Product Summary

The W78E516D/W78E058D series is an 8-bit microcontroller which has an in-system programmable
Flash EPROM for on-chip firmware updating.
The instruction sets of the W78E516D/W78E058D are fully compatible with the standard 8052. The
W78E516D/W78E058D series contains a 64K/32K bytes of main Flash EPROM and a 4K bytes of
auxiliary Flash EPROM which allows the contents ofthe 64K/32K bytes main Flash EPROM to be updated by the loader program located in the 4K bytes Flash EPROM; a 256 bytes of SRAM; 256 bytes
of AUXRAM; 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 an 8 sources 2-level interrupt
capability. To facilitate programming and verification, the Flash EPROM inside the
W78E516D/W78E058D 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 W78E516D/W78E058D series 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.

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
W78E516DPG
W78E516DPG


IC MCU 8-BIT 64K FLASH 44-PLCC

Data Sheet

0-210: $1.47
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
W78E516B40FL
W78E516B40FL


IC MCU 8-BIT 64K FLASH 44-PQFP

Data Sheet

Negotiable 
W78E516B40PL
W78E516B40PL


IC MCU 8-BIT 64K FLASH 44-PLCC

Data Sheet

Negotiable 
W78E516DDG
W78E516DDG


IC MCU 8-BIT 64K FLASH 40-DIP

Data Sheet

0-200: $1.52
W78E516DFG
W78E516DFG


IC MCU 8-BIT 64K FLASH 44-PQFP

Data Sheet

0-288: $1.33
W78E516DPG
W78E516DPG


IC MCU 8-BIT 64K FLASH 44-PLCC

Data Sheet

0-210: $1.47
W78E858A40DL
W78E858A40DL


IC MCU 8-BIT 32K FLASH 40-DIP

Data Sheet

0-110: $2.84