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W541C250

Features: • Operating voltage: 2.4 ~ 5.5V (LCD drive voltage: 3.0V, or 4.5V)• Single system clock− Oscillation frequency up to 4 MHz , Crystal or RC oscillator is selected by mask code option ,− High-frequency (400 KHz to 4 MHz) or low-frequency (32.768 KHz) oscillation is ...

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SeekIC No. : 004544824 Detail

W541C250: Features: • Operating voltage: 2.4 ~ 5.5V (LCD drive voltage: 3.0V, or 4.5V)• Single system clock− Oscillation frequency up to 4 MHz , Crystal or RC oscillator is selected by mask ...

W541C250 Data Sheet

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Part Number:
W541C250
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: 2.4 ~ 5.5V (LCD drive voltage: 3.0V, or 4.5V)
• Single system clock
− Oscillation frequency up to 4 MHz , Crystal or RC oscillator is selected by mask code option ,
− High-frequency (400 KHz to 4 MHz) or low-frequency (32.768 KHz) oscillation is delected by mask code option
• Memory
−2048 * 16 bit program ROM (including 2K * 4 bit look-up table)
−128 * 4 bit data RAM (including 16 working registers)
− 24 * 4 LCD data RAM
• 21 input/output pins
−Ports for input only: 2 ports/8 pins
−Input/output ports: 2 ports/8 pins
−Port for output only: 1 port /4 pins (high sink current to drive LEDs)
−MFP output pin: 1 pin (MFP)
• Power-down mode
- Hold function: no operation (except for oscillator)
- Stop function: no operation (including main clock)
• Five types of interrupts
−Three internal interrupts (Divider 0, Timer 0, Timer 1)
−Two external interrupt (Port RC and INT pin)
• LCD driver output
− 24 segment * 4 common
−Static, 1/2 duty (1/2 bias), 1/3 duty (1/2 or 1/3 bias), 1/4 duty (1/3 bias) driving mode can be selected
−LCD driver output pins can be used as DC output ports; selectable by code option
• MFP output pin
−Output is software selectable as modulating or nonmodulating frequency
−Works as frequency output specified by Timer 1
• Built-in 14-bit clock frequency divider circuit
• Two built-in 8-bit programmable countdown timers
−Timer 0: one of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected
−Timer 1: includes an auto-reload function; and one of two internal clock frequencies (FOSC or FOSC/64) can be selected or falling edge of pin RC.0 can be selected (output through MFP pin)
• Built-in 18/14-bit watchdog timer selectable for system reset
• Powerful instruction set: 115 instructions
• 8-level subroutine (include interrupt) nesting
• Up to 1 S instruction cycle (with 4 MHz operating frequency)
• Packaged in 64-pin QFP


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
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.


Description

The W541C250 is fully compatible with W741C250 in terms of pin assignment and IC function.. It is a high-performance 4-bit microcontroller (C) that provides an LCD driver. The device contains a 4-bit ALU, two 8-bit timers, a divider, a 24 * 4 LCD driver, and five 4-bit I/O ports (including 1 output port for LED driving). There are also five interrupt sources and 8-level subroutine nesting for interrupt applications. The W541C250 operates on low voltage and very low current and has two power reduction modes, hold mode and stop mode, which help to minimize power dissipation.

The W541C250 is suitable for remote controllers, watches and clocks, multiple I/O products, keyboard controllers, speech synthesis LSI controllers, and other products.




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