PCA9501D datasheet(13/28 Pages) NXP

부품명	PCA9501D

상세설명	8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

PDF	28 Pages

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제조업체	NXP [NXP Semiconductors]

홈페이지	http://www.nxp.com

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13 / 28 page

PCA9501_4

Product data sheet

Rev. 04 — 10 February 2009

13 of 28

NXP Semiconductors

PCA9501

8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM

Application design-in information

A central processor/controller typically located on the system main board can use the

400 kHz I2C-bus/SMBus to poll the PCA9501 devices located on the system cards for

status or version control type of information. The PCA9501 may be programmed at

manufacturing to store information regarding board build, ﬁrmware version, manufacturer

identiﬁcation, conﬁguration option data, and so on. Alternately, these devices can be used

as convenient interface for board conﬁguration, thereby utilizing the I2C-bus/SMBus as an

intra-system communication bus

Fig 21. PCA9501 used as interface for board conﬁguration

I2C-bus

ASIC

GPIO

CONTROL

EEPROM

monitoring

and

control

configuration control

PCA9501

INPUTS

ALARM

LEDs

I2C-bus

card ID, subroutines, configuration data, or revision history

up to

64 cards

BACKPLANE

I2C-bus

CPU

µC

002aac026

PCA9501D 데이터시트(PDF) 13 Page - NXP Semiconductors