NS16C2552TVAX/NOPB National Semiconductor, NS16C2552TVAX/NOPB Datasheet - Page 8

• Manufacturer Part Number: NS16C2552TVAX/NOPB
• Description: IC UART DUAL 16BYTE 44-PLCC
• Manufacturer: National Semiconductor

Specifications of NS16C2552TVAX/NOPB

• Features: Programmable
• Number Of Channels: 2, DUART
• Fifo's: 16 Byte
• Voltage - Supply: 2.97 V ~ 5.5 V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NS16C2552TVAX

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XIN
XOUT
MR
VCC
GND
NC
5.3 CLOCK AND RESET
5.4 POWER AND GROUND
Signal
Name
Signal
Name
Type
O
I
I
Type
I
I
I
PLCC
Pin #
11
13
21
PLCC
Pin #
N/A
33
44
12
22
TQFP
Pin #
16
5
7
TQFP
Pin #
29
42
17
19
37
6
External Crystal Input:
XIN input is used in conjunction with XOUT to form a feedback circuit for the baud
rate generator's oscillator. If a clock signal is generated off-chip, then it should drive
the baud rate generator through this pin. Refer to Section 7.1 CLOCK INPUT.
External Crystal Output:
XOUT output is used in conjunction with XIN to form a feedback circuit for the baud
rate generator's oscillator. If the clock signal is generated off-chip, then this pin is
unused. Refer to Section 7.1 CLOCK INPUT.
Master Reset:
When MR input is high, it clears all the registers including Tx and Rx serial shift
registers (except the Receiver Buffer, Transmitter Holding, and Divisor Latches).
The output signals, such as OUT2, RTS, DTR, INTR, and SOUT are also affected
by an active MR input. (Refer to Table 26 and Section 7.2 RESET).
V
+2.97V to +5.5V supply.
GND:
Device ground reference.
No Connection:
These pins are only available on the TQFP package.
CC
:
8
Description
Description