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{{renesas title|R-Car E2}}
 
{{renesas title|R-Car E2}}
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{{mpu}}
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{{chip
 +
|name=R-Car E2
 +
|image=r-car e2.jpg
 +
|designer=Renesas
 +
|designer 2=ARM Holdings
 +
|manufacturer=TSMC
 +
|model number=E2
 +
|part number=R8A7794
 +
|market=Embedded
 +
|first announced=October 22, 2014
 +
|first launched=June, 2016
 +
|family=R-Car
 +
|series=2nd Gen
 +
|frequency=1,000 MHz
 +
|frequency 2=780 MHz
 +
|isa=ARMv7
 +
|isa family=ARM
 +
|isa 2=SuperH
 +
|isa 2 family=SuperH
 +
|microarch=Cortex-A7
 +
|microarch 2=SH-4A
 +
|core name=Cortex-A7
 +
|core name 2=SH-4A
 +
|process=28 nm
 +
|technology=CMOS
 +
|word size=32 bit
 +
|core count=3
 +
|thread count=3
 +
|max cpus=1
 +
|max memory=2 GiB
 +
|v core=1.0 V
 +
|v io=3.3 V
 +
|v io 2=1.8 V
 +
|package module 1={{packages/renesas/fcbga-501}}
 +
}}
 +
'''R-Car E2''' is an entry-level embedded [[tri-core]] SoC designed by [[Renesas]] for the automotive industry and introduced in late 2014. The E2 incorporates two {{armh|Cortex-A7}} cores operating at 1 GHz along with a {{renesas|SH-4A}} core operating at 780 MHz for real-time processing. This chip includes an [[Imagination Technologies|Imagination]] {{imgtec|PowerVR SGX540}} [[GPU]] operating at 260 MHz and supports up to 2 GiB of dual-channel DDR3-1333 memory.
 +
 
 +
== Cache ==
 +
{{main|arm holdings/microarchitectures/cortex-a7#Memory_Hierarchy|l1=Cortex-A7 § Cache}}
 +
{{cache size
 +
|l1 cache=192 KiB
 +
|l1i cache=96 KiB
 +
|l1i break=3x32 KiB
 +
|l1d cache=96 KiB
 +
|l1d break=3x32 KiB
 +
|l2 cache=512 KiB
 +
|l2 break=1x512 KiB
 +
}}
 +
 
 +
== Memory controller ==
 +
{{memory controller
 +
|type=DDR3-1333
 +
|ecc=No
 +
|max mem=2 GiB
 +
|controllers=1
 +
|channels=2
 +
|width=32 bit
 +
|max bandwidth=9.93 GiB/s
 +
|bandwidth schan=4.97 GiB/s
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|bandwidth dchan=9.93 GiB/s
 +
}}
 +
 
 +
== Expansions ==
 +
* Flash ROM and SRAM, Data bus width: 8 or 16 bits
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* USB 2.0 host interface × 2 ports (wPHY)
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* SD host interface × 3 ch (SDXC, UHS-I)
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* Multimedia card interface × 1 ch
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* I²C bus interface × 8 ch
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* Serial communication interface (SCIF) × 18 ch
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* Quad serial peripheral interface (QSPI) × 1 ch (for boot)
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* Clock-synchronized serial interface (MSIOF) × 3 ch (SPI/IIS)
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* Ethernet AVB controller (IEEE802.1BA/802.1AS/802.1Qav/IEEE1722, GMII/MII, without PHY)
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* Ethernet controller (IEEE802.3u, RMII, without PHY)
 +
 
 +
== Graphics ==
 +
{{integrated graphics
 +
| gpu                = PowerVR SGX540
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| designer            = Imagination Technologies
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| execution units    = 1
 +
| max displays        = 2
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| frequency          = 260 MHz
 +
}}
 +
 
 +
== Features ==
 +
{{arm features
 +
|thumb=No
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|thumb2=Yes
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|thumbee=Yes
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|vfpv1=No
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|vfpv2=No
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|vfpv3=No
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|vfpv3-d16=No
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|vfpv3-f16=No
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|vfpv4=Yes
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|vfpv4-d16=No
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|vfpv5=No
 +
|neon=Yes
 +
|jazelle=No
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|wmmx=No
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|wmmx2=No
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}}
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 +
== Block Diagram ==
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::[[File:r-car e2 block.png|750px]]
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== Dev Board ("ALT") ==
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[[File:R-Car E2 dev board.png|right|200px]]
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* 210 mm x 160 mm
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* 68 MB serial flash & 8 GByte eMMC memory
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* 1 GB DDR3-DRAM-1333; 2 x 16-bit configuration
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* RS-232C, UART, 2x USB, SD, LAN, CAN
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* EtherAVB PHY Connetor
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* Video in (2ch)
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* RGB and LVDS display-out
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* switches, LEDs, I/O expansion headers

Latest revision as of 15:32, 13 December 2017

Edit Values
R-Car E2
r-car e2.jpg
General Info
DesignerRenesas,
ARM Holdings
ManufacturerTSMC
Model NumberE2
Part NumberR8A7794
MarketEmbedded
IntroductionOctober 22, 2014 (announced)
June, 2016 (launched)
General Specs
FamilyR-Car
Series2nd Gen
Frequency1,000 MHz, 780 MHz
Microarchitecture
ISAARMv7 (ARM), SuperH (SuperH)
MicroarchitectureCortex-A7, SH-4A
Core NameCortex-A7, SH-4A
Process28 nm
TechnologyCMOS
Word Size32 bit
Cores3
Threads3
Max Memory2 GiB
Multiprocessing
Max SMP1-Way (Uniprocessor)
Electrical
Vcore1.0 V
VI/O3.3 V, 1.8 V
Packaging
PackageFCBGA-501 (BGA)
Dimension21 mm x 21 mm
Pitch0.80 mm
Ball Count501
InterconnectBGA-501

R-Car E2 is an entry-level embedded tri-core SoC designed by Renesas for the automotive industry and introduced in late 2014. The E2 incorporates two Cortex-A7 cores operating at 1 GHz along with a SH-4A core operating at 780 MHz for real-time processing. This chip includes an Imagination PowerVR SGX540 GPU operating at 260 MHz and supports up to 2 GiB of dual-channel DDR3-1333 memory.

Cache[edit]

Main article: Cortex-A7 § Cache

[Edit/Modify Cache Info]

hierarchy icon.svg
Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.
L1$192 KiB
196,608 B
0.188 MiB
L1I$96 KiB
98,304 B
0.0938 MiB
3x32 KiB  
L1D$96 KiB
98,304 B
0.0938 MiB
3x32 KiB  
L2$512 KiB
0.5 MiB
524,288 B
4.882812e-4 GiB
  1x512 KiB  

Memory controller[edit]

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR3-1333
Supports ECCNo
Max Mem2 GiB
Controllers1
Channels2
Width32 bit
Max Bandwidth9.93 GiB/s
10,168.32 MiB/s
10.662 GB/s
10,662.256 MB/s
0.0097 TiB/s
0.0107 TB/s
Bandwidth
Single 4.97 GiB/s
Double 9.93 GiB/s

Expansions[edit]

  • Flash ROM and SRAM, Data bus width: 8 or 16 bits
  • USB 2.0 host interface × 2 ports (wPHY)
  • SD host interface × 3 ch (SDXC, UHS-I)
  • Multimedia card interface × 1 ch
  • I²C bus interface × 8 ch
  • Serial communication interface (SCIF) × 18 ch
  • Quad serial peripheral interface (QSPI) × 1 ch (for boot)
  • Clock-synchronized serial interface (MSIOF) × 3 ch (SPI/IIS)
  • Ethernet AVB controller (IEEE802.1BA/802.1AS/802.1Qav/IEEE1722, GMII/MII, without PHY)
  • Ethernet controller (IEEE802.3u, RMII, without PHY)

Graphics[edit]

[Edit/Modify IGP Info]

screen icon.svg
Integrated Graphics Information
GPUPowerVR SGX540
DesignerImagination Technologies
Execution Units1Max Displays2
Frequency260 MHz
0.26 GHz
260,000 KHz

Features[edit]

[Edit/Modify Supported Features]

Cog-icon-grey.svg
Supported ARM Extensions & Processor Features
Thumb-2Thumb-2 Extension
ThumbEEThumb Execution Environment Extension
VFPv4Vector Floating Point (VFP) v4 Extension
NEONAdvanced SIMD extension

Block Diagram[edit]

r-car e2 block.png

Dev Board ("ALT")[edit]

R-Car E2 dev board.png
  • 210 mm x 160 mm
  • 68 MB serial flash & 8 GByte eMMC memory
  • 1 GB DDR3-DRAM-1333; 2 x 16-bit configuration
  • RS-232C, UART, 2x USB, SD, LAN, CAN
  • EtherAVB PHY Connetor
  • Video in (2ch)
  • RGB and LVDS display-out
  • switches, LEDs, I/O expansion headers
Retrieved from "https://en.wikichip.org/w/index.php?title=renesas/r-car/e2&oldid=71190"
Facts about "R-Car E2 - Renesas"
RDF feed
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
R-Car E2 - Renesas#package +
base frequency1,000 MHz (1 GHz, 1,000,000 kHz) + and 780 MHz (0.78 GHz, 780,000 kHz) +
core count3 +
core nameCortex-A7 + and SH-4A +
core voltage1 V (10 dV, 100 cV, 1,000 mV) +
designerRenesas + and ARM Holdings +
familyR-Car +
first announcedOctober 22, 2014 +
first launchedJune 2016 +
full page namerenesas/r-car/e2 +
has ecc memory supportfalse +
instance ofmicroprocessor +
integrated gpuPowerVR SGX540 +
integrated gpu base frequency260 MHz (0.26 GHz, 260,000 KHz) +
integrated gpu designerImagination Technologies +
integrated gpu execution units1 +
io voltage3.3 V (33 dV, 330 cV, 3,300 mV) + and 1.8 V (18 dV, 180 cV, 1,800 mV) +
isaARMv7 + and SuperH +
isa familyARM + and SuperH +
l1$ size192 KiB (196,608 B, 0.188 MiB) +
l1d$ size96 KiB (98,304 B, 0.0938 MiB) +
l1i$ size96 KiB (98,304 B, 0.0938 MiB) +
l2$ size0.5 MiB (512 KiB, 524,288 B, 4.882812e-4 GiB) +
ldateJune 2016 +
main imageFile:r-car e2.jpg +
manufacturerTSMC +
market segmentEmbedded +
max cpu count1 +
max memory2,048 MiB (2,097,152 KiB, 2,147,483,648 B, 2 GiB, 0.00195 TiB) +
max memory bandwidth9.93 GiB/s (10,168.32 MiB/s, 10.662 GB/s, 10,662.256 MB/s, 0.0097 TiB/s, 0.0107 TB/s) +
max memory channels2 +
microarchitectureCortex-A7 + and SH-4A +
model numberE2 +
nameR-Car E2 +
packageFCBGA-501 +
part numberR8A7794 +
process28 nm (0.028 μm, 2.8e-5 mm) +
series2nd Gen +
smp max ways1 +
supported memory typeDDR3-1333 +
technologyCMOS +
thread count3 +
word size32 bit (4 octets, 8 nibbles) +