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R-Car M1A/S


"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

R-Car M1S


ItemR-Car M1A, M1S Specifications
Product No.M1A(R8A77781DA01BG), M1S(R8A77780DA01BG)
Power-supply voltage3.3V(IO), 1.8(DDR2), 1.5(DDR3), 1.2V(core)
CPU coresArm ® Cortex ® -A9 (M1A Only)SH-4A core
operating frequency
NEON™ Media processing engine1760 DMIPS(Effective)
On-chip RAM-ILRAM:16 Kbytes
OLRAM:16 Kbytes
Cache memoryInstruction cache: 32 Kbyte
Operand cache: 32 Kbyte
Instruction cache: 32 Kbytes
Operand cache: 32 Kbytes
External SDRAM
bus interface
  • DDR3-SDRAM(DDR1066) or DDR2-SDRAM(DDR800)
  • 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
  • I 2 C 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
Package472-pin BGA (21mm × 21mm)
  • ICE for Arm CPU available from different vendors
  • Renesas’ " E10A-USB " emulator for SH-4A CPU debugging.
Evaluation boardA 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.
MiddlewareWide 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.