XR18W750
REV. 1.0.0
WIRELESS UART CONTROLLER
AC ELECTRICAL CHARACTERISTICS
U NLESS OTHERWISE NOTED : TA=0 O TO 70 O C (-40 O TO +85 O C FOR INDUSTRIAL GRADE PACKAGE ), V CC =2.25 -
3.63V, 70 P F LOAD WHERE APPLICABLE
L IMITS
L IMITS
S YMBOL
P ARAMETER
2.5V ± 10%
M IN
M AX
3.3V ± 10%
M IN
M AX
U NIT
T INT
Delay From Initial INT Reset To Transmit Start
8
24
8
24
Bclk
T WRI
T SSR
T RR
T WT
T SRT
T RST
Delay From IOW# To Reset Interrupt
Delay From Stop To Set RXRDY#
Delay From IOR# To Reset RXRDY#
Delay From IOW# To Set TXRDY#
Delay From Center of Start To Reset TXRDY#
Reset Pulse Width
40
45
1
45
45
8
40
45
1
45
45
8
ns
Bclk
ns
ns
Bclk
ns
Bclk
Baud Clock
16X of data rate
Hz
F IGURE 11. M ODEM I NPUT /O UTPUT T IMING
IOW #
Active
T W DO
RTS#
DTR#
Change of state
Change of state
CD#
CTS#
DSR#
T MO D
Change of state
Change of state
T M OD
INT
Active
Active
Active
T RSI
IOR#
Active
Active
Active
T M OD
RI#
37
Change of state
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