XR16V794 Datasheet, PDF (44/53 Pages) Exar Corporation – HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL

XR16V794
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL BAUD RATE
REV. 1.0.0
AC ELECTRICAL CHARACTERISTICS
TA=0^o to 70^oC (-40^o to +85^oC for industrial grade package), Vcc is 2.25V to 3.6V, 70 pF Load where applicable
SYMBOL
PARAMETER
2.5V
MIN
2.5V
MAX
3.3V
MIN
3.3V
MAX
UNITS
T_C1,T_C2 Clock Pulse Period
T_OSC Crystal Frequency
T_ECK External Clock Frequency
T_AS Address Setup (16 Mode)
T_AH Address Hold (16 Mode)
T_CS Chip Select Width (16 Mode)
T_DY Delay between CS# Active Cycles (16 Mode)
T_RD Read Strobe Width (16 Mode)
T_WR Write Strobe Width (16 Mode)
T_RDV Read Data Valid (16 Mode)
T_WDS Write Data Setup (16 Mode)
T_RDH Read Data Hold (16 Mode)
T_WDH Write Data Hold (16 Mode)
T_ADS Address Setup (68 Mode)
T_ADH Address Hold (68 Mode)
T_RWS R/W# Setup to CS# (68 Mode)
T_RDA Read Data Access (68 mode)
T_RDH Read Data Hold (68 mode)
T_WDS Write Data Setup (68 mode)
T_WDH Write Data Hold (68 Mode)
T_RWH CS# De-asserted to R/W# De-asserted (68 Mode)
T_CSL CS# Width (68 Mode)
T_CSD CS# Cycle Delay (68 Mode)
T_WDO Delay from IOW# to Modem Output
T_MOD Delay to set Interrupt from Modem Input
T_RSI Delay To Reset Interrupt From IOR#
T_SSI Delay From Stop To Set Interrupt
T_RRI Delay From IOR# To Reset Interrupt
10
7
ns
24
24
MHz
50
64
MHz
3
3
ns
3
3
ns
25
25
ns
25
25
ns
25
25
ns
20
20
ns
20
20
ns
10
10
ns
15
15
ns
7
7
ns
3
3
ns
3
3
ns
3
3
ns
20
20
ns
15
15
ns
10
10
ns
7
7
ns
1
1
ns
25
25
ns
25
25
ns
50
50
ns
50
50
ns
50
50
ns
1
1
Bclk
45
45
ns
44