The STK672-080-E is a stepping motor driver hybrid IC that uses power MOSFETs in the output stage. It includes a builtin microstepping controller and is based on a unipolar constant-current PWM system. The STK672-080-E supports application simplification and standardization by providing a built-in 4 phase distribution stepping motor controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase excitations, and can provide control of the basic stepping angle of the stepping motor divided into 1/16 step units. It also allows the motor speed to be controlled with only a clock signal.
The use of this hybrid IC allows designers to implement systems that provide high motor torques, low vibration levels, low noise, fast response, and high-efficiency drive.
This product is provided in a smaller package than SANYO's earlier STK672-050-E for easier mounting in end products.

*Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator.

*Facsimile stepping motor drive (send and receive)
*Paper feed and optical system stepping motor drive in copiers
*Laser printer drum drive
*Printer carriage stepping motor drive
*X-Y plotter pen drive
*Other stepping motor applications


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The STK673-010-E is a 3-phase stepping motor driver hybrid IC with built-in microstep controller having a bipolar constant current PWM system, in which a power MOSFET is employed at an output stage.
It includes a 3-phase distributed controller for a 3-phase stepping motor to realize a simple configuration of the motor driver circuit.
The number of motor revolution can be controlled by the frequency of external clock input. 2, 2-3, W2-3 and 2W2-3-phase excitation modes are available. The basic step angle of the stepping motor can be separated as much as one-eighth 2-3-phase to 2W2-3-phase excitation mode control quasi-sine wave current, thereby realizing low vibration and low noise.

*Number of motor revolution can be controlled by the frequency of external clock input.
*4 types of modes, i.e., 2, 2-3, W2-3 and 2W2-3-phase excitations, are available which can be selected based on rising of clock signals, by switching Highs and Lows of Mode A and Mode B terminals.
*Setting a Mode C terminal Low allows an excitation mode that is based on rising and falling of a clock signal.
By setting the Mode C terminal Low, phases that are set only by Mode A and Mode B can be changed to other phases as follows without changing the number of motor revolution: 2-phase may be switched to 2-3-phase; 2-3-phase may be switched to W2-3-phase; and W2-3-phase may be switched to 2W2-3-phase.
*Phase is maintained even when the excitation mode is changed.
*An MOI output terminal which outputs 1 pulse per 1 cycle of phase current.
*A CW/CCW terminal which switches the rotational direction.
*A Hold terminal which temporarily holds the motor in a state where the phase current is conducted.
*An Enable terminal which can forcibly turns OFF a MOSFET of a 6 output driving element in normal operation.
*Schmitt inputs with built-in pull-up resistor (20kΩ typ)
*Motor current can be set by changing the voltage of the Vref terminal (0.63V per 1A, dealing as much as 0 to 1/2VCC2 (4A)).
*The clock input for controlling the number of motor revolution lies in a range of 0 to 50kHz.
*Supply voltage: VCC1 = 16 to 30V, VCC2 = 5.0V ±5%
*A built-in current detection resistor (0.227Ω)
*A motor current during revolution can deal with as high as 2.4A at Tc = 105°C and as high as 4A at Tc = 50°C or lower.

*As a 3-phase stepping motor driver for transmission and reception in a facsimile.
*As a 3-phase stepping motor driver for feeding paper feed or for an optical system in a copying machine.
*Industrial machines or products employing 3-phase stepping motor driving.


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The LA4814V buili-in the power amplifier circuit capable of low-voltage (2.7V and up) operation and has additionally a standby function to reduce the current drain. It is a power amplifier IC optimal for speaker drive used in battery-driven portable equipment and other such products.

*On-chip 2-channel power amplifier
- Output power 1 = 350mW typ. (VCC = 5.0V, RL = 4Ω, THD = 10%)
- Output power 2 = 150mW typ. (VCC = 3.6V, RL = 4Ω, THD = 10%)
*Enables monaural BTL output system by changing externally connected components
- Output power 3 = 700mW typ. (VCC = 5.0V, RL = 8Ω, THD = 10%)
- Output power 4 = 320mW typ. (VCC = 3.6V, RL = 8Ω, THD = 10%)
*Low-voltage operation possible
- VCC =2.7V and up
*Standby function
- Current drain at standby = 0.1μA typ. (VCC = 5V)
*Voltage gain setting possible
- Voltage gain = 3 to 20dB
*Second amplifier stop control function
- Reducing the pop noise at startup (in BTL mode)

Mini radio cassette players/recorders, portable radios, transceivers and other portable audio devices


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Product Description
 The LE28F1101T is a 64K ×16 CMOS sector erase, word program EEPROM.
The LE28F1101T is manufactured using SANYO's proprietary, high performance CMOS Flash
EEPROM technology.
Breakthroughs in EEPROM cell design and process architecture attain better reliability and
manufacturability compared with conventional approaches.
The LE28F1101T erases and programs with a 5-volt only power supply.
LE28F1101T is offered in TSOP40 (10×14mm) packages.
Featuring high performance programming, LE28F1101 typically word programs in 30μs.
The LE28F1101 typically sector (128word) erases in 2ms.
Both program and erase times can be optimized using interface feature such as Toggle
bit or DATA Polling to indicate the completion of the write cycle.
To protect against an inadvertent write, the LE28F1101T has on chip hardware and software data protection schemes.
Designed, manufactured, and tested for a wide spectrum of applications, the LE28F1101T is offered with a guaranteed sector write endurance of 104 cycles.
Data retention is rated greater than 10 years.
The LE28F1101T is best suited for applications that require reprogrammable nonvolatile mass storage of program or data memory.
For all system applications, the LE28F1101T significantly improves performance and reliability,
while lowering power consumption when compared with floppy diskettes or EPROM approaches.
EEPROM technology makes possible convenient and economical updating of codes and control programs on-line.
The LE28F1101T improves flexibility, while lowering the cost, of program and configuration storage applications.
Figure 1 shows the pin assignments for the 40 lead Plastic TSOP packages.
Figure 2 shows the functional block diagram of the LE28F1101T.
Pin description and operation modes can be found in Tables 1 through 3.

Device Operation
Commands are used to initiate the memory operation functions of the device.
Commands are written to the device using standard microprocessor write sequences.
A command is written by asserting WE low while keeping CE low.
The address bus is latched on the falling edge of WE, CE , whichever occurs last.
The data bus is latched on the rising edge of WE, CE , whichever occurs first. However, during
the software write protection sequence the addresses are latched on the rising edge of OE or CE , whichever occurs first.

* CMOS Flash EEPROM Technology
* Single 5-Volt Read and Write Operations
* Sector Erase Capability: 128word per sector
* Fast Access Time: 40ns/45ns/55ns/70ns
* Low Power Consumption
- Active Current (Read): 50 mA (Max.)
- Standby Current: 100 μA (Max.)
* High Read/Write Reliability
- Sector-write Endurance Cycles: 104
- 10 Years Data Retention
* Latched Address and Data
* Self-timed Erase and Programming
* Word Programming: 40μs (Max.)
* End of Write Detection: Toggle Bit/ DATA Polling
* Hardware/Software Data Protection
* Packages Available
- LE28F1101T : 40-pin TSOP Normal(10×14mm)


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The LV4124W is a LCD panel driver for use in lowtemperature polysilicon TFT LCDs that integrates an RGB decoder, a driver, and a timing controller in a single chip.
This IC is manufactured in Bi-CMOS process and supports the ALP202 2.0-inch color LCD panel.

• Analog block: RGB decoder/driver
• Digital block: Timing generator

• Supports NTSC/PAL standard
• Supports composite, Y/C, and Y/color difference inputs
• Built-in BPF, TRAP, and DL circuits
• Sharpness function
• Dual point g correction circuit
• Pre-charge circuit
• R and B outputs delay time correction circuit (Supports up and down and right and left inversions)
• Polarity reverse circuit
• External RGB input supported
• Line inversion supported
• Supports AC drive for the LCD panel during no signal
• Serial bus for mode setting and electric VR

• SQFP-64 plastic package
TAG Chip, Driver, ic, LCD

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The LA7605M is a flat panel display color TV signal-processing I2C bus controller IC that supports all the broadcast standards used worldwide.

• VIF/SIF bloc
Adjustment-free VCO, 4-mode audio trap/audio bandpass filter, buzz canceller RF AGC/video level
• Single crystal color system : PAL and NTSC
• Black stretch, sharpness control with coring on/off control, built-in variable Y system filters
(Y-DL and chrominance trap)
• Chrominance bandpass filter, demodulation ratio/angle control, support for CbCr input
• VS, HS, and BGP outputs, C-sync output, FSC output
• Dynamic contrast control
• VIF, SIF, video, and sync separator circuits with superlative weak field and nonstandard signal characteristics
• Adjustment-free VIF/SIF, audio trap, and audio bandpass filters
• Horizontal resonator-less adjustment-free system
• Supply voltage : VCC = 5V

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• High gain of 51dB typ. and high power output of 12W typ.
• Possible to delete output and bootstrap capacitors, this encourages cost and space reductions due to external parts reduction.
• Reduced external components (8 pieces recommended, 6 pieces minimum).
• Almost no pop noises heard during power on or off operation.
• Soft tonal quality in saturated power output.
• Low distortion over low to high ranges of the audio frequencies.
• Low residual noises (Rg=0).
• Good operation conditions because of SIP (single ended pins) package having been employed for the LA4460N.
• All pin terminal layouts of the LA4461N are reversed for easy stereo PC board pattern arrengement.
• Two ground terminals for pre-amplifier and power amplifier are provided for easy PC board pattern arrangement
and for stabilizing distortion chracteristics depending on signal source impedance.
• Voltage gain is fixed at 51dB, however, lowering the gain is possible by adding a resistor.
• IC is not damaged, if it is connected reversely.
• Audio muting functions (AC mute & DC mute) are equipped.
• Several protection circuits are installed, including :
a. Thermal protection circuit.
b. Overvoltage & surge voltage protection circuit.
c. Load short-circuit current limiting protection circuit.
d. Output pins DC short-circuit protection circuit.
(grounding protection between OUT & GND, and speaker protection provided.)

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