Datasheet > MAR28151CB

MAR28151CB

更新时间： 2024-09-24 14:43:23

品牌	Logo	应用领域
DYNEX		通信时钟数据传输外围集成电路
页数	文件大小	规格书
22页	185K
描述
Serial I/O Controller, 1 Channel(s), 0.0078125MBps, CMOS, CDIP28

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技术参数
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MAR28151CB 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP28,.6	Reach Compliance Code：	unknown
HTS代码：	8542.31.00.01	风险等级：	5.92
其他特性：	MODEM CONTROL I/OS USABLE AS GENERAL PURPOSE I/OS; DOUBLE BUFFERED DATA PATHS	边界扫描：	NO
总线兼容性：	MAS281	最大时钟频率：	20 MHz
通信协议：	ASYNC, BIT; SYNC, BYTE; BISYNC; EXT SYNC	数据编码/解码方法：	NRZ
最大数据传输速率：	0.0078125 MBps	外部数据总线宽度：	8
JESD-30 代码：	R-CDIP-T28	JESD-609代码：	e0
低功率模式：	NO	DMA 通道数量：
I/O 线路数量：		串行 I/O 数：	1
端子数量：	28	片上数据RAM宽度：
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	CERAMIC, METAL-SEALED COFIRED	封装代码：	DIP
封装等效代码：	DIP28,.6	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	5 V	认证状态：	Not Qualified
RAM（字数）：	0	筛选级别：	38535Q/M;38534H;883B
子类别：	Serial IO/Communication Controllers	最大供电电压：	5.5 V
最小供电电压：	4.5 V	标称供电电压：	5 V
表面贴装：	NO	技术：	CMOS
温度等级：	MILITARY	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
uPs/uCs/外围集成电路类型：	SERIAL IO/COMMUNICATION CONTROLLER, SERIAL	Base Number Matches：	1

MAR28151CB 数据手册

MA^M2^A8²1⁸¹5⁵1¹

Radiation hard Programmable

Communication Interface

Replaces Jone 1999 version, DS3574-4.0

DS3574-5.0 January 2000

The MA28151 is based on the industry standard 8251A

Universal Synchronous Asynchronous Receiver/Transmitter

(USART), modified for data communications with the MAS281

microprocessor.

The MA28151 is used as a peripheral device and is

programmed by the CPU to operate using virtually any serial

data transmission technique presently in use (including IBM

“bi-sync”). The USART accepts data characters from the CPU

in parallel format and then converts them into a continuous

serial data stream for transmission.

Simultaneously, it can receive serial data streams and

convert them into parallel data characters for the CPU. The

USART signals the CPU whenever it receives a character for

transmission or whenever it receives a character for the CPU.

The CPU can read the complete status of the USART at any

time, including data transmission errors and control signals

such as SYNDET and TxEMPTY.

FEATURES

■ Radiation Hard to 1MRad(Si)

■ Latch Up Free, High SEU Immunity

■ Silicon-on-Sapphire Technology

■ Synchronous 5 - 8 Bit Characters; Internal or External

Figure 1: MA28151 Block Diagram

Character Synchronisation; Automatic Sync Insertion

■ Asynchronous 5 - 8 Bit Characters; Clock Rate - 1, 16 or

64 Times Baud Rate; Break Character Generation, 1 ¹⁄

2 Stop Bits

■ All Inputs and Outputs are TTL Compatible

■ Compatible with the MAS281 (MIL-STD-1750A)

Microprocessor

The MA28151 is based on the industry standard 8251A

USART, modified for use with the MAS281 processor,

incorporating the following features:

prevents the transmitter from turning off in the middle of a

word.

6. When external Sync Detect is programmed, Internal Sync

Detect is disabled and an External Sync Detect status is

provided via a flip-flop, which clears itself upon a status read.

7. The possibility of a false sync detect is minimized in two

ways: by ensuring that if double character sync is

programmed, the characters will be continuously detected and

by clearing the Rx register to all 1’s whenever Enter-Hunt

command is issued in Sync mode.

8. When the MA28151 is not selected, the RDWN and DSN

lines do not affect the internal operation of the device.

9. The MA28151 Status can be read at any time but the status

update will be inhibited during status read.

1. MA28151 has double-buffered data paths with separate l/O

registers for control status, data in and data out, which

considerably simplifies control programming and minimizes

CPU overhead.

2. In synchronous operations, the Receiver detects and

handles “break” automatically, relieving the CPU of this task.

3. A refined Rx initialisation prevents the Receiver from

starting when in the “break” state, preventing unwanted

interrupts from the disconnected USART.

4. At the conclusion of a transmission, the TxD line will always

return to the marking state unless SBRK is programmed.

5. Tx Enable logic enhancement prevents a Tx Disable

command from prematurely halting transmission of the

previously written data before completion. The logic also

10. The MA28151 is free from extraneous glitches, providing

higher speed and better operating margins.

11. Synchronous Baud rate is from DC to 64K.

12. Asynchronous Baud rate is from DC to 19.2K.

1/22

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与MAR28151CB相关器件

型号	品牌	获取价格	描述	数据表
MAR28151CBXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151CCXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151CEXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151CXXXX	DYNEX	获取价格	Serial I/O Controller, 1 Channel(s), 0.0078125MBps, CMOS, CDIP28, CERAMIC, DIP-28
MAR28151FB	DYNEX	获取价格	Serial I/O Controller, 1 Channel(s), 0.0078125MBps, CMOS, CQFP68
MAR28151FBXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151FCXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151FDXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151FEXXX	MICROSEMI	获取价格	Telecom IC,
MAR28151FLXXX	MICROSEMI	获取价格	Telecom IC,

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