NS16C2552TVA NSC [National Semiconductor], NS16C2552TVA Datasheet - Page 38

• Manufacturer Part Number: NS16C2552TVA
• Description: Dual UART with 16-byte/64-byte FIFOs and up to 5 Mbit/s Data Rate
• Manufacturer: NSC [National Semiconductor]

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10.0 DC and AC Specifications
Note 1: Maximum ratings indicate limits beyond which permanent damage may occur. Continuous operation at these limits is not intended and should be limited
to those conditions specified under DC electrical characteristics.
Note 2: The B
Symbol
t
t
t
t
t
t
t
t
t
t
MDO
RINT
t
t
SINT
t
WST
t
t
t
t
SXA
SSR
SIM
RIM
WXI
WR
RXI
DY
DS
DH
STI
HR
HZ
CLK
Parameter
Data Disable Time
WR Strobe Width
Write Cycle Delay
Data Setup Time
Data Hold Time
Delay from WR to Output
Delay from Modem input to
Interrupt output
Delay to Reset interrupt from
RD falling edge
Delay from Stop to Interrupt
Set
Delay from of RD to Reset
Interrupt
Delay from center of Start to
INTR Set
Delay from WR to Transmit
Start
Delay from WR to interrupt
clear
Delay from WR to TXRDY
rising edge
Delay from Center of Start to
TXRDY falling edge
Delay from Stop to RXRDY
falling edge
Delay from /RD to RXRDY
rising edge
period decreases with increasing reference clock input. At higher clock input frequency, the number of B
Condition
Line Receive and Transmit
(Note 2)
(Continued)
Modem Control
DMA Interface
38
Min
35
35
12
0
4
0
3.3V Limits
Max
18
20
20
23
45
16
16
34
27
27
4
8
4
Min
24
24
12
0
4
0
5.0V Limits
CLK
increases.
Max
18
15
15
17
30
10
16
22
18
18
4
8
4
Units
Bclk
Bclk
Bclk
Bclk
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns