IN80CL31N Datasheet, PDF (1/2 Pages) Integral Corp. – CMOS LOW-VOLTAGE SINGLE-CHIP 8-BIT MICROCONTROLLER

IN80CL31N/IN80CL51N
CMOS LOW-VOLTAGE SINGLE-CHIP 8-BIT MICROCONTROLLER
The 80CL31/80CL51 is a high-performance microcontroller fabricated with high-density
CMOS technology. The instruction set is based on that the 80C51.The 80CL51 is general
purpose microcontroller especially suited for battery powered applications. The device has
low power consumption and a wide range of supply voltage.
The 80CL51 contains a 4k x 8 ROM , a 128 x 8 RAM , 32 I/O lines, two 16-bit
counter/timers, a five-source, two-priority level nested interrupt structure, a serial I/O port
for either multi-processor communications, I/O expansion or full duplex UART, and on-
chip oscillator and clock circuits.
The device has two software selectable modes of power reduction  idle mode and
power-down mode. The idle mode freezes the CPU while allowing the RAM, timers, serial
port, and interrupt system to continue functioning. The power-down mode saves the RAM
contents but freezes the oscillator, causing all other chip functions to be inoperative.
FEATURES
 Full static 80C51 CPU
 4k x 8 ROM (80CL51)
 ROMless (80CL31)
 128 x 8 RAM
 Two 16-bit counter/timers
 Full duplex serial channel
 Boolean processor
 Memory addressing capability
 64k ROM and 64k RAM
 Power control modes:
 Idle mode
 Power-down mode
 CMOS and TTL compatible
 Thirteen source, thirteen vector
interrupt structure with two priority levels
 Wake-up via external interrupts in
Port1
 Single supply voltage of 1.8V to 6.0V
 Frequency range of 0 to 16 MHz
 Very low current consumption
PIN CONFIGURATIONS
I N T 2 /P P1 .10.0 1
IN T 3/P 1.1
2
IN T 4/P 1.2
3
IN T 5/P 1.3
4
IN T 6/P 1.4
5
IN T 7/P 1.5
6
IN T 8/P 1.6
7
IN T 9/P 1.7
8
RST
T A /P 3.0
O C K /P 3.2
9
P L A S T IC
DUAL
10 _{IN -LIN E}
PACKAGE
11
IN T 0/P 3.2 1 2
IN T 1/P 3.3 1 3
T 0/P 3.4
14
T 1/P 3.5
15
W R /P36 16
R D /P 3 .7 1 7
XTAL2 18
XTAL1 19
Vss 20
40 Vcc
3 9 P 0 .0 /A D 0
3 8 P 0 .1 /A D 1
3 7 P 0 .2 /A D 2
3 6 P 0 .3 /A D 3
3 5 P 0 .4 /A D 4
3 4 P 0 .5 /A D 5
3 3 P 0 .6 /A D 6
3 2 P 0 .7 /A D 6
31 EA
30 ALE
29 PSEN
2 8 P 2 .7 /A 15
2 7 P 2 .6 /A 14
2 6 P 2 .5 /A 13
2 5 P 2 .4 /A 12
2 4 P 2 .3 /A 11
2 3 P 2 .2 /A 10
2 2 P 2 .1 /A 9
2 1 P 2 .0 /A 8
CMOS single-chip 8-bit microcontroller 80CL31/80CL51
1