S P I/Mic ro w ire -Co m p a t ib le
UART in QS OP -1 6
MAX310
ELECTRICAL CHARACTERISTICS (continued)
(V = +2.7V to +5.5V, T = T
to T , unless otherwise noted. Typical values are at T = +25°C.)
MAX A
A
MIN
CC
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
AC TIMING (Figure 1)
CS Low to DOUT Valid
t
C
= 100pF
LOAD
100
100
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DV
CLOAD = 100pF, R
= 10kΩ
t
CS High to DOUT Tri-State
CS to SCLK Setup Time
CS to SCLK Hold Time
SCLK Fall to DOUT Valid
DIN to SCLK Setup Time
DIN to SCLK Hold Time
SCLK Period
CS
TR
t
100
0
CSS
t
CSH
t
C
= 100pF
LOAD
100
DO
t
DS
100
0
t
DH
t
CP
238
100
100
SCLK High Time
t
CH
SCLK Low Time
t
CL
SCLK Rising Edge
to CS Falling
t
t
(Note 1)
(Note 1)
100
ns
ns
CS0
CS1
CS Rising Edge
to SCLK Rising
200
200
t
ns
ns
ns
CS High Pulse Width
Output Rise Time
Output Fall Time
CSW
t
r
10
10
TX, RTS, DOUT: C
= 100pF
LOAD
t
f
TX, RTS, DOUT, IRQ: C
= 100pF
LOAD
Note 1: t
and t
specify the minimum separation between SCLK rising edges used to write to other devices on the SPI bus
CS0
CS1
and the CS used to select the MAX3100. A separation greater than t
and t
ensures that the SCLK edge is ignored.
CS0
CS1
• • •
CS
t
t
CH
t
CSH
CSS
t
t
CL
CSH
SCLK
• • •
t
DS
t
DH
DIN
• • •
t
DV
t
DO
t
TR
DOUT
• • •
Figure 1. Detailed Serial-Interface Timing
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
