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SC16C650B Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. SC16C650B
Description  5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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SC16C650B Datasheet(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
SC16C650B
UART with 32-byte FIFOs and IrDA encoder/decoder
Product data
Rev. 03 — 10 December 2004
6 of 51
9397 750 14451
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
5.2 Pin description
Fig 5.
DIP40 pin configuration.
002aaa605
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D0
D1
D2
D3
D4
D5
D6
D7
RCLK
RX
TX
CS0
CS1
BAUDOUT
XTAL1
XTAL2
IOW
IOW
GND
VCC
RI
DCD
DSR
CTS
RESET
OUT1
DTR
RTS
OUT2
INT
RXRDY
A0
A1
A2
AS
TXRDY
DDIS
IOR
IOR
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
CS2
Table 2:
Pin description
Symbol
Pin
Type
Description
PLCC44 LQFP48 HVQFN32 DIP40
A0-A2
31, 30,
29
28, 27,
26
18, 17, 16 28,
27, 26
I
Register select. A0-A2 are used during read and write
operations to select the UART register to read from or write
to. Refer to Table 3 for register addresses and refer to AS
description.
AS
28
24
-
25
I
Address strobe. When AS is active (LOW), A0, A1, and A2
and CS0, CS1, and CS2 drive the internal select logic
directly; when AS is HIGH, the register select and chip select
signals are held at the logic levels they were in when the
LOW-to-HIGH transition of AS occurred.
BAUDOUT
17
12
8
15
O
Baud out. BAUDOUT is a 16
× clock signal for the
transmitter section of the UART. The clock rate is established
by the reference oscillator frequency divided by a divisor
specified in the baud generator divisor latches. BAUDOUT
may also be used for the receiver section by tying this output
to RCLK.


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