SN8A1702AX datasheet(33/145 Pages) SONIX

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SN8P1700

8-bit micro-controller build-in 12-bit ADC

SONiX TECHNOLOGY CO., LTD

Page 33

Revision 1.94

DATA MEMORY (RAM)

OVERVIEW

The SN8P1700 has internally built-in the data memory up to 256 bytes for storing the general-purpose data.

For

SN8P1702

48 * 8-bit general purpose area in bank 0

128 * 8-bit system special register area

For

SN8P1704

128 * 8-bit general purpose area in bank 0

128 * 8-bit system special register area

For

SN8P1706/SN8P1707/SN8P1708

128 * 8-bit general purpose area in bank 0

128 * 8-bit general purpose area in bank 1

128 * 8-bit system special register area

The memory is separated into bank 0 and bank 1. The user can program RAM bank selection bits of RBANK register

to access all data in any of the two RAM banks. The bank 0, using the first 128-byte location assigned as

general-purpose area, and the remaining 128-byte in bank 0 as system register. The bank 1, using the first 128-byte

location assigned as general-purpose area, and others useless.

RAM location

000h

000h~03Fh of Bank 0 = To store general-

“

purpose data (64 bytes).

“

03Fh

General purpose area

080h

080h~0FFh of Bank 0 = To store system

“

registers (128 bytes).

“

System register

BANK 0

0FFh

End of bank 0 area

Figure 3-4. RAM Location of SN8P1702

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