80C31/80C51
CMOS 0 to 42 MHz Single-Chip 8 Bit Microcontroller
Description
TEMIC’s 80C31 and 80C51 are high performance In addition, the 80C51 has two software-selectable modes
SCMOS versions of the 8051 NMOS single chip 8 bit µC. of reduced activity for further reduction in power
consumption. In the Idle Mode the CPU is frozen while
The fully static design of the TEMIC 80C31/80C51
the RAM, the timers, the serial port, and the interrupt
allows to reduce system power consumption by bringing
system continue to function. In the Power Down Mode the
the clock frequency down to any value, even DC, without
RAM is saved and all other functions are inoperative.
loss of data.
The 80C31 is identical to the 80C51 except that it has no
The 80C51 retains all the features of the 8051 : 4 K bytes
on–chip ROM.
of ROM ; 128 bytes of RAM ; 32 I/O lines ; two 16 bit
TEMIC’s 80C31/80C51 are manufactured using SCMOS
timers ; a 5-source, 2-level interrupt structure ; a full
process which allows them to run from 0 up to 42 MHz
duplex serial port ; and on-chip oscillator and clock
with VCC = 5 V. TEMIC’s 80C31 and 80C51 are also
circuits.
available at 16 MHz with 2.7 V < Vcc < 5.5 V and at
4 MHz with 1.8 V < Vcc < 5.5 V.
D 80C31 : Romless version of the 80C51
D 80C31/80C51 -V4 : Very Low Voltage version
Vcc : 1.8-5.5 V Freq : 0-4 MHz
D 80C31/80C51-25 : 0 to 25 MHz
D 80C31/80C51-30 : 0 to 30 MHz
D 80C31/80C51-36 : 0 to 36 MHz
D 80C31–40 : 0 to 40 MHz*
D 80C31/80C51-L16 : Low power version
Vcc : 2.7–5.5 V Freq : 0–16 MHz
D 80C31/80C51-12 : 0 to 12 MHz
D 80C31–42 : 0 to 42 MHz*
* 0 to 70°C temperature range. For other speed and range please
consult your sale office.
D 80C31/80C51-20 : 0 to 20 MHz
Features
D Power control modes
D Fully static design
D 128 bytes of RAM
D 0.8 µm CMOS process
D Boolean processor
D 4 K bytes of ROM (80C51)
D 32 programmable I/O lines
D Two 16 bit timer/counter
D 64 K program memory space
D 64 K data memory space
D 5 interrupt sources
D Programmable serial port
D Temperature range : commercial, industrial, automotive and
military
Optional
D Secret ROM : Encryption
D Secret TAG : Identification number
MATRA MHS
1
Rev. D (27/09/96)