Instruction Manual

CS5581
DS796PP1 9
3/25/08
14:34
SWITCHING CHARACTERISTICS (CONTINUED)
T
A
= -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V, ±5%;
VL - VLR = 3.3 V, ±5%, 2.5 V, ±5%, or 1.8 V, ±5%
Input levels: Logic 0 = 0V = Low; Logic 1 = VD+ = High; CL = 15 pF.
15. SDO will be high impedance when CS is high. In some systems SDO may require a pull-down resistor.
Parameter Symbol Min Typ Max Unit
Serial Port Timing in SEC Mode (SMODE = VLR)
SCLK(in) Pulse Width (High)
-
30 - - ns
SCLK(in) Pulse Width (Low)
-
30 - - ns
CS
hold time (high) after RDY falling t
15
10 - - ns
CS
hold time (high) after SCLK rising t
16
10 - - ns
CS
low to SDO out of Hi-Z (Note 15) t
17
-10-ns
Data hold time after SCLK rising t
18
-10-ns
Data setup time before SCLK rising t
19
10 - - ns
CS
hold time (low) after SCLK rising
t
20
10 - ns
RDY
rising after SCLK falling t
21
-10-ns
1
SCLK
10
MCLK
SCLK(i)
SDO
CS
RDY
LSBMSB
t
19
t
18
t
20
t
17
t
16
t
15
t
21
Figure 3. SEC Mode - Continuous SCLK Read Timing (Not to Scale)