DS-72-34 Datasheet, PDF (5/18 Pages) Cymbet Corporation – I2C Real-Time Clock/Calendar with Integrated Backup Power

Preliminary
CBC34803 EnerChip™ RTC
POWER SUPPLY CURRENT CHARACTERISTICS OF INTEGRATED CBC910 POWER
MANAGEMENT CIRCUIT ONLY
Ta = -20ºC to +70ºC
CHARACTERISTIC
Quiescent Current
(CBC910 power
management circuit
only; VDD > VRESET ; RTC
current not included)
EnerChip Cutoff Current
(IQBATON adds to RTC
current when in backup
mode)
SYMBOL
IQ
IQBATOFF
IQBATON
CONDITION
VDD=3.3V
ENABLE=GND
VDD=5.5V
VDD=3.3V
ENABLE=VDD _VDD=5.5V
VBAT < VBATCO,
VOUT=0
VBAT > VBATCO,
IOUT=0
MIN MAX UNITS
-
3.5
µA
-
6.0
µA
-
35
µA
-
38
µA
-
0.5
nA
-
42
nA
INTERFACE LOGIC SIGNAL CHARACTERISTICS
VDD = 2.5V to 5.5V, Ta = -20ºC to +70ºC
CHARACTERISTIC
SYMBOL
CONDITION
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
VIH
-
VIL
-
VOH
IL=10µA
Low Level Output Voltage
VOL
IL = -100µA
Logic Input Leakage Current
IIN
0<VIN<VDD
(1) _{RESET tracks VDD; RESET = VDD - (IOUT x ROUT).}
MIN
VDD - 0.5
-
VDD -
0.04V ⁽¹⁾
-
-1.0
MAX
-
0.5
-
UNITS
Volts
Volts
Volts
0.3
+1.0
Volts
nA
RESET SIGNAL AC/DC CHARACTERISTICS
VDD = 2.5V to 5.5V, Ta = -20ºC to +70ºC
CHARACTERISTIC
VDD Rising to RESET
Rising
VDD Falling to RESET
Falling
TRIP Voltage
VDD Rising
RESET Hysteresis
Voltage
(VDD to RESET)
SYMBOL
tRESETH
tRESETL
VRESET
CONDITION
VDD rising from 2.8V TO 3.1V
in <10µs
VDD falling from 3.1V to 2.8V
in <100ns
VMODE=GND
VHYST
VMODE=GND
MIN MAX UNITS
60
200
ms
0.2
60
µs
2.85 3.15
V
45
75
mV
©2014-2015 Cymbet Corporation • Tel: [phone] • www.cymbet.com
DS-72-34 V.20

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