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W742S81A

Features: • Operating voltage: 2.4V 5.5V• Dual-clock operation or single-clock operation (By option)• Main-oscillator − Connect to 3.58MHz crystal or 400KHz that can be selected by option code − Crystal or RC oscillator can be selected by code option• Sub-oscil...

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SeekIC No. : 004544953 Detail

W742S81A: Features: • Operating voltage: 2.4V 5.5V• Dual-clock operation or single-clock operation (By option)• Main-oscillator − Connect to 3.58MHz crystal or 400KHz that can be sele...

W742S81A Data Sheet

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Part Number:
W742S81A
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Operating voltage: 2.4V 5.5V
• Dual-clock operation or single-clock operation (By option)
• Main-oscillator
   − Connect to 3.58MHz crystal or 400KHz that can be selected by option code
   − Crystal or RC oscillator can be selected by code option
• Sub-oscillator
   − Connect to 32768 Hz crystal only
• Memory
   − 16384 x 16 bits program electrical erasable EPROM (including 64K x 4 bit look-up table)
   − 2048 x 4 bits data RAM (including 16 nibbles x 16 pages working registers)
   − 40 x 4 LCD data RAM
• 24 input/output pins
   − Port for input only: 1 ports/4 pins(RC)
   − Input/output ports: 3 ports/12 pins(RA, RB & RD)
   − High sink current output port for LED driving: 1 port /4 pins(RE)
   − Port for output only: 1 port/ 4 pins(RF)
• Power-down mode
   − Hold function: no operation ( main-oscillator and sub-oscillator still operate)
   − Stop function: no operation ( main-oscillator and sub-oscillator are stopped)
   − Dual-clock slow operation mode: system is operated by the sub-oscillator (FOSC=Fs and Fm is stopped)
• Five types of interrupts
   − Four internal interrupts (Divider0, Divider1, Timer 0, Timer 1)
   − One external interrupts (RC Port)


Pinout

Connection Diagram


Specifications

PARAMETER RATING UNIT
Supply Voltage to Ground Potential -0.3 to +7.0 V
Applied Input/Output Voltage -0.3 to +7.0 V
Power Dissipation 120 mW
Ambient Operating Temperature 0 to +70 °C
Storage Temperature -55 to +150 °C



Description

The W742S81A is a high-performance 4-bit microcontroller (C) that provides an LCD driver. The device contains a 4-bit ALU, two 8-bit timers, two dividers (for two oscillators) in dual-clock operation, a 40 * 4 LCD driver, six 4-bit I/O ports (including 1 output port for LED driving), and one channel DTMF generator. There are also five interrupt sources and 16-levels subroutine nesting for interrupt applications. The W742S81A operates on very low current and has two power reduction modes, that is the dual-clock slow operation and STOP mode, which help to minimize power dissipation.




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