W742E813F, W742E81A, W742E81AF Selling Leads, Datasheet
MFG:NUVOTON Package Cooled:2005+ D/C:08+
W742E813F, W742E81A, W742E81AF Datasheet download
Part Number: W742E813F
MFG: NUVOTON
Package Cooled: 2005+
D/C: 08+
W742E813F, W742E81A, W742E81AF
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Info of W742E813F
Info of W742E81A
Info of W742E81AF
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About w74110
PDF/DataSheet Download
Datasheet: w74110
File Size: 36404 KB
Manufacturer: Winbond
Download : Click here to Download
About W742E81A
PDF/DataSheet Download
Datasheet: W742E81A
File Size: 581477 KB
Manufacturer: WINBOND [Winbond]
Download : Click here to Download
About w74110
PDF/DataSheet Download
Datasheet: w74110
File Size: 36404 KB
Manufacturer: Winbond
Download : Click here to Download
W742E81A General 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.
W742E81A Maximum Ratings
| 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 |
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 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
· 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
W742E81A Connection Diagram
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