KS57C2308/P2308/C2316/P2316OSCILLATOR CIRCUITS

Table 6-5. System Operating Mode Comparison

Mode

Condition

STOP/IDLE Mode Start

Current

 

 

Method

Consumption

 

 

 

 

Main operating mode

Main oscillator runs.

A

 

Sub oscillator runs (stops).

 

 

 

System clock is the main

 

 

 

oscillation clock.

 

 

 

 

 

 

Main Idle mode

Main oscillator runs.

IDLE instruction

B

 

Sub oscillator runs (stops).

 

 

 

System clock is the main

 

 

 

oscillation clock.

 

 

 

 

 

 

Main Stop mode

Main oscillator runs.

STOP instruction

D

 

Sub oscillator runs.

 

 

 

System clock is the main

 

 

 

oscillation clock.

 

 

 

 

 

 

Sub operating mode

Main oscillator is stopped by

C

 

SCMOD.3.

 

 

 

Sub oscillator runs.

 

 

 

System clock is the sub

 

 

 

oscillation clock.

 

 

 

 

 

 

Sub ldle Mode

Main oscillator is stopped by

IDLE instruction

D

 

SCMOD.3.

 

 

 

Sub oscillator runs.

 

 

 

System clock is the sub

 

 

 

oscillation clock.

 

 

 

 

 

 

Sub Stop mode

Main oscillator is stopped by

Setting SCMOD.2 to “1”

E

 

SCMOD.3.

This mode can be released

 

 

Sub oscillator runs.

only by an external reset.

 

 

System clock is the sub

 

 

 

oscillation clock.

 

 

 

 

 

 

Main/Sub Stop mode

Main oscillator runs.

STOP instruction:

E

 

Sub oscillator is stopped by

This mode can be released

 

 

SCMOD.2.

by an interrupt and reset.

 

 

System clock is the main

 

 

 

oscillation clock.

 

 

 

 

 

 

NOTE: The current consumption is: A > B > C > D > E.

6-9

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Samsung manual KS57C2308/P2308/C2316/P2316OSCILLATOR Circuits