High-end automotive microcontroller suitable for instrument cluster supporting basic or low-level 2D drawing.


The RH850/D1L microcontroller has up to 4 MB flash and up to 656 KB RAM and dedicated features for instrument cluster with basic or low level 2D drawing such as LCD bus interface, Display Controller, Sprite Engine and RAM wrapper.


Main Solutions

Key Features:

Pin Count 144-pin 144-pin 176-pin
Part Name R7F701401
CPU CPU System RH850G3M
CPU Frequency 120 MHz
Memory Protection Unit (MPU) Supported
Floating Point Unit (FPU) Supported
Memory caches Instruction cache 8 KB / 4-way associative
Non-CPU system memories - 16 KB / 4-way associative
Memory Program Flash 2 MB 4 MB
Data Flash 64 KB
Local RAM 256 KB 512 KB
Retention RAM 16 KB
Video RAM with Video RAM wrapper - 144 KB
External memory interfaces Serial Flash Memory Interface Bus width 4-bit 8-bit
Max. clock 40 MHz SDR : 120 MHz, DDR : 80 MHz
DMA 16 channels
Operating clock Main Oscillator 8 to 16 MHz
Low Speed Internal Oscillator Typ. 240 kHz
High Speed Internal Oscillator Typ. 8 MHz
Sub Oscillator Typ. 32.768 kHz
Spread-spectrum PLL0 Max. 480 MHz
PLL1 Fixed to 480 MHz
I/O port 103 126
A/D converter 16 channels, 12-bit resolution
Timer 16-bit Timer Array Unit B (TAUB) 3 units (16 channels / unit)
32-bit Timer Array Unit J (TAUJ) 1 unit (4 channels / unit)
Timer for Operating System (OSTM) 2 units (32-bit resolution, 1 channel / unit)
32-bit Always-On-Area Timer (AWOT) 1 unit (1 channel / unit)
Real Time Clock (RTCA) Supported
Window Watchdog Timer A (WDTA) 2 units
PWM Generators with Diagnostic 1 unit (12-bit resolution, 24 PWM generators, 12 with diagnostic capability)
Communication interface Clocked Serial Interface G (CSIG) 4 channels
Queued Clocked Serial Interface H (CSIH) 2 channels
CAN Interface (RS-CAN) 3 channels (total 192 message buffers) : Only for R7F701401, R7F701402, R7F701403
CAN Interface (RSCANFD) 3 channels (total 192 message buffers) : Only for R7F701421, R7F701422, R7F701423
LIN/UART Interface (RLIN3) 4 channels
I2C Interface (RIIC) 2 channels
External Interrupt Maskable 11
Non-maskable (NMI) 1
Audio Sound Generator (SG) 5 units
PCM-PWM Converter (PCMP) 1 unit
I2S Interface (SSIF) 2 units (1 channel / unit)
Video and Graphics Video output Channels - 1 channel (480 x 320 pixels, 10 MHz pixel clock, RGB666, 4 layers)
Interface - LVTTL
RLE decoding - Supported
Sprite layer - 3 x 16 sprites for 3 output layers
Timing Controller(TCON) - 3 programmable signals 7 programmable signals
Other functions LCD Bus Interface (LCBI) 18-bit output, max. 10 MHz
Clock Monitors (CLMA) For Main oscillator, Low speed internal oscillator, High speed internal oscillator, PLL0, PLL1
Data CRC (DCRA) Supported
Power-On-Clear (POC) Supported
Intelligent Stepper Motor Driver (ISM), incl. zero point detection for each channel 1 unit, 6 channels
Error Collection Coding (ECC) For Code Flash, Data Flash, Local RAM, Retention RAM, Video RAM, RS-CAN RAM, Caches tag/data RAMs
Intelligent Cryptographic Unit (ICU-S2) Supported
On-Chip Debug (OCD) Supported
Boundary Scan Supported
Voltage supply Internal logic Always-On-Area 3.3 V, 5 V via on-chip voltage regulator
Isolated-Area 3.3 V, 5 V via on-chip voltage regulator
I/O buffers GPIO 3.3 V, 5 V
A/D Converter supplies Nominal 3.3 V, 5 V
Package LQFP 20 x 20
(0.5 mm)
LQFP 24 x 24
(0.5 mm)

Pin Count / Memory Size Lineup:

Program Flash



Block Diagram:

RH850/D1L Block Diagram

You can find an explanation of orderable part numbers here.


Resources for Software and Hardware

Title Description
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e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.


Software Design Support

Title Description
CS+ This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation.
e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
E2 emulator This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the CAN communication time measurement solution by systems under development.
E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).


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