Rainbow Electronics DS1680 - Manual (Page 17)

DS1680
17 of 23
DC ELECTRICAL CHARACTERISTICS (0
°
C to +70
°
C; V
CC
= 3.3V
±
10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Leakage I
LI
-1 +1
µ
A
CS Leakage I
LO
170
µ
A 7
Logic 1 Output (I
OUT
= -0.4mA) V
OH
2.4 V 1
Logic 0 Output (I
OUT
= 1.5mA) V
OL
0.4 V 2
Active Supply Current (No Pen Detect) I
CCA
115 300 µA 3
Active Supply Current (Pen Detected) I
CCPD
3 mA 19
Standby Current I
CCS
110 200
µ
A 4
Oscillator Current I
OSC
300 500 nA 17
Battery Current (Oscillator Off) I
BAT
100 nA 18
Internal RST Pullup Resistor R
P
25 47 87 k
Ω
V
CC
Trip Point V
CCTP
2.75 2.86 2.97 V
V
CC
Switchover V
CCSW
2.67 2.78 V 12, 20
Pushbutton Detect PB
DV
0.8 2.0 V
Pushbutton Release PB
RD
0.3 0.8 V
Output Voltage V
CCO
V
CC
-0.3 V 11
V
CCO
Output Current (Source = V
CC
) I
CCO1
80 mA 13
V
CCO
Output Current (Source = V
BAT)
I
CCO2
100
µ
A 14
PFI Input Threshold V
PFI
1.15 1.25 1.35 V
PFI Input Leakage I
PFI
-25 25 nA
PFO Output Voltage, I
OH
= -0.4mA V
OH
V
CC
-1.5 V
PFO Output Voltage, I
OL
=1.5mA
V
OL
0.4 V
CAPACITANCE (T
A
= +25
°
C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
I
10 pF
I/O Capacitance C
I/O
15 pF
Crystal Capacitance C
X
6 pF
3-WIRE INTERFACE CHARACTERISTICS (0
°
C to +70
°
C; V
CC
= 5.0V
±
10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Data to Clock Setup t
DC
50 ns 8
CLK to Data Hold t
CDH
70 ns 8
CLK to Data Delay t
CDD
200 ns 8, 9, 10
CLK to Low Time t
CL
250 ns 8
CLK to High Time t
CH
250 ns 8
CLK Frequency t
CLK
2.0 MHz 8
CLK Rise and Fall t
R
, t
F
500 ns
CS to CLK Setup t
CC
1
µ
s 8
CLK to CS Hold t
CCH
250 ns 8
CS Inactive Time t
CWH
1
µ
s 8
CS to I/O High- Z t
CDZ
70 ns 8