Rainbow Electronics DS1302 - Manual (Page 9)

DS1302
041697 9/12
DC ELECTRICAL CHARACTERISTICS (cont’d) (0 ° C to 70 ° C; V
CC
= 2.5 to 5.5V*)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Timekeeping Current I
CC2T
V
CC2
=2.5V 25.3
µ A 4 13 Timekeeping Current I
CC2T
V
CC2
=5V 81
µ A 4,13
Standby Current I
CC2S
V
CC2
=2.5V 25
µ A 10 13 Standby Current I
CC2S
V
CC2
=5V 80
µ A 10, 13
Trickle Charge Resistors R1
R2
R3 2
4
8 K
Ω
K
Ω
K
Ω
Trickle Charger Diode Voltage Drop V
TD
0.7 V
*Unless otherwise noted.
CAPACITANCE (t
A
= 25
°
C)
PARAMETER SYMBOL CONDITION TYP MAX UNITS NOTES
Input Capacitance C
I
10 pF
I/O Capacitance C
I/O
15 pF
Crystal Capacitance C
X
6 pF
AC ELECTRICAL CHARACTERISTICS (0
°
C to 70
°
C; V
CC
= +5V
±
10%*)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Data to CLK Setup t
DC
V
CC
=2.5V 200
ns 7 Data to CLK Setup t
DC
V
CC
=5V 50
ns 7
CLK to Data Hold t
CDH
V
CC
=2.5V 280
ns 7 CLK to Data Hold t
CDH
V
CC
=5V 70
ns 7
CLK to Data Delay t
CDD
V
CC
=2.5V 800
ns 7 8 9 CLK to Data Delay t
CDD
V
CC
=5V 200
ns 7, 8, 9
CLK Low Time t
CL
V
CC
=2.5V 1000
ns 7 CLK Low Time t
CL
V
CC
=5V 250
ns 7
CLK High Time t
CH
V
CC
=2.5V 1000
ns 7 CLK High Time t
CH
V
CC
=5V 250
ns 7
CLK Frequency t
CLK
V
CC
=2.5V 0.5
MHz 7 CLK Frequency t
CLK
V
CC
=5V DC 2.0
MHz 7
CLK Rise and Fall t
R
t
F
V
CC
=2.5V 2000
ns CLK Rise and Fall t
R
, t
F
V
CC
=5V 500
ns
RST to CLK Setup t
CC
V
CC
=2.5V 4
µ
s 7 RST to CLK Setup t
CC
V
CC
=5V 1
µ
s 7
*Unless otherwise noted.