Rainbow-electronics DS1726 Instrukcja Użytkownika Pobierz pdf (Strona 4)

DS1626/DS1726

4 of 13

EEPROM AC ELECTRICAL CHARACTERISTICS

= 2.7V to 5.5V; T

= -55°C to +125°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

EEPROM Write Cycle Time t

410ms

EEPROM Writes N

EEWR

-55°C to +55°C 50k Writes

EEPROM Data Retention t

EEDR

-55°C to +55°C 10 Years

AC ELECTRICAL CHARACTERISTICS

= 2.7V to 5.5V; T

= -55°C to +125°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

9-bit 93.75

10-bit 187.5

11-bit 375

Temperature Conversion Time t

12-bit 750

Data In to Clock Setup t

(Note 5) 35 ns

Clock to Data In Hold t

CDH

(Note 5) 40 ns

Clock to Data Out Delay t

CDD

(Notes 5, 6) 150 ns

Clock Low/High Time t

, t

(Note 5) 285 ns

Clock Frequency f

CLK

(Note 5) 0 1.75 MHz

Clock Rise/Fall Time t

, t

(Note 5) 500 ns

RST to Clock Setup t

(Note 5) 100 ns

Clock to RST Hold

CRH

(Note 5) 40 ns

RST Inactive Time t

(Note 7) 125 ns

Clock High to I/O Hi-Z t

CDZ

(Note 5) 50 ns

RST Low to I/O Hi-Z t

RDZ

(Note 5) 50 ns

CNV Pulse Width t

CNV

(Note 8) 250ns 500ms

I/O Capacitance C

I/O

10 pF

Input Capacitance C

5pF

NOTES:

1) All voltages are referenced to ground.

2) See Figure 2 for TYPICAL OPERATING CURVES.

3) I

STBY

, I

specified with DQ, CLK/CNV = V

and RST = GND.

4) Drift data is based on a 1000hr stress test at +125°C with V

= 5.5V.

5) See Timing Diagrams in Figure 3. All timing is referenced to 0.7 x V

and 0.3 x V

6) Load capacitance = 50pF.

7) t

must be 10ms minimum following any write command that involves the E

memory.

8) 250ns is the guaranteed minimum pulse width for a conversion to start, however, a smaller pulse

width may start a conversion.

1 2 3 4 5 6 7 8 9 ... 12 13

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