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W742C818

Features: · Operating voltage- 2.4V - 6.0V for mask type· Dual-clock operation· Main oscillator- 3.58MHz or 400khz can be selected by code option- Crystal or RC oscillator can be selected by code option· Sub-oscillator- Connect to 32.768KHz crystal only· Memory- 16384(16K) x 16 bit program ROM (in...

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SeekIC No. : 004544945 Detail

W742C818: Features: · Operating voltage- 2.4V - 6.0V for mask type· Dual-clock operation· Main oscillator- 3.58MHz or 400khz can be selected by code option- Crystal or RC oscillator can be selected by code op...

W742C818 Data Sheet

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Part Number:
W742C818
Supply Ability:
5000

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

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Upload time: 2024/4/18

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Product Details

Description



Features:

· Operating voltage
- 2.4V - 6.0V for mask type
· Dual-clock operation
· Main oscillator
- 3.58MHz or 400khz can be selected by code option
- Crystal or RC oscillator can be selected by code option
· Sub-oscillator
- Connect to 32.768KHz crystal only
· Memory
- 16384(16K) x 16 bit program ROM (including 64K x 4 bit look-up table)
- 4096(4K) x 4 bit data RAM (including 16 nibbles x 16 pages working registers)
- 28 x 8 LCD data RAM
· 32 input/output pins
- Port for input only: 3 ports/12 pins
- Input/output ports: 3 ports/12 pins
- High sink current output port for LED driving: 2 port /8 pins
· Power-down mode
- Hold mode: no operation (main oscillator and sub-oscillator still operate)
- Stop mode: no operation (main oscillator and sub-oscillator are stopped)
- Slow mode: main oscillator is stopped, system is operated by the sub-oscillator
(32.768KHz)
· Eleven interrupt sources
- Four internal interrupts (Divider0, Divider1, Timer 0, Timer 1)
- Seven external interrupts (RC.0-3, P1.2(/INT0), Serial Port, P1.3(/INT1))
 
· LCD driver output
- 28 segments x 8 commons
- 1/8 duty, 1/3 or 1/4 bias driving mode by option code
- Clock source should be the sub-oscillator clock in the dual-clock operation mode
- 16 level software LCD contrast adjusting
- LCD operating voltage by internal pump
- LCD wave form type A or type B by option code
· MFP output pin
- Output is software controlled to generate modulating or non-modulating frequency
- Works as frequency output specified by Timer 1
- Key tone generator
· DTMF output pin
- Output is one channel Dual Tone Multi-Frequency signal for dialing
· 8-bit Serial I/O Interface
- 8-bit transmit/receive mode by internal or external clock source
· Two built-in 14-bit frequency dividers
- Divider0: the clock source is the main oscillator (Fosc)
- Divider1: the clock source is the sub-oscillator (Fs)
· 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: with auto-reload function and one of three internal clock frequencies (FOSC or
FOSC/64 or Fs) can be selected (signal output through MFP pin)
· Built-in 18/115-bit watchdog timer selectable for system reset, enable/disable by code option
· Powerful instruction set: 1XX instructions
· 16-level stack buffer
· Package type : 100-pin QFP


Pinout

Connection Diagram


Specifications

Parameter

RATING
Unit
Supply Voltage to Ground Potential
Applied Input/Output Voltage
Power Dissipation
Ambient Operating Temperature
Storage Temperature
-0.3 to +7.0
-0.3 to +7.0
120
0 to +70
-55 to +150
V
V
mW
°C
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.


Description

The W742C818 (SA5696) is a high-performance 4-bit micro-controller (mC) that built in 224-dot LCD driver. The device contains a 4-bit ALU, two 8-bit timers, two dividers in dual-clock operation, a 28 ×8 LCD driver, ten 4-bit I/O ports (including 2 output port for LED driving), multiple frequency output (MFP), and one channel DTMF generator. There are also eleven interrupt sources and 16-level stack buffer. The W742C818 operates on very low current and has three power reduction modes, hold mode, stop mode and slow mode, which help to minimize power dissipation.




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