ISL1561 Datasheet, PDF (11/13 Pages) Intersil Corporation – 3 pin serial port interface

ISL1561
PARAMETER
t
t_r/t_f
t_HC
t_SD
t_HC
t_SC
t_W
TABLE 1. SERIAL TIMING DIAGRAM
RECOMMENDED OPERATING RANGE
≥100ns
0.05*t
≥7ns
≥10ns
≥2.8ns
≥0.5ns
0.50*t
DESCRIPTION
Clock Period
Clock Rise/Clock Fall
Data Hold Time
Data Setup Time
CS Hold Time
CS Setup Time
Clock Pulse Width
Boost Control
Table 2 summarizes the logic of register MSB on boost operations followed by Figure 29 with the recommended look ahead timing for
the boost signal.
Reg3 8’h[7]
0
X
1
X
NOTE: X = do not care
TABLE 2. REGISTER MSB ON BOOST OPERATION
Reg7 8’h[7]
BOOST PIN
X
1
0
1
1
X
X
0
BOOST OPERATION
1
1
0
0
SIGNAL
PARAMETER
t_d
t_d
BOOST
FIGURE 29. SERIAL TIMING DIAGRAM
TABLE 3. EXTERNAL BOOST SIGNAL TIMING PARAMETERS
RECOMMENDED OPERATING RANGE
100ns
DESCRIPTION
Look ahead boost
11
FN7941.1
February 26, 2013