參數(shù)資料
型號(hào): PCA9501
廠商: NXP Semiconductors N.V.
英文描述: 8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins
中文描述: 8位I2C和SMBus I / O口的中斷,2千比特的EEPROM和6個(gè)地址引腳
文件頁(yè)數(shù): 13/22頁(yè)
文件大?。?/td> 146K
代理商: PCA9501
Philips Semiconductors
8-bit I
2
C and SMBus I/O port with interrupt,
2-kbit EEPROM and 6 address pins
Product data
PCA9501
2003 Sep 12
13
TYPICAL APPLICATION
Applications
Board version tracking and configuration
Board health monitoring and status reporting
Multi-card systems in Telecom, Networking, and Base Station
Infrastructure Equipment
Field recall and troubleshooting functions for installed boards
General-purpose integrated I/O with memory
Replacement for PCF8574 with integrated 2-kbit EEPROM
Bus master sees GPIO and EEPROM as two separate devices
Six hardware address pins allow up to 64 PCA9501s to be located
in the same I
2
C/SMBus
CONTROL
EEPROM
GPIO
I
2
C
I
2
C
I
2
C
I
2
C
ASIC
B
CPU
OR
μ
C
I
2
C
MONITORING
AND
CONTROL
INPUTS
ALARM
LEDs
PCA9501
CARD ID, SUBROUTINES, CONFIGURATION DATA, OR REVISION HISTORY
SW02007
UP TO 64 CARDS
CONFIGURATION CONTROL
I
2
C
Figure 20. Typical application
A central processor/controller typically located on the system main
board can use the 400 kHz I
2
C/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
Alternately,
these devices can be used as convenient interface for board
configuration, thereby utilizing the I
2
C/SMBus as an intra-system
communication bus.
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