W78E054DDG Nuvoton Microcontroller IC

Nuvoton W78E054D Microcontroller in 8051 MCU configurable operating at 2.4V to 5.5V in DIP40 package

The W78E054DDG is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption. The instruction set for the W78E054D is fully compatible with the standard 8052.

The W78E054DDG series contains 16K/8K bytes Flash EPROM programmable by hardware writer; a 256 bytes RAM; four 8-bit bi-directional (P0, P1, P2, P3) 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 8 sources 4-level interrupt capability. To facilitate programming and verification, the Flash EPROM inside the W78E054D/W78E052D series allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.

The W78E054D 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. The W78E054 contains In-System Programmable (ISP) 2KB LDROM for loader program, operating voltage from 3.3V to 5.5V.

FEATURES of W78E054DDG Nuvoton Microcontroller

• Fully static design 8-bit CMOS microcontroller
• Optional 12T or 6T mode
• 12T Mode, 12 clocks per machine cycle operation (default), Speed up to 40 MHz/5V
• 6T Mode, 6 clocks per machine cycle operation set by the writer, Speed up to 20 MHz/5V
• Wide supply voltage of 2.4V to 5.5V
• Temperature grade is (-40oC~85oC)
• Pin and Instruction-sets compatible with MCS-51
• 256 bytes of on-chip scratchpad RAM
• 16K/8K bytes electrically erasable/programmable Flash EPROM
• 2K bytes LDROM support ISP function (Reference Application Note)
• 64KB program memory address space
• 64KB data memory address space
• Four 8-bit bi-directional ports
• 8-sources, 4-level interrupt capability
• One extra 4-bit bit-addressable I/O port, additional INT2/INT3 (available on PQFP, PLCC and LQFP package)
• Three 16-bit timer/counters
• One full duplex serial port
• Watchdog Timer
• EMI reduction mode
• Software Reset
• Built-in power management with idle mode and power down mode
• Code protection
• Package: DIP40

Related Links

• W78E054DDG Microcontroller Datasheet

Package Includes

1 x W78E054DDG Nuvoton Microcontroller