Part Number : TSC80C31
Function : CMOS single-chip 8 bit microcontroller, external ROM, 128 bytes of RAM
Package : DIP, SO 40 Pin Type, PLCC 44 Pin Type
Maker : Temic Semiconductors
Pinouts : 
Description :
The TSC80C31 / TS80C51 is high performance SCMOS versions of the 8051 NMOS single chip 8 bit µC. The fully static design of the TSC80C31 / TSC80C51 allows to reduce system power consumption by bringing the clock frequency down to any value, even DC, without loss of data.
The TSC80C31 / TS80C51 retains all the features of the 8051 : 4 K bytes of ROM ; 128 bytes of RAM ; 32 I/O lines ; two 16 bit timers ; a 5-source, 2-level interrupt structure ; a full duplex serial port ; and on-chip oscillator and clock circuits.
Features :
1. Power control modes
2. 128 bytes of RAM
3. 4 K bytes of ROM (TSC80C31/80C51)
4. 32 programmable I/O lines
5. Two 16 bit timer/counter
6. 64 K program memory space
7. 64 K data memory space
Datasheet PDF Download : 
Others datasheet of same file :
TSC80C31-40A, TSC80C31-44AB, TSC80C31-44AC,
TSC80C31-44AD, TSC80C31-44AE