XR16V564_07 Datasheet, PDF (41/55 Pages) Exar Corporation – 2.25V TO 3.6V QUAD UART WITH 32-BYTE FIFO

REV. 1.0.2
XR16V564/564D
2.25V TO 3.6V QUAD UART WITH 32-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
TA = -40^O TO +85^OC, VCC IS 2.25 TO 3.6V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
LIMITS
2.5V ± 10%
MIN
MAX
XTAL1 UART Crystal Frequency
24
ECLK External Clock Frequency
50
T_ECLK
T_AS
T_AH
T_CS
T_RD
T_DY
T_RDV
T_DD
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)
10
0
0
50
50
50
45
10
T_WR IOW# Strobe Width (16 Mode)
50
T_DY
Write Cycle Delay (16 Mode)
50
T_DS
Data Setup Time (16 Mode)
15
T_DH
Data Hold Time (16 Mode)
5
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
Address Setup (68 Mode)
Address Hold (68 Mode)
R/W# Setup to CS# (68 Mode)
Data Access Time (68 mode)
Data Disable Time (68 mode)
Write Data Setup (68 mode)
Write Data Hold (68 Mode)
CS# De-asserted to R/W# De-asserted (68 Mode)
CS# Strobe 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#
0
0
0
45
10
10
5
10
50
50
50
50
50
LIMITS
3.3V ± 10%
MIN
MAX
24
64
7
0
0
40
40
40
35
10
40
40
15
5
0
0
0
35
10
10
5
5
40
40
50
50
50
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
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