INTEGRATED CIRCUITS
P89C51X2/52X2/54X2/58X2
80C51 8-bit Flash microcontroller family
4K/8K/16K/32K Flash 128B/256B RAM
...
INTEGRATED CIRCUITS
P89C51X2/52X2/54X2/58X2
80C51 8-bit Flash microcontroller family
4K/8K/16K/32K Flash 128B/256B RAM
Preliminary data Supersedes data of 2002 Feb 28
2002 Jun 05
Philips Semiconductors
Philips Semiconductors
80C51 8-bit Flash microcontroller family
4K/8K/16K/32K Flash
Preliminary data
P89C51X2/52X2/54X2/58X2
DESCRIPTION
The Philips microcontrollers described in this data sheet are high-performance static 80C51 designs. They are manufactured in an advanced
CMOS process and contain a non-volatile Flash program memory. They support both 12-clock and 6-clock operation.
The P89C51X2 and P89C52X2/54X2/58X2 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.
In addition, the devices are static designs which offer a wide range of operating frequencies down to zero. Two software 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 th...