2001 Apr 06

3

Philips Semiconductors

Preliminary specification

P87C51MB2/P87C51MC2

80C51 8-bit microcontroller family with extended memory

64KB/96KB OTP with 2KB/3KB RAM

COMPLETE FEATURES

• Fully static

• Up to 24 MHz CPU clock with 6 clock cycles per machine cycle

• 96 Kbytes or 64 Kbytes of on-chip OTP

• 3 Kbytes or 2 Kbytes of on-chip RAM

• 23-bit program memory space and 23-bit data memory space

• Four-level interrupt priority

• 34 I/O lines (5 ports)

• Three Timers: Timer0, Timer1 and Timer2

• Two full-duplex enhanced UARTs with baud rate generator

• Framing error detection

• Automatic address recognition

• Supports industry-standard Serial Peripheral Interface (SPI) with a baud rate up to 6 Mbits/sec

• Power control modes

• Clock can be stopped and resumed

• Idle mode

• Power down mode

• Second DPTR register

• Asynchronous port reset

• Programmable Counter Array (PCA) (compatible with 8xC51Rx+) with five Capture/Compare modules

• Low EMI (inhibit ALE)

• Watchdog timer with programmable prescaler for different time ranges (compatible with 8xC66x with added prescaler)

ORDERING INFORMATION

PART ORDER NUMBER

MEMORY

TEMPERATURE

RANGE AND

PACKAGE

RANGE

FREQUENCY

DWG #

OTP

RAM

2.7-5.5V

4.5-5.5V

1

P87C51MB2BA

64 KB

2048 B

0 to +70°C, PLCC44

2.7-5.5V

4.5-5.5V

0-12MHz

0-24MHz

SOT187-2

2

P87C51MC2BA

96 KB

3072 B

0 to +70°C, PLCC44

2.7-5.5V

4.5-5.5V

0-12MHz

0-24MHz

SOT187-2