IA16450
Page 1 of 10
Preliminary Data Sheet
Universal Asynchronous Receiver/Transmitter
FEATURES
• Form, Fit, and Function Compatible with the National© NS16450
• Packaging options available: 40 Pin Plastic or 44 Pin Plastic Leaded Chip
Carrier
• Programmable Word Length, Stop Bits, and Parity
• Full Duplex Operation
• Programmable Baud Rate Generator
- Division of any input clock by 1 to (216 –1)
- Generates Internal 16 x clock
• Programmable Serial-Interface
- 5-, 6-, 7- or 8-bit characters
- Even, Odd, or No-Parity Bit Generation and Detection
- 1-, 1 ½-, or 2-Stop Bit Generation
- Baud Generation of DC to 56k
• Prioritized Interrupt Control
• Internal Diagnostic/Loopback Capabilities
The IA16450 uses innovASIC’s innovative new f 3 Program to provide industry with parts that
other vendors have declared obsolete. By specifying parts through this program a customer is
assured of never having a component become obsolete again. This advanced information sheet
assumes the original part has been designed in, and so provides a summary of capabilities only. For
new designs contact innovASIC for more detailed information.
National is a copyright trademark of National Semiconductor Corporation
Package Pinout
D0
D1
D2
D3
D4
D5
D6
D7
RCLK
SIN
SOUT
CS0
CS1
CS2_n
BAUDOUT_n
XIN
XOUT
WR_n
WR
VSS
(1) IA16450
(2) 40 Pin DIP
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(40)
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
(24)
(23)
(22)
(21)
VCC
RI_n
DCD_n
DSR_n
CTS_n
MR
OUT1_n
DTR_n
RTS_n
OUT2_n
INTR
N. C.
A0
A1
A2
ADS_n
CSOUT
DDIS
RD
RD_n
D5
D6
D7
RCLK
SIN
N. C.
SOUT
CS0
CS1
CS2_n
BAUDOUT_n
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
IA16450
44 Pin LCC
(39) MR
(38) OUT1_n
(37) DTR_n
(36) RTS_n
(35) OUT2_n
(34) N. C.
(33) INTR
(32) N. C.
(31) A0
(30) A1
(29) A2
Copyright © 1999, InnovASIC Inc.
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