DS87C550 datasheet(1/50 Pages) DALLAS

Part #	DS87C550

Description	EPROM High-Speed Micro with A/D and PWM

PDF	50 Pages

Scroll/Zoom	100%

Manufacturer	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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1 / 50 page

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061499

FEATURES

§ 87C52-Compatible

-

8051 pin- and instruction set-compatible

-

Three 16-bit timer/counters

-

256 bytes scratchpad RAM

§ On-chip Memory

-

8 kbytes EPROM (OTP & Windowed Packages)

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1 kbyte extra on-chip SRAM for MOVX access

§ On-chip Analog to Digital Converter

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Eight channels of analog input, 10-bit resolution

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Fast conversion time

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Selectable internal or external reference voltage

§ Pulse Width Modulator Outputs

-

Four channels of 8-bit PWM

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Channels cascadable to 16-bit PWM

§ 4 Capture + 3 Compare Registers

§ 55 I/O Port Pins

§ New Dual Data Pointer Operation

-

Either data pointer can be incremented or

decremented

§ ROMSIZE Feature

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Selects effective on-chip ROM size from 0 to 8k

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Allows access to entire external memory map

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Dynamically adjustable by software

§ High-Speed Architecture

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4 clocks/machine cycle (8051 = 12)

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Runs DC to 33 MHz clock rates

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Single-cycle instruction in 121 ns

-

New Stretch Cycle feature allows access to

fast/slow memory or peripherals

§ Unique Power Savings Modes

§ EMI Reduction Mode disables ALE when not

needed

§ High integration controller includes:

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Power-fail reset

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Early-warning power-fail interrupt

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Two full-duplex hardware serial ports

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Programmable watchdog timer

§ 16 total interrupt sources with 6 external

Available in 68-pin PLCC, 80-pin PQFP, and

68-pin windowed CLCC

PIN ASSIGNMENT

DS87C550

EPROM High-Speed

Micro with A/D and PWM

PRODUCT PREVIEW

www.dalsemi.com

9

1

61

27

43

10

26

60

44

68-Pin PLCC

68-Pin WINDOWED CLCC

DALLAS

DS87C550

1

24

64

41

40

25

65

80

DALLAS

DS87C550

80-Pin PQFP

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DS87C550 Datasheet(PDF) 1 Page - Dallas Semiconductor

DS87C550 Datasheet(HTML) 1 Page - Dallas Semiconductor

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