DS1747_12 Datasheet, PDF (14/16 Pages) Maxim Integrated Products – Y2K-Compliant, Nonvolatile Timekeeping RAMs

DS1747/DS1747P Y2K-Compliant, Nonvolatile Timekeeping RAMs
POWER-UP/DOWN CHARACTERISTICS (3.3V)
(V_CC = 3.3V ±10%, T_A = Over the Operating Range.)
PARAMETER
SYMBOL MIN TYP
CE or WE at V_H, Before
Power-Down
V_CC Fall Time: V_PF(MAX) to
V_PF(MIN)
V_CC Rise Time: V_PF(MIN) to
V_PF(MAX)
Power-Up Recover Time
V_PF to RST High (PowerCap
Only)
Expected Data-Retention Time
(Oscillator ON)
t_PD
0
t_F
300
t_R
0
t_REC
t_DR
10
MAX
35
UNITS
µs
µs
µs
ms
years
NOTES
5, 6
POWER-UP/DOWN WAVEFORM TIMING (3.3V DEVICE)
CAPACITANCE
(T_A = +25°C)
PARAMETER
Capacitance on All Input Pins
Capacitance on All Output Pins
SYMBOL
C_IN
C_O
MIN
TYP
MAX
14
10
UNITS
pF
pF
NOTES
14 of 16