XR16L570
36
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
REV. 1.0.1
NOTE: * For faster data rates, see the data rate characterization data on page 38. AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: TA= -40
O TO +85OC, VCC=2.97 - 5.5V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
LIMITS
3.3
MIN
MAX
LIMITS
5.0
MIN
MAX
UNIT
-
Crystal Oscillator Frequency
20
24
MHz
OSC
External Clock Frequency*
33
50
MHz
CLK
External Clock Low/High Time*
15
10
ns
TAS
Address Setup Time
5
10
ns
TAH
Address Hold Time
0
ns
TCS
Chip Select Width
50
30
ns
TRD
IOR# Strobe Width
50
30
ns
TDY
Read Cycle Delay
50
30
ns
TRDV
Data Access Time
50
25
ns
TDD
Data Disable Time
0
20
0
20
ns
TWR
IOW# Strobe Width
50
30
ns
TDY
Write Cycle Delay
50
30
ns
TDS
Data Setup Time
15
12
ns
TDH
Data Hold Time
3
5
ns
TWDO
Delay From IOW# To Output
75
50
ns
TMOD
Delay To Set Interrupt From MODEM Input
75
50
ns
TRSI
Delay To Reset Interrupt From IOR#
75
50
ns
TSSI
Delay From Stop To Set Interrupt
1
Bclk
TRRI
Delay From IOR# To Reset Interrupt
75
50
ns
TSI
Delay From Stop To Interrupt
75
50
ns
TINT
Delay From Initial INT Reset To Transmit Start
8
24
8
24
Bclk
TWRI
Delay From IOW# To Reset Interrupt
75
50
ns
TRST
Reset Pulse Width
40
ns
N
Baud Rate Divisor
1
216-1
1
216-1
-
Bclk
Baud Clock
16X of data rate
Hz