IO13PDB0V0 datasheet(113/197 Pages) MICROSEMI

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SmartFusion Customizable System-on-Chip (cSoC)

Re vi s i on 12

4 - 9

Re-Programming the eNVM Blocks Using the Cortex-M3

In this mode the Cortex-M3 is executing the eNVM programming algorithm from eSRAM. Since individual

pages (132 bytes) of the eNVM can be write-protected, the programming algorithm software can be

protected from inadvertent erasure. When reprogramming the eNVM, both MSS I/Os and FPGA I/Os are

available as interfaces for sourcing the new eNVM image. The SoC Products Group provides working

example projects for SoftConsole, IAR, and Keil development environments. These can be downloaded

via the SoC Products Group Firmware Catalog.

Alternately, the eNVM can be reprogrammed by the Cortex-M3 via the IAP driver. This is necessary when

using an encrypted image.

Secure Programming

For background, refer to the "Security in Low Power Flash Devices" chapter of the Fusion FPGA Fabric

User’s Guide

on the SoC Products Group website. SmartFusion ISP behaves identically to Fusion ISP.

IAP of SmartFusion cSoCs is accomplished by using the IAP driver. Only the FPGA fabric and the eNVM

can be reprogrammed with the protection of security measures by using the IAP driver.

Typical Programming and Erase Times

Table 4-3 documents the typical programming and erase times for two components of SmartFusion

cSoCs, FPGA fabric and eNVM, using the SoC Products Group’s FlashPro hardware and software.

These times will be different for other ISP and IAP methods. The Program action in FlashPro software

includes erase, program, and verify to complete.

The typical programming (including erase) time per page of the eNVM is 8 ms.

References

User’s Guides

DirectC User’s Guide

http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=132588

In-System Programming (ISP) of Microsemi’s Low-Power Flash Devices Using FlashPro4/3/3X

http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=129973

Programming Flash Devices HandBook

http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=129930

Application Notes on IAP Programming Technique

SmartFusion cSoC: Programming FPGA Fabric and eNVM Using In-Application Programming Interface

App Note

http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=129818

SmartFusion cSoC: Basic Bootloader and Field Upgrade eNVM Through IAP Interface App Note

http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=129823

Table 4-3 • Typical Programming and Erase Times

FPGA Fabric (seconds)

eNVM (seconds)

FlashROM (seconds)

A2F060

A2F200

A2F500

A2F060

A2F200

A2F500

A2F060

A2F200

A2F500

Erase

N/A

Program

Verify

12918

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