Winbond Electronics Corporation W78L52
The W78L52 microcontroller supplies a wider frequency and supply voltage range than most 8-bit microcontrollers on the market. It is compatible with the industry standard 80C52 microcontroller series. The W78L52 contains four 8-bit bidirectional parallel ports, one extra 4-bit bit-addressable I/O port (Port 4) and two additional external interrupts ( INT2 , INT3 ), three 16-bit timer/counters, one watchdog timer and a serial port.GENERAL DESCRIPTION
These peripherals are supported by a eight-source, two-level interrupt capability. There are 256 bytes of RAM and an 8K byte mask ROM for application programs. The W78L52 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● Supply voltage of 1.8V to 5.5V
● DC-24 MHz operation
● 256 bytes of on-chip scratchpad RAM
● 8K bytes of on-chip mask ROM
● 64K bytes program memory address space
● 64K bytes data memory address space
● Four 8-bit bidirectional ports
● Three 16-bit timer/counters
● One full duplex serial port
● Eight-source, two-level interrupt capability
● One extra 4-bit bit-addressable I/O port
● Two ad...