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參數(shù)資料
| 型號(hào)： | SC16C2552BIA44,518 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 34/37頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART DUAL SOT187-2 |
| 標(biāo)準(zhǔn)包裝： | 500 |
| 特點(diǎn)： | 2 通道 |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 16 字節(jié) |
| 電源電壓： | 2.5V，3.3V，5V |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動(dòng)位檢測功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 44-PLCC |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | 935274408518 SC16C2552BIA44-T SC16C2552BIA44-T-ND |
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SC16C2552B_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 12 February 2009
6 of 38
NXP Semiconductors
SC16C2552B
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
6.
Functional description
The SC16C2552B provides serial asynchronous receive data synchronization,
parallel-to-serial and serial-to-parallel data conversions for both the transmitter and
receiver sections. These functions are necessary for converting the serial data stream into
parallel data that is required with digital data systems. Synchronization for the serial data
stream is accomplished by adding start and stop bits to the transmit data to form a data
character. Data integrity is ensured by attaching a parity bit to the data character. The
parity bit is checked by the receiver for any transmission bit errors. The SC16C2552B is
fabricated with an advanced CMOS process.
The SC16C2552B is an upward solution that provides a dual UART capability with
16 bytes of transmit and receive FIFO memory, instead of none in the 16C450. The
SC16C2552B is designed to work with high speed modems and shared network
environments that require fast data processing time. Increased performance is realized in
the SC16C2552B by the transmit and receive FIFOs. This allows the external processor to
handle more networking tasks within a given time. In addition, the four selectable receive
FIFO trigger interrupt levels are uniquely provided for maximum data throughput
performance, especially when operating in a multi-channel environment. The FIFO
memory greatly reduces the bandwidth requirement of the external controlling CPU,
increases performance, and reduces power consumption.
The SC16C2552B is capable of operation up to 1.5 Mbit/s with a 24 MHz crystal. With a
crystal or external clock input of 7.3728 MHz, the user can select data rates up to
460.8 kbit/s.
The rich feature set of the SC16C2552B is available through internal registers. Selectable
receive FIFO trigger levels, selectable TX and RX baud rates, and modem interface
controls are all standard features.
6.1 UART A-B functions
The UART provides the user with the capability to bidirectionally transfer information
between an external CPU, the SC16C2552B package, and an external serial device. A
logic 0 on chip select pin CS and a logic 1 on CHSEL allows the user to congure, send
data, and/or receive data via UART channel A. A logic 0 on chip select pin CS and a
logic 0 on CHSEL allows the user to congure, send data, and/or receive data via UART
channel B. Individual channel select functions are shown in Table 3.
During a write mode cycle, the setting of AFR[0] to a logic 1 will override the CHSEL
selection and allow a simultaneous write to both UART channel sections. This functional
capability allows the registers in both UART channels to be modied concurrently, saving
individual channel initialization time. Caution should be considered, however, when using
this capability. Any in-process serial data transfer may be disrupted by changing an active
channel’s mode.
Table 3.
Serial port selection
Chip select
UART select
CS = 1
none
CS = 0
UART channel selected as follows:
CHSEL = 1: UART channel A
CHSEL = 0: UART channel B
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|---|---|
| SC16C2552BIA44-T | 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH 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 |
| SC16C2552CIA44,512 | 制造商:NXP Semiconductors 功能描述: 制造商:NXP Semiconductors 功能描述:SC16C2552CIA44/PLCC44/TUBEDP// - Rail/Tube |
| SC16C2552CIA44,518 | 制造商:NXP Semiconductors 功能描述:SC16C2552CIA44/PLCC44/REEL13DP// - Tape and Reel |
| SC16C2552CIA44,529 | 制造商:NXP Semiconductors 功能描述:SC16C2552CIA44/PLCC44/TUBESMDP// - Rail/Tube |
| SC16C2552IA44 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual UART with 16-byte transmit and receive FIFOs |
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