STK17T88
RTC DC Characteristics
Symbol | Parameter | Commercial | Industrial | Units | Notes | |||
Min | Max | Min | Max | |||||
|
|
|
| |||||
IBAK | RTC Backup Current | — | 300 | — | 350 | nA | From either VRTCcap or VRTCbat | |
|
|
|
|
|
|
|
| |
VRTCbat | RTC Battery Pin | 1.8 | 3.3 | 1.8 | 3.3 | V | Typical = 3.0 Volts during normal operation | |
| Voltage |
|
|
|
|
|
| |
|
|
|
|
|
|
|
| |
VRTCcap | RTC Capacitor Pin | 1.2 | 2.7 | 1.2 | 2.7 | V | Typical = 2.4 Volts during normal operation | |
| Voltage |
|
|
|
|
|
| |
|
|
|
|
|
|
|
| |
tOSCS | RTC Oscillator time to | — | 10 | — | 10 | sec | At Minimum Temperature from Power up or | |
| start |
|
|
|
|
| Enable | |
|
|
|
|
|
|
|
| |
|
| — | 5 | — | 5 | sec | At 25°C from Power up or Enable | |
|
|
|
|
|
|
|
| |
Figure 4. RTC Component Configuration
1 |
|
C | Y |
RF | |
| 1 |
2 |
|
C |
|
X1
X2
Recommended Values
Y1 = 32.768 KHz
RF = 10M Ohm
C1 = 0 (install cap footprint, but leave unloaded)
C2 = 56 pF ± 10% (do not vary from this value)
Document Number: | Page 5 of 22 |
[+] Feedback
