Philips P89LPC903, P89LPC902 Additional Port Features, Port Output Configuration P89LPC901

Models: P89LPC903 P89LPC902 P89LPC901

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Philips Semiconductors

 

 

 

 

 

User’s Manual - Preliminary -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O PORTS

 

 

 

 

P89LPC901/902/903

 

 

Table 4-3: Port Output Configuration - P89LPC901

 

 

 

 

 

 

 

Port

Configuration SFR Bits

Alternate Usage

Notes

 

 

 

 

Pin

PxM1.y

PxM2.y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.4

P0M1.4

P0M2.4

KBI4,CIN1A

Refer to section "Port 0 Analog Functions" for usage as

 

 

 

 

P0.5

P0M1.5

P0M2.5

KBI5,CMPREF

analog inputs CINxA and CMPREF.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P1.2

P1M1.2

P1M2.2

 

T0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input only. Usage as general purpose input or

 

is

 

 

 

 

P1.5

not configurable

 

 

 

RST

 

 

 

 

RST

 

determined by User Configuration Bit RPD (UCFG1.6).

 

 

 

 

 

 

 

 

 

 

Always a reset input during a power-on sequence.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P3.0

P3M1.0

P3M2.0

XTAL2,CLKOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P3.1

P3M1.1

P3M2.1

XTAL1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 4-4: Port Output Configuration - P89LPC902

 

 

 

 

 

 

 

Port

Configuration SFR Bits

Alternate Usage

Notes

 

 

 

 

Pin

PxM1.y

PxM2.y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.0

P0M1.0

P0M2.0

KBI0,CMP2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.2

P0M1.2

P0M2.2

KBI2,CIN2A

Refer to section "Port 0 Analog Functions" for usage as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.4

P0M1.4

P0M2.4

KBI4,CIN1A

analog inputs CINxA and CMPREF.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.5

P0M1.5

P0M2.5

KBI5,CMPREF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.6

P0M1.6

P0M2.6

KBI6,CMP1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input only. Usage as general purpose input or

 

is

 

 

 

 

P1.5

not configurable

 

 

 

RST

 

 

 

 

RST

 

determined by User Configuration Bit RPD (UCFG1.6).

 

 

 

 

 

 

 

 

 

 

Always a reset input during a power-on sequence.

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 4-5: Port Output Configuration - P89LPC903

 

 

 

 

 

 

 

Port

Configuration SFR Bits

Alternate Usage

Notes

 

 

 

 

Pin

PxM1.y

PxM2.y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.2

P0M1.2

P0M2.2

KBI2,CIN2A

Refer to section "Port 0 Analog Functions" for usage as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.4

P0M1.4

P0M2.4

KBI4,CIN1A

 

 

 

 

analog inputs CINxA and CMPREF.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P0.5

P0M1.5

P0M2.5

KBI5,CMPREF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P1.0

P1M1.0

P1M2.0

 

TxD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P1.1

P1M1.1

P1M2.1

 

RxD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input only. Usage as general purpose input or

 

is

 

 

 

 

P1.5

not configurable

 

 

 

RST

 

 

 

 

RST

 

determined by User Configuration Bit RPD (UCFG1.6).

 

 

 

 

 

 

 

 

 

 

Always a reset input during a power-on sequence.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Additional Port Features

After power-up, all pins are in Input-Only mode. Please note that this is different from the LPC76x series of devices.

After power-up, all I/O pins except P1.5, may be configured by software.

Pin P1.5 is input only.

Every output on the P89LPC901/902/903 has been designed to sink typical LED drive current. However, there is a maximum total output current for all ports which must not be exceeded. Please refer to the P89LPC901/902/903 datasheet for detailed specifications.

2003 Dec 8

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Philips P89LPC903 Additional Port Features, Port Output Configuration P89LPC901, Port Output Configuration P89LPC902

P89LPC903, P89LPC902, P89LPC901 specifications

The Philips P89LPC901, P89LPC902, and P89LPC903 are a series of 8-bit microcontrollers designed for embedded system applications. These models, which belong to the LPC900 series, are notable for their affordability and versatility, making them an attractive choice for both hobbyists and professional developers.

One of the core features of the P89LPC901, P89LPC902, and P89LPC903 microcontrollers is their powerful 8-bit architecture. Operating at clock speeds up to 20 MHz, they deliver efficient performance suited for a range of tasks. Each model includes a comprehensive instruction set that supports various data manipulation and arithmetic functions, enabling extensive programming capabilities.

These microcontrollers come with built-in memory, with configurations that vary among the three models. The P89LPC901 typically features 4 KB of Flash memory and 256 bytes of RAM, while the P89LPC902 and P89LPC903 offer enhanced memory options. This Flash memory allows for reprogrammability, making it easier to update and modify applications as needed.

Another significant characteristic of the LPC900 series is their integrated peripherals. These models are equipped with a variety of I/O ports, allowing for easy interfacing with other devices and components. The P89LPC901 supports up to 32 I/O pins, while the P89LPC902 and P89LPC903 provide additional features such as analog-to-digital converters (ADCs), timers, and serial communication interfaces. This broad range of peripherals empowers developers to design complex applications without needing extra hardware.

Power consumption is also a key consideration for microcontroller applications. The P89LPC901, P89LPC902, and P89LPC903 are designed with low power consumption in mind, making them ideal for battery-operated devices and energy-efficient projects. They can operate in various power modes, allowing for greater flexibility in deployment.

In terms of technology, these microcontrollers utilize advanced CMOS technology, ensuring high reliability and durability. Their design offers a robust solution for numerous applications, including consumer electronics, industrial controls, and automation systems.

In summary, the Philips P89LPC901, P89LPC902, and P89LPC903 microcontrollers present an attractive combination of performance, integrated peripherals, low power consumption, and versatility. Their features cater to a wide array of applications, keeping them relevant in a rapidly evolving technology landscape. For hobbyists and professionals alike, these microcontrollers represent a reliable foundation for embedded system development.