ASMgrid

Asmgrid blockdiagram


While Smart Grid trials and deployments are in full force in many parts of the world, solution providers are still defining more advanced communication standards and product features which would be required in electric meters. Unfortunately, silicon solutions available today fall short in either providing support for newer technologies or doing so in both a cost effective and scalable manner. The ASMgrid2 product family reconciles these competing forces through market leading silicon integration and design innovation.

 

The ASMgrid2 system-on-chip architecture encompasses a broad range of technologies including high-precision analog-front-ends, RF transceivers, non-volatile memories, and processing capabilities needed to run required protocol stacks and vendor application software. Each one of the three devices contains an ARM® processor for unmatched performance, code density, and development capability. In addition to other processing, the ARM processors are also used in combination with hardware acceleration for Accent's SUNFX™ modems, providing adaptable solutions to track advancing communication standards.

 

Product Name

Processor

ARM ARM926EJ-S™

ARM Cortex™-M0

MHz

192 MHz

88 MHz

Cache

4-way associative

8KB I$/ 8 KB D$

Direct mapped I$ on Flash

On-chip Memory

32 KB Flash, 64 KB SRAM

2MB / 8MB SDRAM (package option)

32 KB Flash, 32 KB SRAM

2MB / 8MB SDRAM (package option)

64 KB Flash, 32 KB SRAM, 16 KB ROM

Off-chip Memory Support

Up to 64 MB SDRAM

Up to 8MB Parallel Flash

Serial Flash

Serial Flash

Energy Measurement

4 ch. - 10,000:1 @0.1%

25.6 KHz sampling

48MHz 64 bit DSP

6 ch. - 10,000:1 @0.1%

25.6 KHz sampling

48MHz 64 bit DSP

-

LCD

Up to 128 pixels, 3 and 5 V support

Chip on Glass LCD module support

Home Area Support

2.4 GHz, 802.15.4 (ZigBee PRO, SEP2.0 Ready)250 Kbps

ZigBee Protocol and Application Processing

-

Near Area Support

Protocol stack and SW

upper layer processing

915 MHz,802.15.4g
800 Kbps

Power Management

uA system standby operation (2 KB retention RAM)

uA system standby operation (512 B retention RAM)

Stop and reduced-power listen mode

Security

AES accelerator, memory protection, secured ports

Secured ports

Package

196LFBGA

196BGA, 144LQFP

56QFN

 

Product Name

Processor

ARM Cortex-M3

MHz

90 MHz

Cache

 

Direct mapped I$  

4-way associative I$ / D$

On-chip Memory

256 KB Flash

48 KB SRAM

2MB SDRAM (package option)

576 KB Flash

96 KB SRAM

2MB / 8MB SDRAM (package option)

Off-chip Memory Support

SDRAM, Serial Flash

SDRAM, NAND/NOR Flash, SRAM

Energy Measurement

 

3 ch.  - 10,000:1 @0.1%

3 ch.  -   2,000:1 @0.5%

25.6 KHz sampling

36MHz 64 bit DSP

LCD

Chip on Glass LCD module support

Home Area Support

Support via serial interface

Near Area Support

ITU G.990x, G3-PLC, PRIME, IEEE P.1901.2

AFE, PHY, protocol stack and SW upper layer processing

Power Management

uA system standby operation

Security

AES accelerator, memory protection, secured ports

Package

72QFN

128QFP