"R-Car M1A" and "R-Car M1S" are SoCs for midrange systems.These device had high adoption rates in car infotainment systems like dashboard mounted car navigation systems. "R-Car M1 series " are developed for the mid-range systems and supports 1080 HD video and advanced graphics displays while offering low-power consumption.

  • Low power consumption while providing high performance multimedia through the integration of dedicated circuits for processing of 1080 HD video and audio
  • Dedicated power supply IC for use in a voltage regulator enables low-power consumption and quicker time to market
  • Realistic 3D images achieved with the latest 3D Graphics Processing Unit (GPU)
  • Arm Cortex-A9 and Renesas Electronics SH-4A architectures with hardware accelerators enabled by Renesas Electronics' high-quality software/middleware
System Block Diagram

R-Car M1A System Block Diagram

R-Car M1S System Block Diagram

Item R-Car M1A, M1S Specifications
Product No. M1A (R8A77781DA01BG), M1S (R8A77780DA01BG)
Power-supply voltage 3.3V(IO), 1.8(DDR2), 1.5 (DDR3), 1.2V(core)
CPU cores Arm® Cortex®-A9 (M1A Only) SH-4A core
operating frequency
800MHz 800MHz
NEON™ Media processing engine 1760 DMIPS (Effective)
On-chip RAM - ILRAM:16 Kbytes
OLRAM:16 Kbytes
Cache memory Instruction cache: 32 Kbyte
Operand cache: 32 Kbyte
Instruction cache: 32 Kbytes
Operand cache: 32 Kbytes
External SDRAM
bus interface
Address spage: 1 Gbyte
Maximum operating frequency: 533MHz
Data bus width: 32 bits
External memory bus Flash ROM and SRAM
Address space: 64 Mbytes × 6
Data bus width: 8 or 16 bits
Main on-chip
peripheral functions
GPU1: PowerVR SGX540 graphics engine (2D/3D)
GPU2: Renesas’ R-GP2 graphics engine (2D/3D)
Display/screen output × 2 channels (RGB)
Video input interface × 2 channels
Video decoder: VPU5HD2 (H.264/AVC, MPEG-4, MPEG-2, VC-1)
Video image processing (color conversion, image expansion, reduction, filter processing, expansion, edge emphasis function, etc.)
Contrast corrective function, color conversion function
JPU: JPEG still picture processing unit
Distortion compensation module (Imager renderer)
SD card host interfaces × 3 channels
Multimedia card interface
Sound processing units (SPU2F) × 2 channels
Serial audio/sound interfaces × 9 channels
USB 2.0 HS × 2 channels
GPS baseband processing module
FM multiple decoder
TS interface
IEBus™ bus interface × 2 channels
Ethernet MAC controller (IEEE802.3u), 10/100 Mbps transfers
Controller area network (CAN) interfaces × 2 channels
Media local bus (MLB) interface up to 50 Mbps
Serial communications interface (UART) × 6 channels
I2C bus interfaces × 4 channels
Serial peripheral interface (HSPI) × 3 channels
Remote control interface × 1 channel
DMA Controller × 37 channels
Timer × 9 channels
Analog to digital conversion machine interface (12 bits) × 1 channel
Interrupt controller (INTC)
Clock oscillator with built-in PLL
On chip debugging function
Low power
consumption mode
Sleep mode
Clock stop mode
DDR-SDRAM power supply backup mode
Package 472-pin BGA (21mm × 21mm)
ICE for Arm CPU available from different vendors
Renesas’ " E10A-USB " emulator for SH-4A CPU debugging.
Evaluation board A user system development reference platform offering the following features is also available, enabling the user to carry out efficient system development.
(1) Includes car information system oriented peripheral circuits, providing a user system actual device verification environment.
(2) Can be used as a software development tool for application software, etc.
(3) Allows easy addition of custom user functions.
Middleware Wide variety of middleware such as H.264, MPEG-2, MPEG-4, and WMV(Windows Media Video) for video, MP3, AAC, WMA, and aacPlus,etc for Audio is available to realise total system concept.

Arm, Cortex is a registered trademark of Arm Limited. NEON is a trademark of Arm Limited.
PowerVR, SGX is a trademark or a registered trademark of Imagination Technologies Ltd. (UK).
SuperH is a registered trademark or a trademark of Renesas Electronics Corporation in Japan, the United States, and other countries.
IEBus is a trademark of Renesas Electronics Corporation.
Microsoft and Windows are the registered trademarks or trademarks in the United States and other countries of Microsoft Corporation.
Other product name and service name under release are the trademarks or registered trademarks that all belong to each owner.

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