DS1642 Maxim, DS1642 Datasheet - Page 10

• Manufacturer Part Number: DS1642
• Description: The DS1642 is a 2k x 8 nonvolatile static RAM and a full-function real-time clock (RTC), both of which are accessible in a bytewide format
• Manufacturer: Maxim

POWER-UP/POWER-DOWN AC CHARACTERISTICS
(T
POWER-UP/POWER-DOWN WAVEFORM TIMING
CAPACITANCE
(T
V
V
V
Power-up Recover Time
Expected Data Retention Time
(Oscillator On)
Capacitance on All Pins (except DQ)
Capacitance on DQ Pins
CE
A
A
CC
CC
CC
= 0°C to +70°C)
= +25°C)
or
Fall Time: V
Fall Time: V
Rise Time: V
WE
at V
PARAMETER
PARAMETER
IH
PF
PF
Before Power-Down
PF
(MAX) to V
(MIN) to V
(MIN) to V
BAT
PF
PF
(MAX)
(MIN)
SYMBOL
SYMBOL
10 of 13
t
C
t
t
C
t
REC
t
t
DR
PD
FB
R
F
IN
O
MIN
MIN
300
10
10
0
0
TYP
TYP
MAX
MAX
35
10
7
UNITS
UNITS
years
ms
pF
pF
s
s
s
s
NOTES
NOTES
DS1642
4, 5