Datasheet

SPI/MICROWIRE-Compatible
UART in QSOP-16
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
C
LOAD
= 100pF
C
LOAD
= 100pF, R
CS
= 10kΩ
C
LOAD
= 100pF
CONDITIONS
ns100t
CL
SCLK Low Time
ns100t
CH
SCLK High Time
ns238t
CP
SCLK Period
ns0t
DH
DIN to SCLK Hold Time
ns100t
DS
DIN to SCLK Setup Time
ns100t
DO
SCLK Fall to DOUT Valid
ns0t
CSH
CS to SCLK Hold Time
ns100t
CSS
CS to SCLK Setup Time
ns100t
TR
CS High to DOUT Tri-State
ns100t
DV
CS Low to DOUT Valid
UNITSMIN TYP MAXSYMBOLPARAMETER
TX, RTS, DOUT: C
LOAD
= 100pF
(Note 1)
ns10t
r
Output Rise Time
ns200t
CSW
CS High Pulse Width
ns100t
CS0
SCLK Rising Edge
to CS Falling
(Note 1) ns200t
CS1
CS Rising Edge
to SCLK Rising
• • •
• • •
• • •
• • •
CS
SCLK
DIN
DOUT
t
CSH
t
CSS
t
CL
t
DS
t
DH
t
DV
t
CH
t
DO
t
TR
t
CSH
Figure 1. Detailed Serial-Interface Timing
TX, RTS, DOUT, IRQ: C
LOAD
= 100pF
ns10t
f
Output Fall Time
AC TIMING (Figure 1)
Note 1: t
CS0
and t
CS1
specify the minimum separation between SCLK rising edges used to write to other devices on the SPI bus
and the CS used to select the MAX3100. A separation greater than t
CS0
and t
CS1
ensures that the SCLK edge is ignored.
MAX3100
Maxim Integrated
3
MAX3100