P87C554

General description

The P87C554 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C554 has the same instruction set as the 80C51.

The 87C554 contains a 16k x 8 non-volatile EPROM, a 512 x 8 read/write data memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit timer/event counters (identical to the timers of the 80C51), an additional 16-bit timer coupled to capture and compare latches, a 15-source, four-priority-level, nested interrupt structure, an 8-input ADC, a dual DAC pulse width modulated interface, two serial interfaces (UART and I²C-bus), a "watchdog" timer and on-chip oscillator and timing circuits. For systems that require extra capability, the P87C554 can be expanded using standard TTL compatible memories and logic.

In addition, the P87C554 has two software selectable modes of power reduction-idle mode and power-down mode. The idle mode freezes the CPU while allowing the RAM, timers, serial ports, and interrupt system to continue functioning. Optionally, the ADC can be operated in Idle mode. The power-down mode saves the RAM contents but freezes the oscillator, causing all other chip functions to be inoperative.

The device also functions as an arithmetic processor having facilities for both binary and BCD arithmetic plus bit-handling capabilities. The instruction set consists of over 100 instructions: 49 one-byte, 45 two-byte, and 17 three-byte. With a 16 MHz crystal, 58 pct. of the instructions are executed in 0.75 us and 40 pct. in 1.5 us. Multiply and divide instructions require 3 us.

Features

• 80C51 central processing unit
• 16k x 8 EPROM expandable externally to 64k bytes
• An additional 16-bit timer/counter coupled to four capture registers and three compare registers
• Two standard 16-bit timer/counters
• 512 x 8 RAM, expandable externally to 64k bytes
• Capable of producing eight synchronized, timed outputs
• A 10-bit ADC with eight multiplexed analog inputs
• Fast 8-bit ADC option
• Two 8-bit resolution, pulse width modulation outputs
• Five 8-bit I/O ports plus one 8-bit input port shared with analog inputs
• I²C-bus serial I/O port with byte oriented master and slave functions
• On-chip watchdog timer
• Extended temperature ranges
• Full static operation - 0 to 16 MHz
• Operating voltage range: 2.7 V to 5.5 V (0 to 16 MHz) and 4.5 V to 5.5 V (16 to 33 MHz)
• Three security bits
• Encryption array - 64 bytes
• 4 level priority interrupt
• 15 interrupt sources
• Full-duplex enhanced UART
  • Framing error detection
  • Automatic address recognition
• Power control modes
  • Clock can be stopped and resumed
  • Idle mode
  • Power down mode
• Second DPTR register
• ALE inhibit for EMI reduction
• Programmable I/O pins
• Wake-up from power-down by external interrupts
• Software reset
• Power-on detect reset
• ADC charge pump disable
• ONCE mode
• ADC active in Idle mode

Products/packages

Pricing/ordering/availability

Applications

Related applications
Digital media adapters
LCD display - discretes focus
PDA - discretes focus
HID
Projector
Intelligent washing machine
Transceiver board
Power amplifier board
Main CPU board
LCD TV - MMS functionality
Color mixing for RGBA LEDs

Block diagrams/pinning

Technical documents

Application Notes

AN10155_1; AN10155: Philips LPC9xx microcontroller in I2C applications (21-Jun-02)

AN10289_1; LPC900 external crystal start-up (27-Apr-04)

AN10342_1; Using LPC900 code Flash as data storage (13-Dec-04)

Support Documents

75012064; 8xC554 (2004-02-12)

flash_as_datastorage_lpc900; Flash as Data storage LPC900.zip (17-Dec-04)

philips_i2c_logic_overview; Interface Products Business Line Specialty Logic Product Line I2C Logic Family Overview (2004-01-01)

li_ion_battery_charger; Li-ion Battery charger (17-Dec-04)

75011106; P8xC554 Leaflet (2003-03-07)

75014621; Philips - The Innovation Leader in Microcontrollers (2005-03-01)

75013474; Philips -- The Innovation Leader in Microcontrollers (2004-06-30)

75012668; Philips Microcontroller Line Card (2004-02-24)

75013987; Philips The Innovation Leader in Microcontrollers LPC2000/LPC900/LPC700 Series and 80C51 Family (2005-01-21)

75015572; The innovation leader in microcontrollers (2006-09-01)

Parametrics/similar products

Similar products

P87C554 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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