Cypress STK17TA8 Manual De Usuario

Document #: 001-52039  Rev. **

Page 5 of 23

I

BAK

RTC Backup Current

—

300

—

350

nA

From either V

RTCcap

 or V

RTCbat

V

RTCbat

RTC Battery Pin Voltage

1.8

3.3

1.8

3.3

V

Typical = 3.0 Volts during normal 

operation

V

RTCcap

RTC Capacitor Pin Voltage

1.2

2.7

1.2

2.7

V

Typical = 2.4 Volts during normal 

operation

t

OSCS

RTC Oscillator time to start

—

10

—

10

sec

At MIN Temperature from Power up 

or Enable

—

5

—

5

sec

At  25

°C from Power up or Enable

C

1

C

2

RF

Y

1

X

1

X

2

Recommended Values

Y

1 

= 32.768 KHz
= 10M Ohm
= 0 (install cap footprint, 

but leave unloaded)

= 56 pF ± 10% (do not vary from this value)

RF

C

1 

C

2