XR16M2752_07 Datasheet, PDF (41/51 Pages) Exar Corporation – 1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO

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XR16M2752
1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: TA=-40^O TO +85^OC, VCC=1.62 - 3.63V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
XTAL1 UART Crystal Oscillator
LIMITS
1.8V ± 10%
MIN
MAX
24
LIMITS
2.5V ± 10%
MIN
MAX
24
LIMITS
3.3V ± 10%
MIN
MAX
24
ECLK
T_ECLK
T_AS
T_AH
T_CS
T_RD
T_DY
T_RDV
T_DD
T_WR
T_DY
T_DS
T_DH
T_WDO
T_MOD
External Clock
External Clock Time Period
Address Setup Time
Address Hold Time
Chip Select Width
IOR# Strobe Width
Read Cycle Delay
Data Access Time
Data Disable Time
IOW# Strobe Width
Write Cycle Delay
Data Setup Time
Data Hold Time
Delay From IOW# To Output
Delay To Set Interrupt From
MODEM Input
32
50
64
10
10
7
0
0
0
0
0
0
50
50
40
50
50
40
50
50
40
45
45
35
25
25
25
50
50
40
50
50
40
10
10
10
3
3
3
50
50
50
50
50
50
T_RSI Delay To Reset Interrupt From
IOR#
50
50
50
T_SSI
Delay From Stop To Set Interrupt
1
1
1
T_RRI Delay From IOR# To Reset Inter-
45
45
45
rupt
T_SI
Delay From Stop To Interrupt
45
45
45
T_INT
Delay From Initial INT Reset To
8
24
8
24
8
24
Transmit Start
T_WRI Delay From IOW# To Reset Inter-
45
45
45
rupt
T_SSR Delay From Stop To Set RXRDY#
1
1
1
T_RR
Delay From IOR# To Reset
RXRDY#
45
45
45
T_WT
Delay From IOW# To Set TXRDY#
45
45
45
T_SRT
Delay From Center of Start To
Reset TXRDY#
8
8
8
UNIT
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Bclk
ns
ns
Bclk
ns
Bclk
ns
ns
Bclk
41