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參數(shù)資料
| 型號： | PCA9502BS,151 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 3/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C/SPI 24HVQFN |
| 產(chǎn)品培訓(xùn)模塊： | I²C Bus Fundamentals |
| 特色產(chǎn)品： | NXP - I2C Interface |
| 標(biāo)準(zhǔn)包裝： | 490 |
| 接口： | I²C，SPI |
| 輸入/輸出數(shù)： | 8 |
| 中斷輸出： | 無 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 2.3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 24-HVQFN（4x4） |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 824 (CN2011-ZH PDF) |
| 其它名稱： | 568-3635 935281363151 PCA9502BS-S |
PCA9502_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 13 October 2006
11 of 25
NXP Semiconductors
PCA9502
8-bit I/O expander with I2C-bus/SPI interface
9.3 Addressing
Before any data is transmitted or received, the master must send the address of the
receiver via the SDA line. The rst byte after the START condition carries the address of
the slave device and the read/write bit. Table 11 shows how the PCA9502’s address can
be selected by using A1 and A0 pins. For example, if these 2 pins are connected to VDD,
then the PCA9502’s address is set to 0x90, and the master communicates with it through
this address.
[1]
X = logic 0 for write cycle; X = logic 1 for read cycle.
9.4 Use of sub-addresses
When a master communicates with the PCA9502 it must send a sub-address in the byte
following the slave address byte. This sub-address is the internal address of the word the
master wants to access for a single byte transfer, or the beginning of a sequence of
locations for a multi-byte transfer. A sub-address is an 8-bit byte. Unlike the device
address, it does not contain a direction (R/W) bit, and like any byte transferred on the bus
it must be followed by an acknowledge.
A register write cycle is shown in Figure 10. The START is followed by a slave address
byte with the direction bit set to ‘write’, a sub-address byte, a number of data bytes, and a
STOP signal. The sub-address indicates which register the master wants to access. and
the data bytes which follow will be written one after the other to the sub-address location.
Table 11.
PCA9502 address map
A1
A0
VDD
0x90 (1001 000X)
VDD
VSS
0x92 (1001 001X)
VDD
SCL
0x94 (1001 010X)
VDD
SDA
0x96 (1001 011X)
VSS
VDD
0x98 (1001 100X)
VSS
0x9A (1001 101X)
VSS
SCL
0x9C (1001 110X)
VSS
SDA
0x9E (1001 111X)
SCL
VDD
0xA0 (1010 000X)
SCL
VSS
0xA2 (1010 001X)
SCL
0xA4 (1010 010X)
SCL
SDA
0xA6 (1010 011X)
SDA
VDD
0xA8 (1010 100X)
SDA
VSS
0xAA (1010 101X)
SDA
SCL
0xAC (1010 110X)
SDA
0xAE (1010 111X)
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| PCA9502BS-F | 功能描述:接口-I/O擴展器 8-BITI/O EXPDR W/I2C-SPI INTRF RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9503A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart, simple solutions for the 12 most common design concerns |
| PCA9504A | 功能描述:接口 - 專用 GLUE CHIP 4 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| PCA9504ADGG | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Glue chip 4 |
| PCA9504ADGG,112 | 功能描述:接口 - 專用 GLUE CHIP 4 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
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