Preliminary W91510DN SERIES

Publication Release Date: May 1997

- 13 -

Revision A2

RTC DC CHARACTERISTICS

° C, all outputs unloaded.)

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply Voltage

-

1.2

1.5

1.8

V

Supply Current

No Load

-

2.0

4.0

µA

OSC. Starting Time

-

-

-

3

S

OSC. Output Built-in Cap.

Cl = 12.5 pF

-

25

-

pF

OSC. in Trimmer Cap.

-

5

-

35

pF

Frequency Stability

∆f/f

-

-

1

ppM

Notes :

1. Crystal parameters suggested for proper operation are Rs < 100 ohms, Lm = 96 mH , Cm = 0.02 pF , Cn = 5 pF , Cl = 18 pF,

and Fosc. = 3.579545 MHz

±0.02%

2. Crystal oscillator accuracy directly affects these times.

TIMING WAVEFORMS

HKS

KEY IN

DP

T/P MUTE

H/P MUTE

2

B

M

2

M B

4

3

< 600 mS

< 300 mS

DTMF

OSC.

Low

OSCILLATION

OSCILLATION

Figure 1(a). Normal Dialing Timing Diagram (Pulse Mode without Lock Function)