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| 型號： | 935270071112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, MO-015, SOT-129-1, DIP-40 |
| 文件頁數(shù)： | 53/56頁 |
| 文件大小： | 705K |
| 代理商： | 935270071112 |
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Philips Semiconductors
SC16C550
Universal Asynchronous Receiver/Transmitter (UART)
with 16-byte FIFO and infrared (IrDA) encoder/decoder
Product data
Rev. 04 — 13 March 2003
6 of 52
9397 750 11206
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
5.2 Pin description
Fig 4.
DIP40.
SC16C550IN40
002aaa091
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
VSS
VCC
RI
DCD
DSR
CTS
MR
OUT1
DTR
RTS
OUT2
INT
RXRDY
A0
A1
A2
AS
TXRDY
DDIS
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 DIP40
A2-A0
28, 27,
26
28, 27,
26
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
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 specied 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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