XR16L784_08 Datasheet, PDF (43/51 Pages) Exar Corporation – HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART

XR16L784
REV. 1.2.3
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
AC ELECTRICAL CHARACTERISTICS
TA=0^O TO 70^OC (-40^O TO +85^OC FOR INDUSTRIAL GRADE PACKAGE), VCC IS 2.97V TO 5.5V, 70 PF LOAD
WHERE APPLICABLE
SYMBOL
PARAMETER
TC1,TC2 Clock Pulse Period
TOSC Oscillator Frequency
TECK External Clock Frequency
TAS Address Setup (16 Mode)
TAH Address Hold (16 Mode)
TCS Chip Select Width (16 Mode)
TDY Delay between CS# Active Cycles (16 Mode)
TRD Read Strobe Width (16 Mode)
TWR Write Strobe Width (16 Mode)
TRDV Read Data Valid (16 Mode)
TWDS Write Data Setup (16 Mode)
TRDH Read Data Hold (16 Mode)
TWDH Write Data Hold (16 Mode)
TADS Address Setup (68 Mode)
TADH Address Hold (68 Mode)
TRWS R/W# Setup to CS# (68 Mode)
TRDA Read Data Access (68 mode)
TRDH Read Data Hold (68 mode)
TWDS Write Data Setup (68 mode)
TWDH Write Data Hold (68 Mode)
TRWH CS# De-asserted to R/W# De-asserted (68 Mode)
TCSL CS# Width (68 Mode)
TCSD CS# Cycle Delay (68 Mode)
TWDO Delay from IOW# to Modem Output
TMOD Delay to set Interrupt from Modem Input
TRSI Delay To Reset Interrupt From IOR#
TSSI Delay From Stop To Set Interrupt
TRRI Delay From IOR# To Reset Interrupt
TSI Delay From Stop To Interrupt
TWRI Delay From IOW# To Reset Interrupt
TRST Reset Pulse
Bclk Baud Clock
3,3V 3.3V ^5V
5V
MIN
MAX
MIN
MAX
10
8
16
24
33
50
5
5
10
10
50
50
50
50
50
50
40
30
35
25
15
10
15
10
15
10
10
5
10
10
10
10
35
25
15
10
10
10
10
10
10
10
50
40
50
40
50
50
50
35
50
35
1
1
45
40
45
40
45
40
40
40
16X or 8X of data rate
UNITS
ns
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
Bclk
ns
ns
ns
ns
Hz
43