DS89C450 datasheet(11/46 Pages) DALLAS

Part #	DS89C450

Description	Ultra-High-Speed Flash Microcontrollers

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Manufacturer	DALLAS [Dallas Semiconductor]

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

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DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers

11 of 46

POWER-CYCLE TIMING CHARACTERISTICS

(VCC = 4.5V to 5.5V, TO = -40°C to +85°C.)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Crystal Startup Time (Note 18)

tCSU

8

ms

Power-On Reset Delay (Note 19)

tPOR

65,536

tCLCL

Note 18: Startup time for a crystal varies with load capacitance and manufacturer. The time shown is for an 11.0592MHz crystal manufactured

by Fox Electronics.

Note 19: Reset delay is a synchronous counter of crystal oscillations after crystal startup. Counting begins when the level on the XTAL1 pin

meets the VIH2 criteria. At 33MHz, this time is 1.99ms.

FLASH MEMORY PROGRAMMING CHARACTERISTICS

(VCC = 4.5V to 5.5V)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Data Retention

tDR

100

years

Write/Erase Endurance

tENDURE

10,000

cycles

Program/Time

tPROG

40

s

Erase Time

tERASE

4

ms

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DS89C450 Datasheet(PDF) 11 Page - Dallas Semiconductor

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