Rainbow Electronics DS2778 - Manual (Page 4)

DS2775/DS2776/DS2777/DS2778
2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
4 _______________________________________________________________________________________
EEPROM RELIABILITY SPECIFICATION
(V DD = +4.0V to +9.2V, T A = -20°C to +70°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
EEPROM Copy Time t
EEC
10 ms
EEPROM Copy Endurance N EEC T A = +50°C 50,000 Cycles
ELECTRICAL CHARACTERISTICS: 1-Wire INTERFACE, STANDARD (DS2775/DS2776 ONLY)
(V
DD
= +4.0V to +9.2V, T
A
= -20°C to +70°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Time Slot t SLOT 60 120 μs
Recovery Time t REC 1 μs
Write-Zero Low Time t LOW0 60 120 μs
Write-One Low Time t LOW1 1 15 μs
Read Data Valid t
RDV
15 μs
Reset Time High t
RSTH
480 μs
Reset Time Low t RSTL 480 960 μs
Presence-Detect High t PDH 15 60 μs
Presence-Detect Low t PDL 60 240 μs
ELECTRICAL CHARACTERISTICS: 1-Wire INTERFACE, OVERDRIVE (DS2775/DS2776 ONLY)
(V DD = +4.0V to +9.2V, T A = -20°C to +70°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Time Slot t SLOT 6 16 μs
Recovery Time t REC 1 μs
Write-Zero Low Time t LOW0 6 16 μs
Write-One Low Time t LOW1 1 2 μs
Read Data Valid t
RDV
2 μs
Reset Time High t RSTH 48 μs
Reset Time Low t RSTL 48 80 μs
Presence-Detect High t PDH 2 6 μs
Presence-Detect Low t PDL 8 24 μs