Bref Electrical Characteristics - Micro crystal RV-1805-C3 Applications Manual

Micro Crystal
Extrem Low Power Real Time Clock / Calendar Module
6.8.

BREF ELECTRICAL CHARACTERISTICS

The following Table lists the parameters of the V
the table are not supported. For this table, T
BREF Parameters:
SYMBOL PARAMETER
V V falling threshold
BRF BACKUP
V V rising threshold
BRR BACKUP
V V threshold hysteresis
BRH BACKUP
BREF/BPOL change to
t
BREF
BBOD valid
V analog comparator
BACKUP
T recommended operating
BR
temperature range
voltage thresholds. BREF values other than those listed in
BACKUP
= -20 °C to 70 °C, TYP values at 25 °C, V
A
BREF MIN
0111 2.3
1011 1.9
1101 1.6
1111
0111 2.6
1011 2.1
1101 1.9
1111
0111
1011
1101
1111
All valid BREF
values
-20
= 1.7 to 3.6V.
DD
TYP MAX
2.5 3.3
2.1 2.8
1.8 2.5
1.4
3.0 3.4
2.5 2.9
2.2 2.7
1.6
0.5
0.4
0.4
0.2
1000
70
RV-1805-C3
UNIT
V
V
V
ms
°C
88/98