W78IE54 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

W78IE54

8-BIT MTP MICROCONTROLLER

Winbond 

Preliminary W78IE54

8-BIT MTP MICROCONTROLLER

GENERAL DESCRIPTION

The W78IE54 is an 8-bit microcontroller which can accommodate a wide supply voltage range with

low power consumption. The W78IE54 can operate normally within the temperature of industrial

standard range from –40 to 85°C. The instruction set for the W78IE54 is fully compatible with the

standard 8051. The W78IE54 contains an 16K bytes MTP ROM (Multiple-Time Programmable ROM);

a 256 bytes RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit I/O port

P4; three 16-bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are

supported by eight sources two-level interrupt capability. To facilitate programming and verification,

the MTP-ROM inside the W78IE54 allows the program memory to be programmed and read

electronically. Once the code is confirmed, the user can protect the code for security.

The W78IE54 microcontroller has two power reduction modes, idle mode and power-down mode,

both of which are software selectable. The idle mode turns off the processor clock but allows for

continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power

consumption. The external clock can be stopped at any time and in any state without affecting the

processor.

FEATURES

• Fully static design 8-bit CMOS microcontroller

• Wide supply voltage of 2.4V to 5.5V

• Wide operating temperature range from -40 °C to 85 °

• DC-40 MHz operation

• 256 bytes of on-chip scratchpad RAM

• 16 KB electrically erasable/programmable MTP-ROM

• 64 KB program memory address space

• 64 KB data memory address space

• Four 8-bit bi-directional ports

• One extra 4-bit bit-addressable I/O port, additional INT2 / INT3

(available on 44-pin PLCC package)

• Three 16-bit timer/counters

• One full duplex serial port(UART)

• Watchdog Timer

• Eight sources, two-level interrupt capability

• EMI reduction mode

• Built-in power management

• Code protection mechanism

• Packages:

− DIP 40: W78IE54

− PLCC 44: W78IE54P

Publication Release Date: August 1999

-1-

Revision A1

Share Link: