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87C552 Datasheet(PDF) 2 Page - NXP Semiconductors |
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87C552 Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 24 page  Philips Semiconductors Product specification 87C552 80C51 8-bit microcontroller 8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O 2 1998 May 01 853-1690 19336 DESCRIPTION The 87C552 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C552 has the same instruction set as the 80C51. Three versions of the derivative exist: • 83C552—8k bytes mask programmable ROM • 80C552—ROMless version of the 83C552 • 87C552—8k bytes EPROM The 87C552 contains a 8k × 8 a volatile 256 × 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, two-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 87C552 can be expanded using standard TTL compatible memories and logic. In addition, the 87C552 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. 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 16MHz crystal, 58% of the instructions are executed in 0.75 µs and 40% in 1.5µs. Multiply and divide instructions require 3 µs. FEATURES • 80C51 central processing unit • 8k × 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 • 256 × 8 RAM, expandable externally to 64k bytes • Capable of producing eight synchronized, timed outputs • A 10-bit ADC with eight multiplexed analog inputs • 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 • Full-duplex UART compatible with the standard 80C51 • On-chip watchdog timer • 16MHz speed • Extended temperature ranges • OTP package available ORDERING INFORMATION EPROM TEMPERATURE °C AND PACKAGE FREQ MHz DRAWING NUMBER S87C552-4A68 0 to +70, Plastic Leaded Chip Carrier 16 SOT188-3 S87C552-4BA 0 to +70, Plastic Quad Flat Pack 16 SOT318-2 S87C552-5A68 –40 to +85, Plastic Leaded Chip Carrier 16 SOT188-3 NOTE: 1. For ROM and ROMless see data sheet 80C552/83C552 |
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