ST16C2450 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'ST16C2450' PDF : 30 Pages View PDF
xr
REV. 4.0.1
ST16C2450
2.97V TO 5.5V DUART
AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: 0O TO 70OC (-40O TO +85OC FOR INDUSTRIAL GRADE PACKAGE), VCC IS 2.97V TO
5.5V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
LIMITS
3.3
MIN
MAX
LIMITS
5.0
MIN
MAX
UNIT
-
Crystal Frequency
16
24 MHz
CLK External Clock Low/High Time
25
21
ns
OSC External Clock Frequency
20
24 MHz
TAS
TAH
TCS
TRD
TDY
TRDV
TDD
Address Setup Time
Address Hold Time
Chip Select Width
IOR# Strobe Width
Read Cycle Delay
Data Access Time
Data Disable Time
5
0
ns
10
5
ns
66
50
ns
35
25
ns
40
30
ns
35
25
ns
0
25
0
15
ns
TWR IOW# Strobe Width
40
25
ns
TDY
TDS
TDH
TWDO
TMOD
TRSI
TSSI
TINT
TWRI
TRST
N
Write Cycle Delay
Data Setup Time
Data Hold Time
Delay From IOW# To Output
Delay To Set Interrupt From MODEM Input
Delay To Reset Interrupt From IOR#
Delay From Stop To Set Interrupt
Delay From Initial INT Reset To Transmit Start
Delay From IOW# To Reset Interrupt
Reset Pulse Width
Baud Rate Divisor
40
30
ns
20
15
ns
5
5
ns
50
40
ns
40
35
ns
40
35
ns
1
1
Bclk
8
24
8
24 Bclk
45
40
ns
40
40
ns
1
216-1
1
216-1
-
Bclk Baud Clock
16X of data rate
Hz
21
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