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W742E81A

Features: · Operating voltage: 2.4V -3.8V· Dual -clock operation or single -clock operation (By option)· Main -oscillator - Connect to 3.58 MHz crystal or 400 KHz that can be selected by option code - Crystal or RC oscillator can be selected by code option (W742E81A) - Connect to 2 MHz typical RC ...

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SeekIC No. : 004544951 Detail

W742E81A: Features: · Operating voltage: 2.4V -3.8V· Dual -clock operation or single -clock operation (By option)· Main -oscillator - Connect to 3.58 MHz crystal or 400 KHz that can be selected by option code...

W742E81A Data Sheet

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Part Number:
W742E81A
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/20

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Product Details

Description



Features:

· Operating voltage: 2.4V   -3.8V
· Dual   -clock operation or single   -clock operation (By option)
· Main   -oscillator
   - Connect to 3.58 MHz crystal or 400 KHz that can be selected by option code
   - Crystal or RC oscillator can be selected by code option (W742E81A)
   - Connect to 2 MHz typical RC oscillator (W742C81A)
· Sub   -oscillator
   - Connect to 32768 Hz crystal only
· Memory
   - 16384 x 16 bits program flash EEPROM (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 W742E81A/W742C81A is a high-performance 4-bit microcontroller (mC) that provides an LCD driver. The device contains a 4-bit ALU, two 8-bit timers, two dividers (for two oscillators) in dualclock 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 W742E81A/W742C81A 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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