參數(shù)資料
型號(hào)： PCA9670PW,118
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 31/35頁(yè)
文件大小： 0K
描述： IC I/O EXPANDER I2C 8B 16TSSOP
標(biāo)準(zhǔn)包裝： 2,500
接口： I²C
輸入/輸出數(shù)： 8
中斷輸出： 無(wú)
頻率 - 時(shí)鐘： 1MHz
電源電壓： 2.3 V ~ 5.5 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： POR
其它名稱： 935282716118
PCA9670PW-T
PCA9670PW-T-ND
PCA9670
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 30 May 2013
5 of 35
NXP Semiconductors
PCA9670
Remote 8-bit I/O expander for Fm+ I2C-bus with reset
[1]
HVQFN16 package die supply ground is connected to both the VSS pin and the exposed center pad. The
VSS 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
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 format of the
PCA9670 is shown in Figure 6. Slave address pins AD2, AD1, and AD0 are used to
choose one of 64 slave addresses. These devices can monitor the change in SDA or SCL
in addition to the static levels of VDD or VSS to decode four states allowing a larger
address range. To conserve power, no internal pull-up resistors are incorporated on AD2,
AD1, or AD0 so they must be externally connected to VDD, VSS directly or through
resistors, or to SCL or SDA directly. Address values depending on AD2, AD1, and AD0
Remark: When using the PCA9670, reserved I2C-bus addresses must be used with
caution since they can interfere with:
“reserved for future use” I2C-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 VDD or VSS, the same address as the PCF8574 or
newer PCA8574 is applied.
P7
12
10
quasi-bidirectional I/O 7
RESET
13
11
reset input (active LOW)
SCL
14
12
serial clock line
SDA
15
13
serial data line
VDD
16
14
supply voltage
Table 3.
Pin description …continued
Symbol
Pin
Description
SO16, TSSOP16
HVQFN16
Fig 6.
PCA9670 address
R/W
002aab636
A6
A5
A4
A3
A2
A1
A0
programmable
slave address
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PCA9670PW-T 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM+ QB GPIO INT 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
PCA9671BQ,118 功能描述:接口-I/O擴(kuò)展器 REMOTE 16BIT GPIO 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
PCA9671BQ-T 功能描述:接口-I/O擴(kuò)展器 REMOTE 16BIT GPIO FM+I2C-RESET 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
PCA9671BS,118 功能描述:接口-I/O擴(kuò)展器 REMOTE 16BIT GPIO 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
PCA9671BS-T 功能描述:接口-I/O擴(kuò)展器 REMOTE 16BIT GPIO FM+I2C-RESET 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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