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    參數(shù)資料
    型號(hào): PCA9674APW,112
    廠商: NXP Semiconductors
    文件頁(yè)數(shù): 38/40頁(yè)
    文件大小: 0K
    描述: IC I/O EXPANDER I2C 8B 16TSSOP
    標(biāo)準(zhǔn)包裝: 96
    接口: I²C
    輸入/輸出數(shù): 8
    中斷輸出:
    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: 管件
    包括: POR
    其它名稱: 935282743112
    PCA9674APW
    PCA9674APW-ND
    PCA9674_PCA9674A
    All information provided in this document is subject to legal disclaimers.
    NXP B.V. 2013. All rights reserved.
    Product data sheet
    Rev. 7 — 30 May 2013
    7 of 40
    NXP Semiconductors
    PCA9674; PCA9674A
    Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
    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
    PCF8574A or the newer PCA8574 or PCA8574A is applied.
    7.1.1 Address maps
    The PCA9674 and PCA9674A are functionally the same, but have non-overlapping
    address ranges. This allows 64 of the PCA9674 devices and 62 of the PCA9674A devices
    to be on the same I2C-bus without address conflict.
    Fig 6.
    PCA9674; PCA9674A address
    R/W
    002aab636
    A6
    A5
    A4
    A3
    A2
    A1
    A0
    programmable
    slave address
    Table 4.
    PCA9674 address map
    Pin connectivity
    Address of PCA9674
    Address byte value
    7-bit
    hexadecimal
    address
    without R/W
    AD2
    AD1
    AD0
    A6 A5 A4 A3 A2 A1 A0 R/W
    Write
    Read
    VSS
    SCL
    VSS
    0010000
    -
    20h
    21h
    10h
    VSS
    SCL
    VDD
    0010001
    -
    22h
    23h
    11h
    VSS
    SDA
    VSS
    0010010
    -
    24h
    25h
    12h
    VSS
    SDA
    VDD
    0010011
    -
    26h
    27h
    13h
    VDD
    SCL
    VSS
    0010100
    -
    28h
    29h
    14h
    VDD
    SCL
    VDD
    0010101
    -
    2Ah
    2Bh
    15h
    VDD
    SDA
    VSS
    0010110
    -
    2Ch
    2Dh
    16h
    VDD
    SDA
    VDD
    0010111
    -
    2Eh
    2Fh
    17h
    VSS
    SCL
    0011000
    -
    30h
    31h
    18h
    VSS
    SCL
    SDA
    0011001
    -
    32h
    33h
    19h
    VSS
    SDA
    SCL
    0011010
    -
    34h
    35h
    1Ah
    VSS
    SDA
    0011011
    -
    36h
    37h
    1Bh
    VDD
    SCL
    0011100
    -
    38h
    39h
    1Ch
    VDD
    SCL
    SDA
    0011101
    -
    3Ah
    3Bh
    1Dh
    VDD
    SDA
    SCL
    0011110
    -
    3Ch
    3Dh
    1Eh
    VDD
    SDA
    0011111
    -
    3Eh
    3Fh
    1Fh
    VSS
    0100000
    -
    40h
    41h
    20h
    VSS
    VDD
    0100001
    -
    42h
    43h
    21h
    VSS
    VDD
    VSS
    0100010
    -
    44h
    45h
    22h
    VSS
    VDD
    0100011
    -
    46h
    47h
    23h
    VDD
    VSS
    0100100
    -
    48h
    49h
    24h
    VDD
    VSS
    VDD
    0100101
    -
    4Ah
    4Bh
    25h
    VDD
    VSS
    0100110
    -
    4Ch
    4Dh
    26h
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