SH79F166APSLASH044PR datasheet(97/113 Pages) SINOWEALTH

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SH79F166A

8.11 Warm-up Timer

8.11.1 Feature

 Built-in power on warm-up counter to eliminate unstable state of power on

 Built-in oscillator warm-up counter to eliminate unstable state when oscillation startup

SH79F166A has a built-in power warm-up counter; it is designed to eliminate unstable state after power on or to do some

internal initial operation such as read customer option etc.

SH79F166A has also a built-in oscillator warm-up counter, it is designed to eliminate unstable state when oscillator starts

oscillating in the following conditions: Power-on reset, Pin reset, LVR reset, Watchdog Reset and Wake up from Power-down

mode.

After power-on, SH79F166A will start power warm-up procedure first, and then oscillator warm-up procedure.

Power Warm-up Time

Power On Reset/

Pin Reset/

Low Voltage Reset

WDT Reset

(Not in Power-Down Mode)

WDT Reset

(Wakeup from Power-Down

Mode)

Wakeup from Power-Down

Mode

(Only for interrupt)

TPWRT**

OSC

Warm up*

TPWRT**

OSC

Warm up*

TPWRT**

OSC

Warm up*

TPWRT**

OSC

Warm up*

11ms

YES

≈1ms

YES

≈800us

YES

OSC Warm-up Time

Option:

OP_WMT

Oscillator Type

Ceramic/Crystal

17 X Tosc

14 X Tosc

11 X Tosc

8 X Tosc

32kHz Crystal

13 X Tosc

Internal RC

7 X Tosc

SH79F166AP/044PR Datasheet(PDF) 97 Page - SINOWEALTH Electronic Ltd

SH79F166AP/044PR Datasheet(HTML) 97 Page - SINOWEALTH Electronic Ltd

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