W742C810 データシートの表示（PDF） - Winbond
部品番号
コンポーネント説明
メーカー
W742C810 Datasheet PDF : 42 Pages
| |||
Preliminary W742C810
1. GENERAL DESCRIPTION
The W742C810 is a high-performance 4-bit microcontroller (µC) 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 8-level subroutine nesting for interrupt
applications. The W742C810 operates on very low current and has one power reduction mode, that is
the dual-clock slow operation, which helps to minimize power dissipation.
2. FEATURES
• Operating voltage: 2.4V−3.6V
• Dual-clock operation
• Main oscillator
− Connect to 3.58 MHz crystal only
• Sub-oscillator
− Connect to 32768 Hz crystal only
• Memory
− 8192 x 16 bit program ROM (including 32K x 4 bit look-up table)
− 1024 x 4 bit 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
− Input/output ports: 3 ports/12 pins
− High sink current output port for LED driving: 1 port /4 pins
− Port for output only: 1 port/ 4 pins
• Power-down mode
− Hold function: no operation (main oscillator and sub-oscillator still operate)
− Stop function: no operation (only main oscillator stops but sub-oscillator still operates)
− Dual-clock slow 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 interrupt (RC Port)
• LCD driver output
− 40 segments x 4 commons
− 1/4 duty 1/3 bias driving mode
− Clock source should be the sub-oscillator clock in the dual-clock operation mode
• MFP output pin
− Output is software selectable as modulating or nonmodulating frequency
− Works as frequency output specified by Timer 1
Publication Release Date: May 1999
-3-
Revision A1
Share Link: 