W78E516B40DL Datasheet



The W78E516B is an 8-bit microcontroller which has an in-system programmable Flash EPROM for firmware updating. The instruction set of the W78E516B is fully compatible with the standard 8052. The W78E516B contains a 64K bytes of main Flash EPROM and a 4K bytes of auxiliary Flash EPROM which allows the contents of the 64KB main Flash EPROM to be updated by the loader program located at the 4KB auxiliary Flash EPROM ROM; 512 bytes of on-chip RAM; four 8-bit bidirectional and bit-addressable I/O ports; an additional4-bit port P4; three 16-bit timer/counters; a serial port. These peripherals are supported by a eight sources two-level interrupt capability.

•  Fully static design 8-bit CMOS microcontroller up to 40 MHz.
•  64K bytes of in-system programmable Flash EPROM for Application Program (APROM).
•  4K bytes of auxiliary Flash EPROM for Loader Program (LDROM).
•  512 bytes of on-chip RAM. (including 256 bytes of AUX-RAM, software selectable)
•  64K bytes program memory address space and 64K bytes data memory address space.
•  Four 8-bit bi-directional ports.
•  One 4-bit multipurpose programmable port.
•  Three 16-bit timer/counters
•  One full duplex serial port
•  Six-sources, two-level interrupt capability
•  Built-in power management
•  Code protection
•  Packaged in
− Lead Free (ROHS) DIP 40: W78E516B40DL
−Lead Free (ROHS) PLCC 44: W78E516B40PL
−Lead Free (ROHS) PQFP 44: W78E516B40FL 



Manufacturer information

Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
Request for Datasheet

  • Part No     :
  • Your Email:
  • Content     :

related datasheet
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us


One to One Customer Service