8-bit I<" />
參數(shù)資料
型號(hào)： PCA9500PW,118
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 25/26頁(yè)
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 8B 16TSSOP
標(biāo)準(zhǔn)包裝： 2,500
接口： I²C，SM 總線
輸入/輸出數(shù)： 8
中斷輸出： 無
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： 16-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 16-TSSOP
包裝： 帶卷 (TR)
包括： EEPROM，POR
其它名稱： 935271534118
PCA9500PW-T
PCA9500PW-T-ND
PCA9500_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 15 April 2009
8 of 26
NXP Semiconductors
PCA9500
8-bit I2C-bus and SMBus I/O port with 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 PCA9500 considers subsequent words as
data. After each data word the PCA9500 responds with an acknowledge and the two least
signicant bits of the memory address eld are incremented. Should the master not send
a STOP condition after four 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
PCA9500 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 PCA9500 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 PCA9500 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 10. Byte write
0
A
S
slave address (memory)
START condition
R/W
acknowledge
from slave
002aae594
word address
SDA
0
1
0
A2 A1 A0
1
P
STOP condition.
Write to the memory
is performed.
A
acknowledge
from slave
data
A
acknowledge
from slave
Fig 11. Page write
0
A
S
slave address (memory)
START condition
R/W
acknowledge
from slave
002aae595
word address
SDA
0
1
0
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
PCA9674D,518 IC I/O EXPANDER I2C 8B 16SOIC
PCA9674AD,518 IC I/O EXPANDER I2C 8B 16SOIC
PCA9674TS,112 IC I/O EXPANDER I2C 8B 20SSOP
PCA9674D,512 IC I/O EXPANDER I2C 8B 16SOIC
ATMEGA48-15AT MCU AVR 4K FLASH 15MHZ 32-TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9501 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins
PCA9501A 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
PCA9501BS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins
PCA9501BS,118 功能描述:接口-I/O擴(kuò)展器 8BIT I2C FMQB GPIONT 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
PCA9501BS,118-CUT TAPE 制造商:NXP 功能描述:8-bit 8 I/O I2C-bus Expander On Board 2 kb EEPROM Surface Mount - HVQFN-20
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*