Rainbow Electronics DS2180A - Manual (Page 32)

DS2180A
041995 32/36
SERIAL PORT READ AC TIMING
CS
SCLK
SDO
t CDZ
High Z
t
CDV
NOTE:
1. Serial port write must precede a port read to provide address information.
AC ELECTRICAL CHARACTERISTICS 1 – TRANSMIT (0
°
C to 70
°
C; V
DD
= 5V + 10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
TCLK Period t
P
250 648 ns
TCLK Pulse Width t
WL
, t
WH
125 324 ns
TCLK, RCLK Rise & Fall Times t
F
, t
R
20 ns
TSER, TABCD, TLINK Setup to
TCLK Falling t
STD
50 ns
TSER, TABCD, TLINK Hold from
TCLK Falling t
HTD
50 ns
TFSYNC, TMSYNC Setup to
TCLK Rising t
STS
-125 125 ns
Propagation Delay TFSYNC to
TMO, TSIGSEL, TSIGFR, TLCLK t
PTS
75 ns
Propagation Delay TCLK to
TCHCLK t
PTCH
75 ns
TFSYNC, TMSYNC Pulse Width t
TSP
100 ns
NOTES:
1. Measured at V
IH
= 2.0V; V
IL
= .8V and 10 ns maximum rise and fall time.
2. Output load capacitance = 100 pF.