Datasheet

1.76
1.77
1.78
1.79
1.8
1.81
-40 -20 0 20 40 60 80
T -Free-AirTemperature-°C
A
Power-OnResetNegative-GoingV
oltage-V
POWERONRESETBEHAVIOR
FREE-AIRTEMPERATURE
VS
bq20z65-R1
www.ti.com SLUS990 –DECEMBER 2009
POWER-ON RESET
Over operating free-air temperature range (unless otherwise noted), T
A
= –40°C to 85°C, V
(REG25)
= 2.41 V to 2.59 V,
V
(BAT)
= 14 V, C
(REG25)
= 1 µF, C
(REG33)
= 2.2 µF; typical values at T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VIT- Negative-going voltage input 1.7 1.8 1.9 V
VHYS Power-on reset hysteresis 5 125 200 mV
active low time after power up or watchdog
t
RST
RESET active low time 100 250 560 µs
reset
DATA FLASH CHARACTERISTICS OVER RECOMMENDED OPERATING TEMPERATURE AND
SUPPLY VOLTAGE
Typical values at T
A
= 25°C and V
(REG25)
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Data retention 10 Years
Flash programming write-cycles 20k Cycles
t
(ROWPROG)
Row programming time See
(1)
2 ms
t
(MASSERASE)
Mass-erase time 200 ms
t
(PAGEERASE)
Page-erase time 20 ms
I
(DDPROG)
Flash-write supply current 5 10 mA
I
(DDERASE)
Flash-erase supply current 5 10 mA
RAM/REGISTER BACKUP
V
(RBI)
> V
(RBI)MIN
, V
REG25
< V
IT–
, T
A
= 85°C 1000 2500
I
(RB)
RB data-retention input current nA
V
(RBI)
> V
(RBI)MIN
, V
REG25
< V
IT–
, T
A
= 25°C 90 220
V
(RB)
RB data-retention input voltage
(1)
1.7 V
(1) Specified by design. Not production tested.
SMBus TIMING CHARACTERISTICS
T
A
= –40°C to 85°C Typical Values at T
A
= 25°C and V
REG25
= 2.5 V (Unless Otherwise Noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
(SMB)
SMBus operating frequency Slave mode, SMBC 50% duty cycle 10 100 kHz
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