GENERAL DESCRIPTION
The W78E365 is an 8-bit microcontroller which has an in-system programmable Flash EPROM for firmware updating. The instruction set of the W78E365 is fully compatible with the standard 8052. The W78E365 contains a 64K bytes of main Flash APROM and a 4K bytes of auxiliary Flash LDROM
which allows the contents of the 64KB main APROM to be updated by the loader program located at the LDROM; 256+1K bytes of on-chip RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters; a serial port. These peripherals are supported by a eight sources two-level interrupt capability. To facilitate programming and verification, the ROM inside the W78E365 allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.

ftware
ammable port (I/O, interrupt, Chip select function)
al port
out
level interrupt capability
x
x
−Lead Free (RoHS) PLCC 44:  W78E365A40PL
−Lead Free (RoHS) PQFP 44:  W78E365A40FL
−Lead Free (RoHS) LQFP 48: W78E365A40LL
FEATURES
• Fully static design 8-bit CMOS microcontroller
• 64K bytes of in-system programmable Flash EPROM for Application Program (APROM)
• 4K bytes of auxiliary ROM for Loader Program (LDROM)
• 256+1K bytes of on-chip RAM. (Including 1K bytes of AUX-RAM, software selectable)
• Four 8-bit bi-directional ports; Port 0 has internal pull-up resisters enabled by so
• One 4-bit multipurpose progr
• Three 16-bit timer/counters
• One full duplex seri
• Watchdog timer
• 5 channel PWM
• Software Reset
• P1.0 T2 programmable clock
• Eight-sources, two
• Built-in power management
• Code protection
Packaged in
−Lead Free (RoHS) DIP 40:   W78E365A40DL
−Lead Free (RoHS) PLCC 44:  W78E365A40PL
−Lead Free (RoHS) PQFP 44:  W78E365A40FL
−Lead Free (RoHS) LQFP 48: W78E365A40LL