XR16M780 Datasheet, PDF (46/58 Pages) Exar Corporation – 1.62V TO 3.63V HIGH PERFORMANCE UART WITH 64-BYTE FIFO

XR16M780
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 64-BYTE FIFO
REV. 1.0.0
PAGE 23. To achieve minimum power drain, the voltage at any of the inputs of the M780 should NOT be lower than its VCC
supply.
AC ELECTRICAL CHARACTERISTICS
TA = -40^O TO +85^OC, VCC IS 1.62 TO 3.6V, 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
30
50
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
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)
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)
15
9
0
0
0
0
90
60
90
60
90
60
85
55
25
10
90
60
90
60
30
15
3
3
5
0
0
0
0
0
85
55
15
15
15
10
3
3
3
3
T_CSL
T_CSD
T_WDO
CS# Strobe Width (68 Mode)
CS# Cycle Delay (68 Mode)
Delay From IOW# To Output
90
60
90
60
50
50
LIMITS
3.3V ± 10%
MIN
MAX
24
64
7
0
0
35
35
35
30
5
35
35
10
3
0
0
0
30
15
10
3
3
UNIT
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
35
ns
35
ns
50
ns
46