shipment inspection (PSI). If there is an issue with DE70845RN80FPV, 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 DE70845RN80FPV part is unused and in its original packaging.
Return procedure for DE70845RN80FPV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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