XR16V2651_07 Datasheet, PDF (39/51 Pages) Exar Corporation – HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE

REV. 1.0.2
XR16V2651
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: TA = -40^O TO +85^OC, VCC=2.25 - 3.63V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
XTAL1 UART Crystal Oscillator
LIMITS
2.5V ± 10%
MIN
MAX
32
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_ADS
T_ADH
T_RWS
T_RDA
T_RDH
T_WDS
T_WDH
T_RWH
T_CSL
T_CSD
T_WDO
T_MOD
T_RSI
T_SSI
T_RRI
External Clock
External Clock Time Period
Address Setup Time (16 mode)
Address Hold Time (16 mode)
Chip Select Width (16 mode)
IOR# Strobe Width (16 mode)
Read Cycle Delay (16 mode)
Data Access Time (16 mode)
Data Disable Time (16 mode)
IOW# Strobe Width (16 mode)
Write Cycle Delay (16 mode)
Data Setup Time (16 mode)
Data Hold Time (16 mode)
Address Setup (68 Mode)
Address Hold (68 Mode)
R/W# Setup to CS# (68 Mode)
Read Data Access (68 mode)
Read Data Disable (68 mode)
Write Data Setup (68 mode)
Write Data Hold (68 Mode)
CS# De-asserted to R/W# De-asserted (68 Mode)
CS# Width (68 Mode)
CS# Cycle Delay (68 Mode)
Delay From IOW# To Output
Delay To Set Interrupt From MODEM Input
Delay To Reset Interrupt From IOR#
Delay From Stop To Set Interrupt
Delay From IOR# To Reset Interrupt
50
64
10
7
0
0
0
0
40
35
40
35
40
35
35
30
25
25
40
35
40
35
10
10
3
3
0
0
0
0
0
0
35
30
25
25
10
10
3
3
5
5
40
35
40
35
50
50
50
50
50
50
1
1
45
45
UNIT
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Bclk
ns
39