Philips Semiconductors
Product data
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
P80C3xX2; P80C5xX2;
P87C5xX2
selectable modes of power reduction — idle mode and power-down
mode — are available. 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. Since the design is static, the clock can be stopped
without loss of user data. Then the execution can be resumed from
the point the clock was stopped.
DESCRIPTION
The Philips microcontrollers described in this data sheet are
high-performance static 80C51 designs incorporating Philips’
high-density CMOS technology with operation from 2.7 V to 5.5 V.
They support both 6-clock and 12-clock operation.
The P8xC31X2/51X2 and P8xC32X2/52X2/54X2/58X2 contain
128 byte RAM and 256 byte RAM respectively, 32 I/O lines, three
16-bit counter/timers, a six-source, four-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.
SELECTION TABLE
For applications requiring more ROM and RAM, as well as more
on-chip peripherals, see the P89C66x and P89C51Rx2 data sheets.
In addition, the devices are low power static designs which offer a
wide range of operating frequencies down to zero. Two software
Type
Memory
Timers
Serial Interfaces
Max.
Freq.
at 6-clk
/ 12-clk
(MHz)
Freq.
Range
at 3V at
(MHz)
Freq.
Range
5V
(MHz)
256B
256B
256B
256B
256B
256B
128B
128B
256B
128B
–
32K
–
32K
–
–
–
–
–
–
–
–
–
–
3
3
3
3
3
3
3
3
3
3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
n
n
n
n
n
n
n
n
n
n
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
32
32
32
32
32
32
32
32
32
32
6 (2)
6 (2)
6 (2)
6 (2)
6 (2)
6 (2)
6 (2)
6 (2)
6 (2)
6 (2)
n
n
n
n
n
n
n
n
–
12–clk
12–clk
12–clk
12–clk
12–clk
12–clk
12–clk
12–clk
12–clk
12–clk
6-clk
6-clk
6-clk
6-clk
6-clk
6-clk
6-clk
6-clk
6-clk
6-clk
30/33
30/33
30/33
30/33
30/33
30/33
30/33
30/33
30/33
30/33
0–16
0–16
0–16
0–16
0–16
0–16
0–16
0–16
0–16
0–16
0–30/33
0–30/33
0–30/33
0–30/33
0–30/33
0–30/33
0–30/33
0–30/33
0–30/33
0–30/33
P87C58X2
P80C58X2
P87C54X2
P80C54X2
P87C52X2
P80C52X2
P87C51X2
P80C51X2
P80C32X2
P80C31X2
–
16K
–
16K
–
8K
–
8K
–
4K
–
4K
–
–
–
–
–
NOTE:
2
1. I C = Inter-Integrated Circuit Bus; CAN = Controller Area Network; SPI = Serial Peripheral Interface; PCA = Programmable Counter Array;
ADC = Analog-to-Digital Converter; PWM = Pulse Width Modulation
2
2003 Jan 24
853-2337 29260
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