Controller

RTD2120 PDF Datasheet – 8051 Embedded Micro Controller

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Part Number: RTD2120, RTD2120L

Function: 8051 Embedded Micro Controller

Package: PLCC44, LQFP48, QFP44 Type

Manufacturer: Realtek

Images:

RTD2120 datasheet pdf

Description

The RTD2120 chip is the micro-processor of LCD monitor. It uses the Designware DW8051 of Synopsys as the 8051 core of this chip and is compatible with other industry 8051 series. Also, 96Kbyte FLASH with 8 bit bus is embedded in this chip which is licensed from TSMC 0.18um e-FLASH process. […]

Features

1. Operating voltage range : 3.0V to 3.6V

2. 8051 core, CPU operating frequency up to 50MHz

3. 4 clocks per machine cycle

4. 256-byte internal RAM

5. 512-byte external data RAM, including 256-byte DDC RAM(128-byte x 2) and 256-byte
general purpose RAM

6. 96K-byte flash memory, 64k for program and 32k for saving parameter

7. Two DDC ports compliant with VESA DDC1/2B/2Bi/CI

8. Three channels of PWM DAC with programmable frequency from 100K to 100Hz

RTD2120 Datasheet


RTD2120 pdf

AH291 Dataheet PDF – Smart FAN Motor Controller

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Part Number: AH291

Function: LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER

Package: SIP-4L and SOT89-5L Type

Manufacturer: Diodes Incorporated.

Pinouts:

AH291 datasheet

 

Description

AH291 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-collector drivers for motor’s coil driving,automatic lock shutdown and restart function relatively.

Rotor-lock shutdown detection circuit turns off the output driver when the rotor is blocked to avoid coil overheat. Then, the automatic recovery circuit will restart the motor. These protected actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers and runs normally.

Features

1. On Chip Hall Sensor

2. Rotor-Locked Shutdown

3. Automatically Restart

4. Built-in Zener Protection for Output Driver

5. Operating Voltage: 1.8V to 5.75V

6. Output Current: IO(AVE)= 400mA

7. Green Molding Compound

Applications:

1. Two-coil BLDC cooling fans

2. Low to medium voltage, low power BLDC motors

AH291 Datasheet PDF Download


AH291 pdf

Other data sheets are available within the file: AH-291, AH291-YG-13