IVBAT |
Current into VBAT terminal if no primary battery is connected |
VBAT = 1.7 V,
DVCC not connected,
RTC running |
TA = –40°C |
|
|
0.43 |
|
µA |
TA = 25°C |
|
0.52 |
|
TA = 60°C |
|
0.58 |
|
TA = 85°C |
|
0.64 |
|
VBAT = 2.2 V,
DVCC not connected,
RTC running |
TA = –40°C |
|
|
0.50 |
|
TA = 25°C |
|
0.59 |
|
TA = 60°C |
|
0.64 |
|
TA = 85°C |
|
0.71 |
|
VBAT = 3 V,
DVCC not connected,
RTC running |
TA = –40°C |
|
|
0.68 |
|
TA = 25°C |
|
0.75 |
|
TA = 60°C |
|
0.79 |
|
TA = 85°C |
|
0.86 |
|
VSWITCH |
Switch-over level (VCC to VBAT) |
CVCC = 4.7 µF |
General |
|
|
VSVSH_IT- |
|
V |
SVSHRL = 0 |
1.59 |
|
1.69 |
SVSHRL = 1 |
1.79 |
|
1.91 |
SVSHRL = 2 |
1.98 |
|
2.11 |
SVSHRL = 3 |
2.10 |
|
2.23 |
RON_VBAT |
ON-resistance of switch between VBAT and VBAK |
VBAT = 1.8 V |
0 V |
|
0.35 |
1 |
kΩ |
VBAT3 |
VBAT to ADC input channel 12:
VBAT divided, VBAT3 = VBAT/3 |
|
1.8 V |
|
0.6 |
±5% |
V |
3 V |
|
1.0 |
±5% |
3.6 V |
|
1.2 |
±5% |
tSample, VBAT3 |
VBAT to ADC: Sampling time required if VBAT3 selected |
ADC12ON = 1,
Error of conversion result ≤ 1 LSB |
|
1000 |
|
|
ns |
VCHVx |
Charger end voltage |
CHVx = 2 |
|
2.65 |
2.7 |
2.9 |
V |
RCHARGE |
Charge limiting resistor |
CHCx = 1 |
|
|
|
5 |
kΩ |
CHCx = 2 |
|
|
10 |
CHCx = 3 |
|
|
20 |