參數(shù)資料
型號： PCA9675DB
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
中文描述： 18 I/O, PIA-GENERAL PURPOSE, PDSO24
封裝： 5.30 MM, PLASTIC, MO-150, SOT340-1, SSOP-24
文件頁數(shù)： 6/34頁
文件大?。?/td> 185K
代理商： PCA9675DB
PCA9675_1
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 01 — 1 February 2007
6 of 34
NXP Semiconductors
PCA9675
Remote 16-bit I/O expander for Fm+ I
2
C-bus with interrupt
[1]
HVQFN and DHVQFN package die supply ground is connected to both the V
SS
pin and the exposed center
pad. The V
SS
pin must be connected to supply ground for proper device operation. For enhanced thermal,
electrical, and board-level performance, the exposed pad needs to be soldered to the board using a
corresponding thermal pad on the board, and for proper heat conduction through the board thermal vias
need to be incorporated in the PCB in the thermal pad region.
7.
Functional description
Refer to
Figure 1 “Block diagram of PCA9675”
.
7.1 Device address
Following a START condition, the bus master must send the address of the slave it is
accessing and the operation it wants to perform (read or write). The address of the
PCA9675 is shown in
Figure 9
. Slave address pins AD2, AD1, and AD0 choose 1 of
64 slave addresses. To conserve power, no internal pull-up resistors are incorporated on
AD2, AD1, and AD0. Address values depending on AD2, AD1, and AD0 can be found in
Table 3 “PCA9675 address map”
.
Remark:
The General Call address (0000 0000b) and the Device ID address
(1111 100Xb) are reserved and cannot be used as device address. Failure to follow this
requirement will cause the PCA9675 not to acknowledge.
Remark:
Reserved I
2
C-bus addresses must be used with caution since they can interfere
with:
“reserved for future use” I
2
C-bus addresses (0000 011, 1111 101, 1111 110,
1111 111)
slave devices that use the 10-bit addressing scheme (1111 0xx)
High speed mode (Hs-mode) master code (0000 1xx)
The last bit of the first byte defines the operation to be performed. When set to logic 1 a
read is selected, while a logic 0 selects a write operation.
When AD2, AD1 and AD0 are held to V
DD
or V
SS
, the same address as the PCF8575 is
applied.
SCL
SDA
V
DD
22
23
24
19
20
21
serial clock line input
serial data line input/output
supply voltage
Table 2.
Symbol
Pin description
…continued
Pin
SO, SSOP, TSSOP,
DHVQFN
Description
HVQFN
Fig 9.
PCA9675 address
R/W
002aab636
A6
A5
A4
A3
A2
A1
A0
programmable
slave address
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9675DB,112 功能描述:接口-I/O擴展器 16-BIT I2C FM+ QB 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
PCA9675DB,118 功能描述:接口-I/O擴展器 16-BIT I2C FM+ QB 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
PCA9675DB-T 功能描述:接口-I/O擴展器 16-BIT I2C FM+ QB GPIO RST PU 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
PCA9675DK,118 功能描述:接口-I/O擴展器 16-BIT I2C FM+ QB 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
PCA9675DK-T 功能描述:接口-I/O擴展器 16-BIT I2C FM+ QB GPIO RST PU 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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