Rainbow-electronics DS1680 Manual do Utilizador descarregar pdf (Página 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

µA

CS Leakage I

LO

170

µA

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

µA

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

kΩ

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

µA

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

µs

8

CLK to CS Hold t

CCH

250 ns 8

CS Inactive Time t

CWH

1

µs

8

CS to I/O High-Z t

CDZ

70 ns 8

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23

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