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W78E365

8-bit CMOS microcontroller

Winbond 

W78E365/W78E365A

1. 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.

The W78E365 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.

2. FEATURES

x Fully static design 8-bit CMOS microcontroller

x 64K bytes of in-system programmable Flash EPROM for Application Program (APROM)

x 4K bytes of auxiliary ROM for Loader Program (LDROM)

x 256+1K bytes of on-chip RAM. (Including 1K bytes of AUX-RAM, software selectable)

x Four 8-bit bi-directional ports; Port 0 has internal pull-up resisters enabled by software

x One 4-bit multipurpose programmable port (I/O, interrupt, Chip select function)

x Three 16-bit timer/counters

x One full duplex serial port

x Watchdog timer

x 5 channel PWM

x Software Reset

x P1.0 T2 programmable clock out

x Eight-sources, two-level interrupt capability

x Built-in power management

x Code protection

x 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

Publication Release Date: January 10, 2007

-3-

Revision A9

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