參數(shù)資料
      型號: MCP23S17-E/ML
      元件分類: 微控制器/微處理器
      英文描述: 16 I/O, PIA-GENERAL PURPOSE, PQCC28
      封裝: 6 X 6 MM, PLASTIC, QFN-28
      文件頁數(shù): 2/48頁
      文件大?。?/td> 915K
      代理商: MCP23S17-E/ML
      MCP23017/MCP23S17
      DS21952B-page 10
      2007 Microchip Technology Inc.
      1.6
      Configuration and Control
      Registers
      There are 21 registers associated with the MCP23X17,
      as shown in Table 1-5 and Table 1-6. The two tables
      show the register mapping with the two BANK bit
      values. Ten registers are associated with PortA and ten
      are associated with PortB. One register (IOCON) is
      shared between the two ports. The PortA registers are
      identical to the PortB registers, therefore, they will be
      referred to without differentiating between the port
      designation (i.e., they will not have the “A” or “B”
      designator assigned) in the register tables.
      TABLE 1-5:
      CONTROL REGISTER SUMMARY (IOCON.BANK = 1)
      Register
      Name
      Address
      (hex)
      bit 7
      bit 6
      bit 5
      bit 4
      bit 3
      bit 2
      bit 1
      bit 0
      POR/RST
      value
      IODIRA
      00
      IO7
      IO6
      IO5
      IO4
      IO3
      IO2
      IO1
      IO0
      1111 1111
      IPOLA
      01
      IP7
      IP6
      IP5
      IP4
      IP3
      IP2
      IP1
      IP0
      0000 0000
      GPINTENA
      02
      GPINT7
      GPINT6
      GPINT5
      GPINT4
      GPINT3
      GPINT2
      GPINT1
      GPINT0 0000 0000
      DEFVALA
      03
      DEF7
      DEF6
      DEF5
      DEF4
      DEF3
      DEF2
      DEF1
      DEF0
      0000 0000
      INTCONA
      04
      IOC7
      IOC6
      IOC5
      IOC4
      IOC3
      IOC2
      IOC1
      IOC0
      0000 0000
      IOCON
      05
      BANK
      MIRROR
      SEQOP
      DISSLW
      HAEN
      ODR
      INTPOL
      0000 0000
      GPPUA
      06
      PU7
      PU6
      PU5
      PU4
      PU3
      PU2
      PU1
      PU0
      0000 0000
      INTFA
      07
      INT7
      INT6
      INT5
      INT4
      INT3
      INT2
      INT1
      INTO
      0000 0000
      INTCAPA
      08
      ICP7
      ICP6
      ICP5
      ICP4
      ICP3
      ICP2
      ICP1
      ICP0
      0000 0000
      GPIOA
      09
      GP7
      GP6
      GP5
      GP4
      GP3
      GP2
      GP1
      GP0
      0000 0000
      OLATA
      0A
      OL7
      OL6
      OL5
      OL4
      OL3
      OL2
      OL1
      OL0
      0000 0000
      IODIRB
      10
      IO7
      IO6
      IO5
      IO4
      IO3
      IO2
      IO1
      IO0
      1111 1111
      IPOLB
      11
      IP7
      IP6
      IP5
      IP4
      IP3
      IP2
      IP1
      IP0
      0000 0000
      GPINTENB
      12
      GPINT7
      GPINT6
      GPINT5
      GPINT4
      GPINT3
      GPINT2
      GPINT1
      GPINT0 0000 0000
      DEFVALB
      13
      DEF7
      DEF6
      DEF5
      DEF4
      DEF3
      DEF2
      DEF1
      DEF0
      0000 0000
      INTCONB
      14
      IOC7
      IOC6
      IOC5
      IOC4
      IOC3
      IOC2
      IOC1
      IOC0
      0000 0000
      IOCON
      15
      BANK
      MIRROR
      SEQOP
      DISSLW
      HAEN
      ODR
      INTPOL
      0000 0000
      GPPUB
      16
      PU7
      PU6
      PU5
      PU4
      PU3
      PU2
      PU1
      PU0
      0000 0000
      INTFB
      17
      INT7
      INT6
      INT5
      INT4
      INT3
      INT2
      INT1
      INTO
      0000 0000
      INTCAPB
      18
      ICP7
      ICP6
      ICP5
      ICP4
      ICP3
      ICP2
      ICP1
      ICP0
      0000 0000
      GPIOB
      19
      GP7
      GP6
      GP5
      GP4
      GP3
      GP2
      GP1
      GP0
      0000 0000
      OLATB
      1A
      OL7
      OL6
      OL5
      OL4
      OL3
      OL2
      OL1
      OL0
      0000 0000
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