XR16M654 Datasheet, PDF (43/58 Pages) Exar Corporation – 1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO

REV. 1.0.0
XR16M654/654D
1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
TA = -40^O TO +85^OC, VCC IS 1.62 TO 3.63V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
LIMITS
1.8V ± 10%
MIN
MAX
LIMITS
2.5V ± 10%
MIN
MAX
XTAL1 UART Crystal Frequency
24
24
ECLK External Clock Frequency
32
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)
15
10
0
0
0
0
100
65
100
65
100
65
95
60
15
15
T_WR IOW# Strobe Width (16 Mode)
100
65
T_DY
Write Cycle Delay (16 Mode)
100
65
T_DS
Data Setup Time (16 Mode)
15
10
T_DH
Data Hold Time (16 Mode)
3
3
T_ADS
T_ADH
T_RWS
T_RDA
T_RDH
T_WDS
T_WDH
T_RWH
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)
0
0
0
0
0
0
95
60
15
15
15
10
3
5
3
3
T_CSL CS# Strobe Width (68 Mode)
100
65
T_CSD CS# Cycle Delay (68 Mode)
100
65
T_WDO Delay From IOW# To Output
50
50
T_MOD Delay To Set Interrupt From MODEM
50
50
Input
LIMITS
3.3V ± 10%
MIN
MAX
24
64
7
0
0
50
50
50
45
15
50
50
10
3
0
0
0
45
15
10
5
3
UNIT
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
50
ns
50
ns
50
ns
50
ns
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