SN8F5708 datasheet(55/204 Pages) SONIX

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SN8F5708 Series

System Operating Mode

Datasheet Rev. 2.4

9.1 Normal Mode

The Normal Mode is system high clock operating mode. The system clock source is from high

speed oscillator. The program is executed. After power on and any reset trigger released, the

system inserts into normal mode to execute program. When the system is wake-up from STOP/IDLE

mode, the system also inserts into normal mode. In normal mode, the high speed oscillator is

active, and the power consumption is largest of all operating modes.



The program is executed, and full functions are controllable.



The system rate is high speed.



The high speed oscillator and internal low speed RC type oscillator are active.

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Normal mode can be switched to other operating modes through PCON register.



STOP/IDLE mode is wake-up to normal mode.

9.2 STOP Mode

The STOP mode is the system ideal status. No program execution and oscillator operation. Only

internal regulator is active to keep all control gates status, register status and SRAM contents. The

STOP mode is waked up by P0/P1 hardware level change trigger. P0 wake-up function is always

enables. The STOP mode is wake-up to normal mode. Inserting STOP mode is controlled by stop bit

of PCON register. When stop = 1, the system inserts into STOP Mode. After system wake-up from

STOP mode, the stop bit is disabled (zero status) automatically.



The program stops executing, and full functions are disabled.



All oscillators including external high/low speed oscillator, internal high speed oscillator and

internal low speed oscillator stop.



Only internal regulator is active to keep all control gates status, register status and SRAM

contents.

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The system inserts into normal mode after wake-up from STOP mode.

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The STOP mode wake-up source is P0/P1 level change trigger.

SN8F5708 Datasheet(PDF) 55 Page - SONiX Technology Company