Datasheet > MC74

MC74

更新时间： 2022-11-26 15:22:55

品牌	Logo	应用领域
安森美 - ONSEMI		传感器温度传感器
页数	文件大小	规格书
12页	126K
描述
Serial Digital Temperature Sensor

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中文翻译

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数据手册

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MC74 数据手册

MC74

Temperature Register (TEMP), 8–Bits,

READ–ONLY

MC74 Command Set

(SMBus READ_BYTE and WRITE_BYTE)

The binary value (2’s complement format) in this register

represents temperature of the integrated sensor following a

conversion cycle. The registers are automatically updated in

an alternating manner.

Command Byte Description

Command

RTR

Code Function

Temperature Register (TEMP)

00h

01h

Read Temperature (TEMP)

Read/Write Configuration (CONFIG)

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

LSB

RWCR

MSB

Configuration Register (CONFIG), 8–BITS,

READ/WRITE

In the temperature data registers, each unit value

represents one degree (Celsius). The value is in

2’s–complement binary format such that a reading of 0000

0000b corresponds to 0°C. Examples of this temperature to

binary value relationship are shown in the following table.

Configuration Register (Config)

D[7]

D[6]

D[5] D[4] D[3] D[2] D[1] D[0]

SHDN

Data Rdy Reserved

Temperature–to–Digital Value Conversion (TEMP)

Bit

POR Function

Type Operation

ACTUAL

REGISTERED

BINARY HEX

D[7]

STANDBY switch

Read/ 1 = standby,

Write 0 = normal

TEMPERATURE

+130.00°C

+127.00°C

+126.50°C

+25.25°C

+0.50°C

+0.25°C

0.00°C

+127°C

+25°C

+1°C

0°C

0111 1111

0001 1001

0000 0001

0000 0000

1111 1111

1110 0111

1110 0110

1100 1001

1011 1111

D[6]

Data Ready*

Read 1 = ready,

Only

0 = not ready

D[5]—D[0]

Reserved — Al-

ways returns zero

when read.

N/A

*DATA_RDY bit reset at power–up and SHDN enable (see below).

0°C

-0.25°C

0°C

-0.50°C

0°C

-0.75°C

-1°C

-1.00°C

-1°C

DATA_RDY

SHDN

-25.00°C

-25.25°C

-54.75°C

-55.00°C

-65.00°C

-25°C

-55°C

-65°C

conv

Figure 3. . DATA_RDY, SHDN Operation Logic

Diagram

The MC74’s register set is summarized below. All

registers are 8–bits wide.

Name

Description

POR State

Read Write

TEMP

Internal sensor

temperature (2’s

complement)

0000 0000b*

√

CONFIG CONFIG register

0000 0000b

√

*NOTE: The TEMP register immediately will be updated by the

A/D converter after the DATA_RDY bit goes high.

http://onsemi.com

1...4 5 678 9 10...12

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与MC74相关器件

型号	品牌	获取价格	描述	数据表
MC7400	ONSEMI	获取价格	Single Supply Quad Comparators
MC7400	FREESCALE	获取价格	N-Channel 20V (D-S) MOSFET High performance trench technology
MC-7400	MOXA	获取价格	IntelÂ® 6th Gen Coreâ¢ CPU marine computer w
MC74005N	ETC	获取价格	8-function calculator unit co-operating with LED display
MC74007N	ETC	获取价格	8-function calculator unit co-operating with LED display
MC7400L	MOTOROLA	获取价格	NAND Gate, 74 Series, 4-Func, 2-Input, TTL, CDIP14, TO-116, CERAMIC, DIP-14
MC7400P	MOTOROLA	获取价格	74 SERIES, QUAD 2-INPUT NAND GATE, PDIP14, TO-116, PLASTIC, DIP-14
MC7401F	MOTOROLA	获取价格	74 SERIES, QUAD 2-INPUT NAND GATE, CDFP14, CERAMIC, TO-85, 14 PIN
MC7401L	MOTOROLA	获取价格	NAND Gate, TTL, CDIP14
MC7401P	MOTOROLA	获取价格	NAND Gate, 74 Series, 4-Func, 2-Input, TTL, PDIP14, TO-116, PLASTIC, DIP-14

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