Rainbow-electronics DS8314 Instrukcja Użytkownika Pobierz pdf (Strona 3)

DS8313/DS8314

Smart Card Interface

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RECOMMENDED DC OPERATING CONDITIONS (continued)

= +3.3V, V

DDA

= +5.0V, T

= +25°C, unless otherwise noted. All specifications apply to both the DS8313 and DS8314, unless

otherwise noted in the CONDITIONS column.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CLOCK SOURCE

Crystal Frequency f

XTAL

External crystal (Note 1) 0 20 MHz

XTAL1

(Note 1) 0 20 MHz

IL_XTAL1

Low-level input on XTAL1 -0.3

0.3 x

XTAL1 Operating Conditions

IH_XTAL1

High-level input on XTAL1

0.7 x

0.3

External Capacitance for Crystal

XTAL1

XTAL2

15 pF

Internal Oscillator f

INT

2.2 2.7 3.4 MHz

SHUTDOWN TEMPERATURE

Shutdown Temperature T

+150 °C

RST PIN

Output Low Voltage V

OL_RST1

OL_RST

= 1mA 0 0.3 V

Card-Inactive Mode

Output Current I

OL_RST1

OL_RST

= 0 0 -1 mA

Output Low Voltage V

OL_RST2

OL_RST

= 200μA 0 0.3 V

Output High

Voltage

OH_RST2

OH_RST

= -200μA

0.5

Rise Time t

R_RST

= 30pF (Note 1) 0.1 μs

Fall Time t

F_RST

= 30pF (Note 1) 0.1 μs

Current Limitation I

RST(LIMIT)

-20 +20 mA

Card-Active Mode

RSTIN to RST Delay t

D(RSTIN-RST)

2 μs

CLK PIN

Output Low Voltage V

OL_CLK1

OLCLK

= 1mA 0 0.3 V

Card-Inactive Mode

Output Current I

OL_CLK1

OLCLK

= 0 0 -1 mA

Output Low Voltage V

OL_CLK2

OLCLK

= 200μA 0 0.3 V

Output High

Voltage

OH_CLK2

OHCLK

= -200μA

0.5

Rise Time t

R_CLK

= 30pF (Notes 1, 4) 8 ns

Fall Time t

F_CLK

= 30pF (Notes 1, 4) 8 ns

Current Limitation I

CLK(LIMIT)

-70 +70 mA

Clock Frequency f

CLK

Operational 0 10 MHz

Duty Factor  C

= 30pF 45 55 %

Card-Active Mode

Slew Rate SR C

= 30pF (Note 1) 0.2 V/ns

VCC PIN

Output Low Voltage V

CC1

= 1mA 0 0.3 V

Card-Inactive Mode

Output Current I

CC1

= 0 0 -1 mA

1 2 3 4 5 6 7 8 ... 16 17

DS8313/DS8314 1
Smart Card Interface 1

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