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| 型號： | SC16C550BIA44 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 收發(fā)器 |
| 英文描述： | 5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs |
| 封裝： | SC16C550BIA44<SOT187-2 (PLCC44)|<<http://www.nxp.com/packages/SOT187-2.html<1<week 51, 2004,;SC16C550BIA44<SOT187-2 (PLCC44)|<<http://www.nxp.com/packages/SOT187-2.html&l |
| 文件頁數(shù)： | 6/48頁 |
| 文件大小： | 240K |
| 代理商： | SC16C550BIA44 |
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SC16C550B_5
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 1 October 2008
6 of 48
NXP Semiconductors
SC16C550B
5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs
5.2 Pin description
Table 2.
Symbol
Pin description
Pin
PLCC44 LQFP48 DIP40 HVQFN32
31
28
30
27
29
26
Type
Description
A0
A1
A2
28
27
26
19
18
17
I
Register select.
A2 to A0 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.
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.
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. In HVQFN32 package
BAUDOUT and RCLK are bonded internally.
Chip select.
When CS0 and CS1 are HIGH and CS2 is
LOW, these three inputs select the UART. When any of
these inputs are inactive, the UART remains inactive (refer
to AS description).
AS
28
24
25
-
I
BAUDOUT
17
12
15
-
O
CS0
[2]
CS1
[2]
CS2
[2]
CS
[2]
CTS
[2]
14
15
16
-
40
9
10
11
-
38
12
13
14
-
36
-
-
-
8
24
I
I
Clear to send.
CTS is a modem status signal. Its condition
can be checked by reading bit 4 (CTS) of the Modem
Status Register. Bit 0 (CTS) of the Modem Status Register
indicates that CTS has changed states since the last read
from the Modem Status Register. If the modem status
interrupt is enabled when CTS changes levels and the
auto-CTS mode is not enabled, an interrupt is generated.
This pin has no effect on the UART’s transmit or receive
operation.
Data bus.
Eight data lines with 3-state outputs provide a
bidirectional path for data, control and status information
between the UART and the CPU.
D7 to D0
9, 8, 7,
6, 5, 4,
3, 2
4, 3, 2,
47, 46,
45, 44,
43
40
8, 7,
6, 5,
4, 3,
2, 1
38
5, 4, 3, 1,
32, 31,
30, 29
I/O
DCD
[2]
42
26
I
Data carrier detect.
DCD is a modem status signal. Its
condition can be checked by reading bit 7 (DCD) of the
Modem Status Register. Bit 3 (DCD) of the Modem Status
Register indicates that DCD has changed states since the
last read from the Modem Status Register. If the modem
status interrupt is enabled when DCD changes levels, an
interrupt is generated.
Driver disable.
DDIS is active (LOW) when the CPU is
reading data. When inactive (HIGH), DDIS can disable an
external transceiver.
DDIS
26
22
23
-
O
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| SC16C550BIA44,512 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 1CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C550BIA44,518 | 功能描述:UART 接口集成電路 1CH. UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C550BIA44,529 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 1CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C550BIA44512 | 制造商:NXP Semiconductors 功能描述:IC SINGLE UART FIFO 3MBPS 5.5V LCC44 |
| SC16C550BIA44-S | 功能描述:UART 接口集成電路 16CB 2.5V-5V 1CH UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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