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ASMgrid2 Based Smart Meter |
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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 |
ARM Cortex-M3 |
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MHz |
192 MHz |
88 MHz |
90 MHz |
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Cache |
4-way associative 8KB I$/ 8 KB D$ |
Direct mapped I$ on Flash |
Direct mapped I$ 4-way associative I$ / D$ |
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On-chip Memory |
32 KB Flash, 64 KB SRAM 2MB / 8MB SDRAM |
32 KB Flash, 32 KB SRAM 2MB / 8MB SDRAM |
64 KB Flash, 32 KB SRAM, 16 KB ROM |
576 KB Flash 96 KB SRAM 2MB / 8MB SDRAM |
Off-chip Memory Support |
Up to 64 MB SDRAM Up to 8MB Parallel Flash Serial Flash |
Serial Flash |
SDRAM, NAND/NOR Flash, SRAM |
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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 |
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3 ch. - 10,000:1 @0.1% 3 ch. - 2,000:1 @0.5% 25.6 KHz sampling 36MHz 64 bit DSP |
LCD |
Up to 128 pixels, 3 and 5 V support |
Chip on Glass LCD module support |
Chip on Glass LCD module support |
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Home Area Support |
2.4 GHz, 802.15.4 (ZigBee PRO, SEP2.0 Ready)250 Kbps |
ZigBee Protocol and Application Processing |
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Support via serial interface |
Near Area Support |
Protocol stack and SW upper layer processing |
915 MHz,802.15.4g |
G3, PRIME, IEEE1901.2 AFE, PHY, protocol stack and SW upper layer processing |
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Power Management |
uA system standby operation (2 KB retention RAM) |
uA system standby operation (512 B retention RAM) |
Stop and reduced-power listen mode |
uA system standby operation |
Security |
AES accelerator, memory protection, secured ports |
Secured ports |
AES accelerator, memory protection, secured ports |
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Package |
196LFBGA |
196BGA, 144LQFP |
56QFN |
128QFP |
