Rainbow Electronics DS1384 - Manual (Page 13)

DS1384
13 of 17
CAPACITANCE (t
A
= 25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Capacitance on all pins
(except DQ) C
I
7 15 pF
Capacitance on DQ pins C
DQ
7 15 pF
AC ELECTRICAL CHARACTERISTICS (0°C to 70°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CE at V
IH
before Power
Down
t
PD
0 µs
V
PF
(Max) to V
PF
(Min)
V
CC
Fall Time
t
F
300 µs
V
PF
(Min) to V
SO
V
CC
Fall
Time
t
FB
10 µs
V
PF
(Min) to V
PF
(Max)
V
CC
Rise Time
t
R
0 µs
Power Up t
REC
10 150 ms
Expected Data Retention
Time (Oscillator On) t
DR
10 years 7
READ CYCLE TIMING: RTC AND EXTERNAL SRAM CONTROL SIGNALS