Philips Semiconductors

Product data

89C51/89C52/89C54/89C58

80C51 8-bit microcontroller family

4K/8K/16K/32K Flash

2

2002 Jan 15

853–2148 27548

DESCRIPTION

The 89C51/89C52/89C54/89C58 contain a non-volatile FLASH

program memory that is parallel programmable. For devices that are

serial programmable (In-System Programmable (ISP) and

In-Application Programmable (IAP) with a boot loader), see the

89C51Rx2 or 89C66x datasheets.

All three families are Single-Chip 8-bit Microcontrollers

manufactured in advanced CMOS process and are derivatives of

the 80C51 microcontroller family. All the devices have the same

instruction set as the 80C51.

SELECTION TABLE FOR FLASH DEVICES

MTP devices

(this data sheet)

ISP/IAP devices

(see separate data sheets)

89C51

89C52/54/58

89C51Rx2

89C66x

ROM/EPROM memory size

4K

8K/16K/32K

16K–64K

16K–64K

RAM size (byte)

128

256

512–1K

512–8K

Parallel programming

yes

yes

yes

yes

In-System Programming (ISP)

no

no

yes

yes

In-Application Programming (IAP)

no

no

yes

yes

PWM

no

no

yes

yes

Programmable Timer/Counter (PCA)

no

no

yes

yes

Hardware Watchdog Timer

no

no

yes

yes

Serial Channels

UART

UART

UART

MTP = Multi-Time Programming (via parallel programmer)

ISP = In-System Programming (via serial interface)

IAP = In-Application Programming

Please note that the FLASH programming algorithm for these parts has been modified. Please see the Device Comparison table for details.

DEVICE COMPARISON TABLE

Item

Old devices

New devices

Reason for change

Type description

P89C5xUBxx / P89C5xUFxx

P89C5xBx

Letter U dropped for shorter type

descriptions (formerly designated

speed (0–33 MHz))

Programming algorithm

When using parallel programmer,

be sure to select P89C5xUxxx

devices

When using a parallel program-

mer, be sure to select P89C5xBx

devices (no more letter U). IF

DEVICES ARE NOT YET SE-

LECTABLE, ASK YOUR VEN-

DOR FOR A SOFTWARE UP-

DATE.

Programming algorithm modifica-

tion required by process change!

Quad Flat Package type

PQFP package (P89C5xUxBB)

PQFP package replaced by

LQFP package (P89C5xBBD).

SEE NEW DIMENSIONS AT

THE END OF THIS DATA

SHEET.

Reduction in package height

Package identifiers

PLCC = AA

PQFP = BB

PDIP = PN

PLCC = A

LQFP = BD

PDIP = P

Shorter type descriptions

Flash memory program and

erase cycles

100 program and erase cycles

10,000 program and erase

cycles

Process change allows more pro-

gram and erase cycles

Power consumption

(0.9

FREQ. + 20)mA

(0.37

FREQ. + 1.0)mA

(0.55

FREQ. + 8.0)mA

(0.3

FREQ. + 2.0)mA

Process change allows lower

power consumption