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P89V51RD2BN

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P89V51RD2 8bit 80C51 5 V low power 64 kB Flash microcontroller with 1 kB RAM Rev 01 01 March 2004 Product data 1 General description 2 Features The P89V51RD2 is an 80C51 microcontroller with 64 kB Flash and 1024 bytes of data RAM A key feature of the P89V51RD2 is its X2 mode option The design engineer can choose to run the application with the conventional 80C51 clock rate 12 clocks per machine cycle or select the X2 mode 6 clocks per machine cycle to achieve twice the throughput at the same cl......

P89V51RD2

8-bit 80C51 5 V low power 64 kB Flash microcontroller

with 1 kB RAM

Rev. 01 — 01 March 2004

Product data

1. General description

The P89V51RD2 is an 80C51 microcontroller with 64 kB Flash and 1024 bytes of

data RAM.

A key feature of the P89V51RD2 is its X2 mode option. The design engineer can

choose to run the application with the conventional 80C51 clock rate (12 clocks per

machine cycle) or select the X2 mode (6 clocks per machine cycle) to achieve twice

the throughput at the same clock frequency. Another way to beneﬁt from this feature

is to keep the same performance by reducing the clock frequency by half, thus

dramatically reducing the EMI.

The Flash program memory supports both parallel programming and in serial

In-System Programming (ISP). Parallel programming mode offers gang-programming

at high speed, reducing programming costs and time to market. ISP allows a device

to be reprogrammed in the end product under software control. The capability to

ﬁeld/update the application ﬁrmware makes a wide range of applications possible.

The P89V51RD2 is also In-Application Programmable (IAP), allowing the Flash

program memory to be reconﬁgured even while the application is running.

2. Features

80C51 Central Processing Unit

5 V Operating voltage from 0 to 40 MHz

64 kB of on-chip Flash program memory with ISP (In-System Programming) and

IAP (In-Application Programming)

Supports 12-clock (default) or 6-clock mode selection via software or ISP

SPI (Serial Peripheral Interface) and enhanced UART

PCA (Programmable Counter Array) with PWM and Capture/Compare functions

Four 8-bit I/O ports with three high-current Port 1 pins (16 mA each)

Three 16-bit timers/counters

Programmable Watchdog timer (WDT)

Eight interrupt sources with four priority levels

Second DPTR register

Low EMI mode (ALE inhibit)

TTL- and CMOS-compatible logic levels

Philips Semiconductors

P89V51RD2

8-bit microcontrollers with 80C51 core

Brown-out detection

Low power modes

Power-down mode with external interrupt wake-up

Idle mode

PDIP40, PLCC44 and TQFP44 packages

3. Ordering information

Table 1:

Ordering information

Package

Name

P89V51RD2FA

P89V51RD2FBC

P89V51RD2BN

PLCC44

TQFP44

PDIP40

Description

plastic leaded chip carrier; 44 leads

plastic thin quad ﬂat package; 44 leads

plastic dual in-line package; 40 leads

SOT187-2

SOT376-1

SOT129-1

Version

Type number

3.1 Ordering options

Table 2:

Ordering options

Temperature range

°C

to +85

°C

to +85

°C

to +70

°C

Frequency

0 to 40 MHz

Type number

P89V51RD2FA

P89V51RD2FBC

P89V51RD2BN

9397 750 12964

Product data

Rev. 01 — 01 March 2004

2 of 75

Philips Semiconductors

P89V51RD2

8-bit microcontrollers with 80C51 core

4. Block diagram

HIGH PERFORMANCE

80C51 CPU

64 kB

CODE FLASH

INTERNAL

BUS

1 kB

DATA RAM

UART

SPI

PORT 3

TIMER 0

TIMER 1

PORT 2

TIMER 2

PORT 1

PCA

PROGRAMMABLE

COUNTER ARRAY

PORT 0

WATCHDOG TIMER

CRYSTAL

RESONATOR

OSCILLATOR

002aaa506

Fig 1. P89V51RD2 block diagram.

9397 750 12964

Product data

Rev. 01 — 01 March 2004

3 of 75

Philips Semiconductors

P89V51RD2

8-bit microcontrollers with 80C51 core

5. Pinning information

5.1 Pinning

6 P1.4/SS/CEX1

5 P1.3/CEX0

3 P1.1/T2EX

43 P0.0/AD0

42 P0.1/AD1

41 P0.2/AD2

CEX2/MOSI/P1.5

CEX3/MISO/P1.6

CEX4/SCK/P1.7

40 P0.3/AD3

4 P1.2/ECI

2 P1.0/T2

44 VCC

1 NC

39 P0.4/AD4

38 P0.5/AD5

37 P0.6/AD6

36 P0.7/AD7

35 EA

RST 10

RXD/P3.0 11

NC 12

TXD/P3.1 13

INT0/P3.2 14

INT1/P3.3 15

T0/P3.4 16

T1/P3.5 17

P89V51RD2FA

34 NC

33 ALE/PROG

32 PSEN

31 P2.7/A15

30 P2.6/A14

29 P2.5/A13

WR/P3.6 18

RD/P3.7 19

XTAL2 20

XTAL1 21

VSS 22

NC 23

A8/P2.0 24

A9/P2.1 25

A10/P2.2 26

A11/P2.3 27

A12/P2.4 28

002aaa810

Fig 2. PLCC44 pin conﬁguration.

9397 750 12964

Product data

Rev. 01 — 01 March 2004

4 of 75

Philips Semiconductors

P89V51RD2

8-bit microcontrollers with 80C51 core

handbook, halfpage

T2/P1.0 1

T2EX/P1.1 2

ECI/P1.2 3

CEX0/P1.3 4

CEX1/SS/P1.4 5

CEX2/MOSI/P1.5 6

CEX3/MISO/P1.6 7

CEX4/SCK/P1.7 8

40 VDD

39 P0.0/AD0

38 P0.1/AD1

37 P0.2/AD2

36 P0.3/AD3

35 P0.4/AD4

34 P0.5/AD5

33 P0.6/AD6

RXD/P3.0 10

TXD/P3.1 11

INT0/P3.2 12

INT1/P3.3 13

T0/P3.4 14

T1/P3.5 15

WR/P3.6 16

RD/P3.7 17

XTAL2 18

XTAL1 19

VSS 20

P89V51RD2BN

RST 9

32 P0.7/AD7

31 EA

30 ALE/PROG

29 PSEN

28 P2.7/A15

27 P2.6/A14

26 P2.5/A13

25 P2.4/A12

24 P2.3/A11

23 P2.2/A10

22 P2.1/A9

21 P2.0/A8

002aaa811

Fig 3. PDIP40 pin conﬁguration.

9397 750 12964

Product data

Rev. 01 — 01 March 2004

5 of 75

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