xr16v554 Exar Corporation, xr16v554 Datasheet - Page 32

• Manufacturer Part Number: xr16v554
• Description: 2.25v To 3.6v Quad Uart With 16-byte Fifo
• Manufacturer: Exar Corporation

XR16V554/554D
2.25V TO 3.6V QUAD UART WITH 16-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
TA = -40
F
IGURE
S
YMBOL
T
T
T
T
T
T
T
T
Bclk
T
T
SSR
RST
WRI
SRT
RRI
SSI
INT
WT
RR
EXTERNAL
SI
CLOCK
12. C
O
TO
Delay From Stop To Set Interrupt
Delay From IOR# To Reset Interrupt
Delay From Start To Interrupt
Delay From Initial INT Reset To Transmit Start
Delay From IOW# To Reset Interrupt
Delay From Stop To Set RXRDY#
Delay From IOR# To Reset RXRDY#
Delay From IOW# To Set TXRDY#
Delay From Center of Start To Reset TXRDY#
Reset Pulse Width
Baud Clock
+85
LOCK
O
C, V
T
IMING
CC IS
2.25
P
TO
CLK
ARAMETER
3.6V, 70
OSC
P
F
LOAD WHERE APPLICABLE
CLK
32
40
2.5V ± 10%
M
8
IN
L
IMITS
M
16X data rate
AX
45
45
24
45
45
45
1
1
8
40
3.3V ± 10%
M
8
IN
L
IMITS
M
AX
45
45
24
45
45
45
1
1
8
REV. 1.0.2
U
Bclk
Bclk
Bclk
Bclk
Hz
ns
ns
ns
ns
ns
ns
NIT