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參數(shù)資料
| 型號(hào)： | PCA9501PW,112 |
| 廠商： | NXP Semiconductors |
| 文件頁(yè)數(shù)： | 28/28頁(yè) |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 20TSSOP |
| 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： | 75 |
| 接口： | I²C，SM 總線 |
| 輸入/輸出數(shù)： | 8 |
| 中斷輸出： | 是 |
| 頻率 - 時(shí)鐘： | 400kHz |
| 電源電壓： | 2.5 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
| 包括： | EEPROM |
| 產(chǎn)品目錄頁(yè)面： | 824 (CN2011-ZH PDF) |
| 配用： | 568-4002-ND - DEMO BOARD I2C |
| 其它名稱： | 568-1026-5 935271535112 PCA9501PW |
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PCA9501_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 10 February 2009
9 of 28
NXP Semiconductors
PCA9501
8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM
7.4.1.2
Page write
A page write is initiated in the same way as the byte write, if after sending the rst word of
data the STOP condition is not received, the PCA9501 considers subsequent words as
data. After each data word the PCA9501 responds with an acknowledge and the four least
signicant bits of the memory address eld are incremented. Should the master not send
a STOP condition after 16 data words, the address counter will return to its initial value
and overwrite the data previously written. After the receipt of the STOP condition the
inputs will behave as with the byte write during the internal write cycle.
7.4.2 Read operations
PCA9501 read operations are initiated in an identical manner to write operations with the
exception that the memory slave address R/W bit is set to ‘1’. There are three types of
read operations: current address read, random read and sequential read.
7.4.2.1
Current address read
The PCA9501 contains an internal address counter that increments after each read or
write access and as a result, if the last word accessed was at address ‘n’ then the address
counter contains the address ‘n + 1’.
When the PCA9501 receives its memory slave address with the R/W bit set to one it
issues an acknowledge and uses the next eight clocks to transmit the data contained at
the address stored in the address counter. The master ceases the transmission by issuing
the STOP condition after the eighth bit. There is no ninth clock cycle for the acknowledge.
Fig 12. Byte write
0
A
S
slave address (memory)
START condition
R/W
acknowledge
from slave
002aad296
word address
SDA
A5 A4 A3 A2 A1 A0
1
P
STOP condition.
Write to the memory
is performed.
A
acknowledge
from slave
data
A
acknowledge
from slave
Fig 13. Page write
0
A
S
slave address (memory)
START condition
R/W
acknowledge
from slave
002aad297
word address
SDA
A5 A4 A3 A2 A1 A0
1
P
STOP condition.
Write to the memory is performed.
A
acknowledge
from slave
data to memory
A
acknowledge
from slave
DATA n
data to memory
A
acknowledge
from slave
DATA n + 3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9501PW,118 | IC I/O EXPANDER I2C 8B 20TSSOP |
| PCA9535PW,112 | IC I/O EXPANDER I2C 16B 24TSSOP |
| PCA9535PW,118 | IC I/O EXPANDER I2C 16B 24TSSOP |
| PCA9535D,112 | IC I/O EXPANDER I2C 16B 24SOIC |
| PCA9500PW,112 | IC I/O EXPANDER I2C 8B 16TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9501PW118 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| PCA9501PW-T | 制造商:NXP Semiconductors 功能描述:I2C and SMBus I/O Port 20-Pin TSSOP T/R 制造商:NXP Semiconductors 功能描述:8-BIT I2C-BUS AND SMBUS I/O PORT WITH INTERRUPT, 2-KBIT EEPROM AND 6 ADDRESS PINS |
| PCA9502 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I/O expander with I2C-bus/SPI interface |
| PCA9502BS | 功能描述:接口-I/O擴(kuò)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 |
| PCA9502BS,128 | 功能描述:接口-I/O擴(kuò)展器 8-BITI/O EXPDR 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 |
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