SN8F5708 datasheet(164/204 Pages) SONIX

164 / 204 page

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SN8F5708 Series

In-System Program

Datasheet Rev. 2.4

164

23 In-System Program

SN8F5708 builds in an on-chip 16 KB program memory, aka IROM, which is equally divided to 512

pages (32 bytes per page). The in-system program is a procedure that enables a firmware to freely

modify every page’s data; in other word, it is the channel to store value(s) into the non-volatile

memory and/or live update firmware.

0x3FFF

Page 511

0x3FE0

0x3FDF

Page 510

0x3FC0

…

0x003F

Page 1

0x0020

0x001F

Page 0

0x0000

Program memory (IROM)

23.1

Page Program

Because each page of the program memory has 32 bytes in length, a page program procedure

requires 32 bytes IRAM as its data buffer.

ISP ROM MAP

ROM address bit0~bit4 (hex) =0

0000

These pages include reset vector and interrupt sector. We strongly recommend

to reserve the area not to do ISP erase.

0020

0040

…

00C0

00E0

0100

One ISP Program Page

0120

One ISP Program Page

…

One ISP Program Page

1000

One ISP Program Page

1020

One ISP Program Page

…

One ISP Program Page

3700

One ISP Program Page

3720

One ISP Program Page

…

One ISP Program Page

3FE0

This page includes ROM reserved area. We strongly recommend to reserve the

area not to do ISP erase.

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