BQ3285EC Datasheet, PDF (14/26 Pages) Texas Instruments – Real-Time Clock (RTC)

bq3285EC/LC
DC Electrical Characteristics—bq3285LC (T_A = T_OPR, V_CC = 3V ± 10%)
Symbol
Parameter
Minimum Typical¹ Maximum Unit
Conditions/Notes
ILI
Input leakage current
-
-
±1
µA VIN = VSS to VCC
ILO
Output leakage current
AD0–AD7 and INT in high
-
-
±1
µA impedance,
VOUT = VSS to VCC
VOH
Output high voltage
2.2
-
-
V IOH = -1.0 mA
VOL
Output low voltage
-
-
0.4
V IOL = 2.0 mA
ICC
ICCSB
Operating supply current
Standby supply current
-
5²
Min. cycle, duty = 100%,
9
mA _{IOH = 0mA, IOL = 0mA}
-
100³
-
µA
VIN = VSS or VCC,
CS ≥ VCC - 0.2
VSO
Supply switch-over voltage
-
V_PFD
-
-
VBC
-
V V_BC > VPFD
V V_BC < VPFD
ICCB
Battery operation current
-
0.3
0.5
µA
V_BC = 3V, TA = 25°C,
VCC < VBC
VPFD
Power-fail-detect voltage
2.4
2.53
2.65
V
IRCL
Input current when RCL = VSS.
-
-
120
µA Internal 30K pull-up
IMOTH
Input current when MOT = VCC
-
Input current when MOT = VSS
-
-
-120
µA Internal 30K pull-down
-
0
µA Internal 30K pull-down
Input current when EXTRAM =
-
VCC
IXTRAM
Input current when EXTRAM =
-
VSS
-
-120
µA Internal 30K pull-down
-
0
µA Internal 30K pull-down
Notes:
1. Typical values indicate operation at TA = 25°C, VCC = 3V.
2. 7mA at VCC = 5V
3. 300µA at VCC = 5V
July 1996
14