Rainbow-electronics DS1673 Bedienungsanleitung PDF herunterladen (Seite 14)

DS1673

14 of 18

AC ELECTRICAL 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

60 ns 8

CS Inactive Time t

CWH

1

µs

8

CS to I/O High-Z t

CDZ

70 ns 8

V

CC

Slew Rate (4.5V to 2.3V) t

F

1ms

V

CC

Slew Rate (2.3V to 4.5V) t

R

0ns

V

CC

Detect to RST (V

CC

Falling)

t

RPD

100 ns

Reset Active Time t

RST

250 ms 15

Pushbutton Debounce PB

DB

250 ms 15

V

CC

Detect to RST (V

CC

Rising)

t

RPU

250 ms 15, 16

ST Pulse Width

t

ST

20 ns

Chip Enable Propagation Delay to

External SRAM

t

CED

815 ns

Nominal Voltage to V

CC

Switchover

Fall Time

t

FB

200

µs

1 2 ... 9 10 11 12 13 14 15 16 17 18

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