PC16550DN National Semiconductor, PC16550DN Datasheet - Page 13

• Manufacturer Part Number: PC16550DN
• Description: UART IC
• Manufacturer: National Semiconductor

Specifications of PC16550DN

• Transceiver Type: RS232
• Mounting Type: Through Hole
• Peak Reflow Compatible (260 C): No
• Ic Function: UART IC
• Supply Voltage: 5V
• No. Of Transceivers: 1
• Data Rate Max: 128Kbps
• Leaded Process Compatible: No
• Supply Current: 15mA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

7 0 Connection Diagrams
Note 1 Boldface bits are permanently low
Note 2 Bits 7–4 are driven by the input signals
Interrupt Enable Register
Interrupt Identification Register
FIFO Control
Line Control Register
MODEM Control Register
Line Status Register
MODEM Status Register
SOUT
INTR (RCVR Errs)
INTR (RCVR Data Ready)
INTR (THRE)
INTR (Modem Status Changes)
OUT 2
RTS
DTR
OUT 1
RCVR FIFO
XMIT FIFO
See NS Package Number VEF44A
Register Signal
Order Number PC16550DVEF
TQFP Package
TABLE I UART Reset Configuration
(Continued)
TL C 8652– 26
MR FCR1 FCR0
MR FCR1 FCR0
Read IIR Write THR MR
Read RBR MR
Read MSR MR
Reset Control
Read LSR MR
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
Master Reset
13
FCR0
FCR0
See NS Package Number V44A
Order Number PC16550DV
Chip Carrier Package
Top View
All Bits Low
All Bits Low
0000 0000 (Note 1)
0000 0001
0000 0000
0000 0000
0000 0000
0110 0000
XXXX 0000 (Note 2)
High
Low
Low
Low
Low
High
High
High
High
Reset State
TL C 8652 – 18