XR16L580
39
REV. 1.4.2
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: TA=0O TO 70OC (-40O TO +85OC FOR INDUSTRIAL GRADE PACKAGE), VCC=2.25 - 5.5V,
50 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
LIMITS
2.5V
MIN
MAX
LIMITS
3.3V
MIN
MAX
LIMITS
5.0V
MIN
MAX
UNIT
-
Crystal Frequency
18
20
24
MHz
OSC
External Clock Frequency
24
33
50
MHz
CLK
External Clock Low/High Time
20
15
10
ns
TAS
Address Setup Time (16 Mode)
5
10
ns
TAH
Address Hold Time (16 Mode)
0
ns
TCS
Chip Select Width (16 Mode)
100
50
30
ns
TRD
IOR# Strobe Width (16 Mode)
100
50
30
ns
TDY
Read Cycle Delay (16 Mode)
100
50
30
ns
TRDV
Data Access Time (16 Mode)
75
50
25
ns
TDD
Data Disable Time (16 Mode)
0
30
0
20
0
20
ns
TWR
IOW# Strobe Width (16 Mode)
100
50
30
ns
TDY
Write Cycle Delay (16 Mode)
100
50
30
ns
TDS
Data Setup Time (16 Mode)
25
15
12
ns
TDH
Data Hold Time (16 Mode)
3
5
ns
TADS
Address Setup (68 Mode)
5
10
ns
TADH
Address Hold (68 Mode)
0
ns
TRWS
R/W# Setup to CS# (68 Mode)
10
ns
TRDA
Read Data Access (68 mode)
75
50
25
ns
TRDH
Read Data Disable Time (68 mode)
30
20
ns
TWDS
Write Data Setup (68 mode)
25
15
12
ns
TWDH
Write Data Hold (68 Mode)
3
5
ns
TRWH
CS# De-asserted to R/W# De-asserted (68
Mode)
10
ns
TCSL
CS# Width (68 Mode)
100
50
30
ns
TCSD
CS# Cycle Delay (68 Mode)
100
50
30
ns
TWDO
Delay From IOW# To Output
150
75
50
ns
TMOD
Delay To Set Interrupt From MODEM Input
150
75
50
ns
TRSI
Delay To Reset Interrupt From IOR#
150
75
50
ns
TSSI
Delay From Stop To Set Interrupt
1
Bclk