45055A_SmartEnergyGuide_E_A4_093013_Web.pdf

Atmel Smart Energy Solution Guide
Smart Energy Applications
It’s all about energy management
• Smart Grid
• Industrial Lighting and Automation
• Home Automation
• Street Lighting
• Solar Energy
• PHEV Charging Stations
The market for energy, water, and gas metering systems is rapidly changing, driven by
new environmental and conservation concerns and regulations. Traditional standalone
meters are now being replaced by complex networked systems that utilize a variety
of communication methods. To meet the needs of this evolving smart grid, metering
developers need solutions that can provide:
• Leading Edge Connectivity
• Best-in-class Metrology
• Integration & Flexibility
• Advanced Security
2
© 2013 / www.atmel.com
Atmel Smart Energy Solutions Guide
Atmel Smart Energy Solutions
Not just a Chip, but a Platform
Atmel® addresses the needs of the smart energy market with application-specific, as well as standard microcontroller,
microprocessor, security, memory, wireless and power-line connectivity devices. The application-specific portfolio is
defined from the ground up to offer designers best-in-class feature sets and performance in various classes of equipment
used in the smart grid.
UTI L I TY
WAN
Home Area Network
802.15.4 Zigbee
Proprietary PLC
Neighborhood, Metro
Neighborhood, Metro
802.15.4g
PRIME, G3-PLC,
P1901.2
802.15.4g
PRIME, G3-PLC, P1901.2
802.15.4 Zigbee
Figure 1. Smart Grid Equipment and Governing Communications Standards
Home Area
Network Equipment
Energy Gateway
Data Concentrator
Electricity Meter
Gas & Water Meter
SAM4C
SAM4L
RF233
RF212B
SAM4CP
M90E32
SAMA5
SAM4C
RF233
RF212B
RF215
SAM4CP
SAMA5
SAM4C/CM
SAM4CP
RF215
M90E32/36
SAM4C/CM
SAM4CP
SAM4L
M90EXX
RF233
RF212B
RF215
SAM4C
SAM4L
SAMD
RF233
RF212B
RF215
Table 1. Atmel Platform Products by Equipment Type
Atmel Smart Energy Solutions Guide
3
Atmel Smart Metering Platform
Today’s smart meter architect demands various levels of integration depending on system architecture partitioning,
project timelines, and the level of flexibility needed to address various utility and geographical requirements. The Atmel
platform provides a unique multi-level architecture built around the same multi-core architecture as outlined below.
Various devices integrate the building blocks of the smart meter, namely, Metrology sensing (ADC), Metrology DSP,
application, communication, and security processing, as well as connectivity to home area and neighborhood area
networks.
Metrology
DSP
ADC
M90E25
1Φ Metrology AFE
Application
Processor
Protocol/
Crypto
Processor
Phy(PLC, RF)
SAM4L
SAM D20
etc.
SAM4L
SAM5
etc.
ATPL230
PRIME+
SAM4CP Series
M90E32AS/36A
PRIME+, G3, 1901.2
3Φ Metrology AFE
ATSENSE101
1Φ Metrology ADC
SAM4C8/16/32
ATSENSE301
Dual core secure ASSP
Sofrware Metrology Option (External ADC)
3Φ Metrology ADC
RF212B
Sub-Ghz 802.15.4
RF233
2.4 GHz 802.15.4
SAM4CM8/16/32
Dual core secure ASSP
Integrated Metrology (1Φ, 3Φ)
RF215
Dual sub-1
2.4 GHz 15.4g
Figure 2. Atmel Smart Metering Platform
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© 2013 / www.atmel.com
Atmel Smart Energy Solutions Guide
Atmel Advantage
A new platform with many differentiators.
• Best-in-class Metrology
• Leading-Edge Connectivity
• Low power 802.15.4/4g wireless devices
• Dynamic range of up to 6000:1
• Field proven, Low power PLC(PRIME)
• 25M units shipped since 90’s
• Integration & Flexibility
• Broad MCU Portfolio
• Flexible (SW or HW) metrology
• Large array of SAMD, SAM4 and SAM5 solutions
• Multi-standard Wireless and PLC solutions
• Best-in-class tools from Atmel, IAR, Keil
• Advanced cryptography
Smart Metering Products
At the core of Atmel’s smart energy platform is the
SAM4C series of products starting with SAM4C16 and
SAM4C8 system-on-chip solutions for smart energy
applications built around two high performance 32-bit
ARM® Cortex®-M4 RISC processors. These devices
operate at a maximum speed of 120 MHz and feature
up to 2Mbyte of embedded Flash, 304 Kbytes of SRAM,
and on-chip cache for each core.
Temp
Sensor
M90Exx
Metrology
M90Exx
AFE
Metrology
M90Exx
AFE
Metrology
AFE
Soft Metrology
Options:
Embedded
Metrology
ADC
OR
ATSENSE
Metrology
ADC
The dual ARM Cortex -M4 architecture allows for
integration of application layer, communications layers,
and metrology functions in a single device. It has options
for integrated software metrology or external hardware
metrology AFE (analog front end) as well as integrated
or external power-line carrier (PLC) physical layer
solution. It’s a modular approach that is sure to meet
various design needs.
LCD Driver
(50x6)
PIO(74-91)
SRAM
48KB/96KB
SRAM
128KB/256KB
USART(5)
UART(2)
Cortex-M4F
Cortex-M4
Metrology/Other
App/Comm.
Flash
512K-2MB
USB
(2MB ver. only)
RF TRX
Options
Integrated
PLC Options:
External
PLC Phy
Options
PRIME,G3,IEEE,
SFSK
OR
External ADC
EBI(16bit)
PWM(4)
Timers (6)
AES, CPKCC,
ICM (SHA),
TRNG
SPI(6)
TWI(2)
RTC
(<1uA)
Figure 3. SAM4C Platform
Atmel Smart Energy Solutions Guide
5
TDI
System Peripherals
Core
Voltage
Reg
TMS
TCK
Serial Wire and JTAG Debug Port
AHB-AP
LDO
TD0
AHB-AP
SRAM2
8KB
MPU
DSP
FPU
DSP
NVIC
TICK
NVIC
TICK
16k(C32)
WDT
LCD
Voltage
Reg
Unique
ID
Flash
Cortex-M4
(Core 2)
XTAL
3-20 MHz
0.5/1M
2M(C32)
ROM
IAP & FFPI
SAM-BA Boot
Crypto Lib
4/8/12 MHz
RC
OSC
Cortex-M4
(Core 1)
CPKCC
SRAM0
128k
256k(C32)
SRAM1
16KB
32k(C32)
ICM
(SHA)
Cache
Cache
2 x PLL
POR
RTC
Time
Stamp
RTT
Tamper
RC OSC
32kHz
Supply
Contr
XTAL
32kHz
Async
Bridge
AHB Matrix (Mx0)
PMC
BOD
Peripheral
DMA
AHB to APB Bridge 0
PDC
10-bit
ADC
6ch
Backup domain
PDC
<74
GPIO
6-ch
16-bit
Timer
x5
USART
<104
(C32)
PDC
x2
UART
PDC
PDC
x2
TWI
AHB Matrix (Mx1)
6
SPI
AHB to APB Bridge 0
PDC
50 x 6
Segment
LCD
TRNG,
AES
Optional
Metrology
ADC
1/3ph
F/S
USB
IPC0
(C32)
PWM
x1
UART
Optical
TRX
IPC1
C32 devices have 2M flash, full speed USB, more GPIO, more RAM
Figure 4. SAM4C Block diagram
Flash
SRAM
Package
GPIO
PWM
UART+USART
SPI
ADC
Metrology AFE
Segment LCD
USB FS
Timer
TWI
SAM4C8
SAM4C16
512KB
1MB
SAM4C32C
SAM4C32E
SAM4CMP8/
SAM4CMS8
SAM4CMP16/
SAM4CMS16
512KB
1MB
2MB
128 + 16 + 8KB
256 + 32 + 16KB
SAM4CMP32/
SAM4CMS32
2MB
128 + 16 + 8KB
256 + 32 + 16KB
100 LQFP
144 LQFP
100 LQFP
74
106
52 / 57
4
3
7
5/6
2 Controllers - 8 CS, + 5 USARTs in SPI Mode
1 Controller - 4 CS + 3/4 USARTs in SPI Mode
10bit, 6 x Externals + 2 x Internals
10bit, 4 x Externals + 2 x Internals
-
7 x Channels / 4 x Channels
50 x 6
32 x 6
-
Host/ Device
-
6 Channels
2
Table 2. SAM4C Metering SOC feature comparison
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© 2013 / www.atmel.com
Atmel Smart Energy Solutions Guide
Active Energy
100.40%
SAM4Cx Software Metrology
Atmel’s software metrology library provides
unprecedented level of performance, scalability, and
flexibility which supports the integration of proprietary
advanced metrology and signal processing algorithms.
Atmel’s standard library enables residential,
commercial, and industrial meter design up to class
0.2 accuracy, dynamic range of 3000:1, and are
compliant with IEC 62052-11, 62053-22/23, ANSI
C12.1, C12.20 and MID.
100.20%
Energy (P) Accuracy
Flexibility to support various country-specific
requirements
100.30%
100.10%
100.00%
99.90%
99.80%
99.70%
99.60%
0.100 A
1.000 A
10.000 A
100.000 A
Test Current [Amps]
PF=1
300deg (lag)
60deg (lead)
180deg (rev)
Figure 5. SAM4CM linear curve
Software Metrology front-end electronics is comprise of ATSENSE-301 and ATSENSE-101 multi-channel (up to
7) simultaneously-sampled Sigma-Delta A/D converters at 16sps, high precision voltage reference with up to 10
ppm/°C temperature stability, programmable current signal amplification, temperature sensor and SPI interface.
Features
• Poly-phase Energy Metering Analog Front End for
Atmel’s MCUs and Metrology library
VDDA
GNDA
VP3
• Compliant with Class 0.2 standards (ANSI C12.202002 and IEC 62053-22)
• Up to 7 Sigma Delta ADC measurement channels:
3 Voltages, 4 Currents, 102 dB Dynamic Range
• Current Channels with Pre-Gain (x1, x2, x4, x8)
• Supports Shunt, Current Transformer, and
Rogowsky Coils
• 3.0V to 3.6V operation, Ultra Low Power:
< 22 mW typ (device fully active @ 3.3V)
• Precision Voltage Reference
• Temperature drift: 50ppm typ (ATSENSE-301)
and 10ppm typ (ATSENSE-301H)
• Factory measured temperature drift and die
temperature sensor to perform software correction.
• 8 MHz Serial Peripheral Interface (SPI) compatible
mode 1 (8-bit) for ADC data and AFE controls.
• Interrupt Output Line signaling ADCs’ end of
conversion, under-run and over-run.
Σ∆ ADC
VN
IP3
PGA
IN3
2.8V
LDO
Decimator
Σ∆ ADC
Decimator
Die
Temperature
Sensor
Voltage
Reference
VTEMP
Σ∆ ADC
Decimator
IP2
PGA
IN2
Σ∆ ADC
SPCK
Serial
Peripheral
Interface
Decimator
NPCS
MISO
MOSI
Control
Registers
VP1
Σ∆ ADC
VN
IP1
IN1
VREF
1K
GNDREF
VP2
VN
VDDIN
PGA
Σ∆ ADC
Decimator
Interrupt
Controller
Decimator
OTP memory
(Calibration Data)
FS_CLK
IP0
ADC_CLK
IN0
DIFF
MUX
2:1
PGA
Σ∆ ADC
Decimator
ITOUT
VDDIO
Power
Clock
Generator On Reset GNDD
MCLK
VTEMP
Figure 6. ATSENSE301 Block Diagram
• Package: 32-lead TQFP, 7 x 7 x 1.4 mm
Atmel Smart Energy Solutions Guide
7
Hardware Metrology AFE
Out of the box solution for basic metering
M90E25
M90E32AS
M90E36A
• Ideal for basic meter designs
• Up to class 0.2 accuracy
• Exceeds IEC, ANSI standards
• Best-in-class temperature drift
SAM4L
Active Energy Error
0.3000
PF=1.0
• Best-in-class dynamic range (up to 6000:1)
• Improves performance
• Reduces OEM’s cost of manufacturing
0.2000
PF=0.8C
0.1000
Error
• Great fit with SAM4L
• picoPower® Technology
• Active mode @ 90µA/MHz
• Full RAM retention @1.5µA
• SleepWalkingTM
• 4x40 Segment LCD Controller
• Hardware Crypto block
PF=0.5L
0.0000
-0.1000
-0.2000
-0.3000
0.01 0.02 0.05 0.10 0.20 0.50
1
2
5
10
20
40
50
60
80
100
Current (A)
Figure 7. SAM90E36A Linearity
Service
Type
Dynamic
Range
Active
Energy
Accuracy
Reactive
Energy
Accuracy
SAM4CMS8/16
1 phase
3000:1
0.1%
0.2%
SAM4CMP8/16
3 phase
3000:1
0.1%
0.2%
SAM4C8/16
-
-
-
-
SAM4CMS32
1 phase
3000:1
0.1%
0.2%
SAM4CMP32
3 phase
3000:1
0.1%
0.2%
-
-
-
-
Security SOC
ATSENSE101
1 phase
3000:1
1%
1%
Software Metrology ADC
ATSENSE301
3 phase
3000:1
0.2%
0.2%
Software Metrology ADC
M90E25
1 phase
5000:1
0.1%
0.2%
AFE, active, reactive energy, instantaneous
and anti-tamper
M90E32AS
3 phase
6000:1
0.1%
0.2%
AFE, active, reactive energy, instantaneous,
fundamental & harmonics measurement,
piece-wise compensation, event detection
M90E36A
3 phase
6000:1
0.1%
0.2%
AFE, active, reactive energy, instantaneous,
fundamental & harmonics measurement,
DFT Function, raw data capture
SAM4C32
Key Features/ Availability
High End Metrology SOC
Security SOC
High End Metrology SOC
Table 3. Atmel Metrology Solutions
8
© 2013 / www.atmel.com
Atmel Smart Energy Solutions Guide
PLC Connectivity Products
Atmel’s family of PLC physical layer and system-on-a-chip (SoC) area standards-compliant OFDM-based solutions are
designed for narrowband communications using the low-voltage electric power distribution network. They are proven in
large-volume deployments in several utilities and markets. Atmel’s unique technology offers:
• High performance and integration levels
• Low power
• Lower bill-of-materials (BOM) costs
• PRIME / ITU-T G.9904
• CENELEC compliance
Enhanced Performance
Offered in a single chip SoC and in a two chip PHY+MCU configurations respectively the Atmel SAM4CP16B and
ATPL230 PRIME+ devices include two additional Robust modes, DQPSK and DBPSK and achieve an increase in gain of up
to +14.5 dB as compared to with PRIME 1.3.6 devices. These devices also can operate at a wider span of FCC and ARIB
bands with up to 8 selectable channels achieving bit rates ranging from 5.4 to 1028.8 kbps.
Single Chip SOC
Two Chip MCU + PHY
Application Layer
MCU/
MPU
6LowPan, 802.15.4,
IPV6,..
PRIME MAC
SAM4CP
ATPL230
PHY
PRIME OFDM PHY
DC/DC
Supply
Line Driver
DC/DC
Supply
Line Driver
AC/DC
Supply
Coupling
AC/DC
Supply
Coupling
MV
LV
Figure 8. PRIME Device, flexible Hardware and software architecture
Atmel Smart Energy Solutions Guide
9
A built in Class-D amplifier architecture is up to 30%
more efficient than competing solutions with only a
handful of external discrete components, reducing
power waste due to heat dissipation and increasing
long-term reliability due to the better thermal behavior.
Atmel Class D Line Driver
An extensive array of system IO, LCD, memory,
RTC, DMA and cryptographic resources available
in SAM4CP16C allow integration of application,
communication and metrology software (using external
ATSENSE devices) to achieve highly reliable, flexible and
cost effective smart meter designs.
[Pload/Psupply]
Efficiency %
Linear PA
Load Impedance [ ]
Figure 9. Class D Amplifier versus Linear Power Amplifier Efficiency
Standard
Frequency
Band
Core
CPU Clock
Flash
SRAM
Package
SAM4CP16B
PRIME 1.3.6
CEN / ARIB / FCC
Dual
Cortex-M4
120 MHz @core
1 MB
128 +16 + 8 KB
QFP176
QFP176
ATPL230
PRIME 1.3.6
CEN / ARIB / FCC
--
--
--
--
QFP 64
Table 4. PLC product features
TDI
System Peripherals
Core
Voltage
Reg
TMS
TCK
Serial Wire and JTAG Debug Port
AHB-AP
LDO
TD0
AHB-AP
SRAM2
8KB
MPU
DSP
FPU
DSP
NVIC
TICK
NVIC
TICK
WDT
LCD
Voltage
Reg
Unique
ID
Cortex-M4
(Core 2)
XTAL
3-20 MHz
Flash
IAP & FFPI
SAM-BA Boot
Crypto Lib
4/8/12 MHz
RC
OSC
SRAM1
16KB
Cortex-M4
(Core 1)
CPKCC
1MB
ROM
SRAM0
128KB
ICM
(SHA)
Cache
Cache
2 x PLL
POR
RTC
Time
Stamp
RTT
Tamper
RC OSC
32kHz
Supply
Contr
XTAL
32kHz
Backup domain
Async
Bridge
AHB Matrix (Mx0)
PMC
BOD
Peripheral
DMA
AHB to APB Bridge 0
PDC
10-bit
ADC
6ch
PDC
6-ch
16-bit
Timer
Up to
67
I/Os
x5
USART
PDC
x2
UART
PDC
x2
TWI
PDC
x1
SPI
AHB Matrix (Mx1)
AHB to APB Bridge 1
PDC
46 x 5
Segment
LCD
TRNG,
AES
IPC0
PRIME +
Robust
PWM
x1
UART
Optical
TRX
IPC1
Figure 10. SAM4CP16B Block Diagram
10
© 2013 / www.atmel.com
Atmel Smart Energy Solutions Guide
TDI
TD0
TCK
TRST
TMS TEST
VPD
JTAG Boundary Scan
Scrambler
BUF_TX3
BUF_TX3
BUF_TX1
BUF_TX0
CS
SCK
MOSI
MISO
EXT_INT
SPI
BRIGE
ARST
SRST
PLL_INIT
CLKEA
CLKEB
CLKOUT
CLOCK &
RESET
INTERFACE
CRC
Convolutional
Encoder
AES-128
EVM
RSSI
RSSI
BER
CD
Interleaver
Cyclic
Prefix
Sub-Carrier
Modulator
IFFT
Scrambler
CRC
Convolutional
Decoder
EMIT(1:12)
TX
Analog
Front-End
Control
POWER
MANAGEMENT
BUF_RX3
BUF_RX3
BUF_RX1
BUF_RX0
Converter/PAD
Gain
Control
AGC(0:5)
Tx/Rx
Control
TXRX1
TXRX2
ZERO CROSS
DETECTOR
Interleaver
Pre-FFT
Syncro
Sub-Carrier
Demodulator
FFT
VZ_CROSS
VIMA
VIPA
VRP
VRM
VRC
Converter
RX
Figure 11. ATPL230 Block Diagram
Atmel PRIME Software Stack
USER APPLICATION
Convergence Layer
Service Specific Convergence Sublayer
(SSCS)
IPv4 IPv6 IEC-432
NULL
Management
Plane
New
SSCS
With an ATMEL free certified stacks, customers will
be able to concentrate their development efforts
on application development. The modular software
architecture and the advanced capabilities of the
management plane, Atmel stack provides unparalleled
flexibility in the software architecture and reduce the
memory requirements of the top-level application.
Common Part Convergence Sublayer
(CPCS)
MAC Layer
MLME-SAP
MAC Layer Mgmt.
Entity(MLME)
PHY Layer
PLME-SAP
PHY Layer Mgmt.
Entity(PLME)
Figure 12. Drawing PRIME Stack
Atmel Smart Energy Solutions Guide
11
Wireless Connectivity Products
To help you speed up system development and
prototyping, Atmel offers a variety of free software
suites, various hardware evaluation boards, and
development kits and modules.
Efficient smart energy wireless applications require
both high-performance and power efficiency. Atmel
transceivers deliver the leading RF link budget with the
industry’s lowest power consumption.
Key Products
Additionally, Atmel offers the most feature-rich IEEE
802.15.4-compliant transceiver family available. Our
transceivers support both regional 700/800/900MHz,
as well as global 2.4GHz frequency bands. This enables
you to develop wireless applications for customers
worldwide, including emerging markets like China.
The AT86RF212B is a low-power, low-voltage
RF transceiver for the regional 700/800/900 MHz
frequency bands available in Japan, China, Europe and
North America. This transceiver offers an extremely good
120 dB link budget (-110 dBm receiver sensitivity /
+10 dBm transmit power) designed for low-cost IEEE
802.15.4, ZigBee and high data rate ISM (industrial
scientific medical) applications.
Enhanced Performance
Powerful hardware features like antenna diversity or
external power amplifier support let you further boost
transceiver performance to maximize network reliability
and RF range of your system. Atmel MCU wireless
transceivers support not only IEEE 802.15.4-compliant
applications, but provide on-air data rates up to 2Mbit/s
for general purpose ISM applications. Pin compatibility
ensures an easy transition between devices or
frequency bands.
The Atmel AT86RF233 transceiver is designed to
operate in the 2.4GHz ISM band, available worldwide.
This transceiver offers link budgets up to 105dB
(-101dBm receiver sensitivity/+4dBm transmit power).
For a complete overview of features, key parameters,
and targeted application areas, please see the data
sheet.
VDD
CB2
CX1
CX2
XTAL
31
30
29
28
27
26
25
AVSS
AVSS
AVDD
EVDD
AVSS
XTAL1
XTAL2
2 DIG4
C1
RF
F1
3 AVSS
5 RFN
C2
MOSI 22
AT86RF212B
AT86RF231
AT86RF232
AT86RF233
4 RFP
B1
IRQ 24
/SEL 23
6 AVSS
DVSS 21
MISO 29
SCLK 19
DVSS 18
DIG1
DIG2
SLP_TR
DVSS
DVDD
DVDD
DEVDD
DVSS
7 DVSS
9
10
11
12
13
14
15
16
8 /RST
CLKM 17
C3
VDD
CB3
CB4
AVR / ARM
Controller
R1
Digital Interface
1 DIG3
32
AVSS
CB1
Figure 13. Wireless Tranceiver Application Diagram
12
© 2013 / www.atmel.com
XTAL1
XTAL2
Atmel Smart Energy Solutions Guide
ext. PA and Power
Control
DIG3/4
XOSC
AVREG
PLL
PA
Configuration Registers
TX Data
TX BBP
/SEL
DVREG
SPI
(Slave)
RFP
MOSI
SCLK
Frame
Buffer
FTN, BATMON
MISO
RFN
LNA
BPF
PPF
Limiter
ADC
RX BBP
AES
IRQ
CLKM
DIG2
/RST
AGC
AD
DIG1/2
Control Logic
SLP_TR
Antenna Diversity
Analog Domain
Digital Domain
Figure 14. RF233 Block Diagram
Band
[MHz] Modulation
AT86RF212B
Transceiver
AT86RF233
Transceiver
Data Rate
[kbit/s]
RX
Max.TX
Sens. Power
[dBm] [dBm]
Current:
SLEEP, TRX_OFF,
RX_ON, BUSY_TX
Comment
769
...
935
BPSK,
O-QPSK
20,40,100,
200, 250, 400,
500, 1000
-110
10
0.2µA, 0.4mA
9.2mA,
[email protected]
Compliant to
IEEE 802.15.42006/2011
23222527
O-QPSK
250, 500,
1000, 2000
-101
4
0.02/0.2µA
0.3mA, 6.0/11.8mA,
[email protected]
Successor of RF231
with several new
features
3.5
0.02µA, 0.4mA,
8.0/12.5mA,
[email protected]
Successor of
ATmega128RFA1;
based on RF23X
transceiver and
ATmega1281
ATmegaXXRFR2
Flash/SRAM/EEPRO
M64K/8K/2K
128K/16K/4K
256K/32K/8K
2450
O-QPSK
250, 500,
1000, 2000
-100
Table 5. Smart Energy Wireless products
Atmel Smart Energy Solutions Guide
13
Development Platforms
• Metering
• SAM4CMP8/16/32 Metrology Demo Board
• ATM90Exx AFE + SAM4C Demo Board
• ATM90Exx AFE + SAM4L Demo Board
• SAM4C Evaluation Kit
• Power Line Carrier
• Wireless
• Evaluation Kits and Reference Designs for IEEE
802.15.4 compliant Transceivers and SOCs,
e.g. AT86RF212B (sub-1GHz) and AT86RF233
(2.4 GHz)
• SAM4 Xplained Pro Evaluation Kits combined
with Wireless Extension Boards
• SAM4CP16 PLC Evaluation Kit
• Certified PRIME stack (base node and meter)
• SAM4S, SAM4L Xplained Pro Evaluation Kits
14
© 2013 / www.atmel.com
Atmel Corporation
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