XR18W750 Datasheet, PDF (37/44 Pages) Exar Corporation – WIRELESS UART CONTROLLER

REV. 1.0.0
AC ELECTRICAL CHARACTERISTICS
XR18W750
WIRELESS UART CONTROLLER
UNLESS OTHERWISE NOTED: TA=0^O TO 70^OC (-40^O TO +85^OC FOR INDUSTRIAL GRADE PACKAGE), VCC=2.25 -
3.63V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
T_INT
T_WRI
T_SSR
T_RR
T_WT
T_SRT
T_RST
Bclk
Delay From Initial INT Reset To Transmit Start
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
Baud Clock
LIMITS
2.5V ± 10%
MIN
MAX
8
24
LIMITS
3.3V ± 10%
MIN
MAX
8
24
45
45
1
1
45
45
45
45
8
8
40
40
16X of data rate
UNIT
Bclk
ns
Bclk
ns
ns
Bclk
ns
Hz
FIGURE 11. MODEM INPUT/OUTPUT TIMING
IOW #
RTS#
DTR#
Active
Change of state
T _{W DO}
Change of state
CD#
CTS#
DSR#
INT
IOR#
RI#
T_MOD
Change of state
Change of state
Active
Active
T_MOD
T_RSI
Active
Active
Active
Active
T_MOD
Change of state
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