Note that in this procedure, the MCU’s Reset (RST) pin is controlled by the programmer hence, a power cycling should become necessary in most situations. The same development of 89S52 can be used for Nuvotone IC. You can use “Nuvoton ISP-ICP Utility software” to program the target MCU with the help of a USB TO RS232 Cableĭriver for CH340 to be installed in PC, for COM port allotment. Note that the actual part number of the chip in the 40-pin DIP package is W78E052DDGīecause the Nuvoton W78E052D microcontroller comes with a UART boot-loader, it can directly be programmed from the serial (COM) port. The instruction set is fully compatible with the standard 8052. It contains an 8K-byte Flash EPROM, a 256-byte RAM four 8-bit bi-directional (P0, P1, P2, P3) and bit-addressable I/O ports, an additional 4-bit I/O port P4 three 16-bit timer/counters, a hardware watchdog timer, and a serial port Other specifications match exactly 89S52. It supports ISP program downloading from PC using RX-TX lines only. This chip has separate dedicated 2K boot-loader memory, which makes this chip robust and very stable. W78E052DDG is 8051 compatible 8-bit controller from Nuvoton with 8K programmable flash memory in 40 Pin DIP package
It is programmed using ICSP with an external programmer USBASP (AVRDUDE).Ĩ9S52 has no BOOTLOADER, so it cannot be programmed through SERIAL Port.
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