This document describes the features and specifications of the MOSEL VITELIC MSU2051/U2031 product. The product is an 8-bit single chip microcontroller, which is compatible with the 80C51 family. It has a wide range of applications and a powerful instruction set. The product supports 64KB external memory space, 4KB ROM, and 128-byte data RAM. It also provides various hardware features, such as two 16-bit timers/counters, four 8-bit I/O ports, and a full duplex serial channel. The product supports multiple working voltages and power save modes.
The document describes the MVI MSU2051 series product as an 8-bit single chip microcontroller compatible with the Hi General 80C51 family. It provides hardware features necessary for versatile applications, including up to 32 I/O pins and support for external memory expansion.
| Architecture Compatibility | Hi General 80C51 family compatible |
|---|---|
| External Memory Space | 64K byte External Memory Space |
| Internal ROM Size | 4K byte ROM |
| Data RAM Size | 128byte data RAM |
| Timers/Counters | Two 16 bit Timers/Counters |
| I/O Ports | Four &-bit 1/0 ports |
The L series operates at 2.7V through 4.5V, while the S and C series operate at 4.5V through 5.5V.
The reset signal must be held high for two machine cycles, which equals 24 clocks.
The reset does not clear the data in RAM, so the data is preserved.