XR16M2751_07 Datasheet, PDF (43/53 Pages) Exar Corporation – 1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO

XR16M2751
REV. 1.0.0
1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: TA=0^O TO 70^OC (-40^O TO +85^OC FOR INDUSTRIAL GRADE PACKAGE), VCC=1.62 -
3.63V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
T_RSI
T_SSI
T_RRI
T_SI
T_INT
T_WRI
T_SSR
T_RR
T_WT
T_SRT
T_RST
Bclk
PARAMETER
Delay To Reset Interrupt From IOR#
LIMITS
1.8V ± 10%
MIN
MAX
LIMITS
2.5V ± 10%
MIN
MAX
LIMITS
3.3V ± 10%
MIN
MAX
50
50
50
Delay From Stop To Set Interrupt
1
1
1
Delay From IOR# To Reset Interrupt
45
45
45
Delay From Stop To Interrupt
45
45
45
Delay From Initial INT Reset To Transmit Start 8
24
8
24
8
24
Delay From IOW# To Reset Interrupt
45
45
45
Delay From Stop To Set RXRDY#
1
1
1
Delay From IOR# To Reset RXRDY#
45
45
45
Delay From IOW# To Set TXRDY#
45
45
45
Delay From Center of Start To Reset TXRDY#
8
8
8
Reset Pulse Width
40
40
40
Baud Clock
16X or 8X of data rate
UNIT
ns
Bclk
ns
ns
Bclk
ns
Bclk
ns
ns
Bclk
ns
Hz
FIGURE 13. CLOCK TIMING
T_ECLK
VIH
External
Clock
VIL
T_ECH
T_ECL
43