參數(shù)資料
型號(hào)： PCA9506DGG,512
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 33/34頁(yè)
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 40B 56TSSOP
產(chǎn)品培訓(xùn)模塊： I²C Bus Fundamentals
特色產(chǎn)品： NXP - I2C Interface
標(biāo)準(zhǔn)包裝： 35
接口： I²C
輸入/輸出數(shù)： 40
中斷輸出： 是
頻率 - 時(shí)鐘： 400kHz
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： 56-TFSOP（0.240"，6.10mm 寬）
供應(yīng)商設(shè)備封裝： 56-TSSOP
包裝： 管件
包括： POR
產(chǎn)品目錄頁(yè)面： 824 (CN2011-ZH PDF)
其它名稱： 568-3354-5
935280798512
PCA9506DGG
PCA9505_9506
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 4 — 3 August 2010
8 of 34
NXP Semiconductors
PCA9505/06
40-bit I2C-bus I/O port with RESET, OE and INT
The lowest 6 bits are used as a pointer to determine which register will be accessed. The
registers are:
IP: Input Port registers (5 registers)
OP: Output Port registers (5 registers)
PI: Polarity Inversion registers (5 registers)
IOC: I/O Configuration registers (5 registers)
MSK: Mask interrupt registers (5 registers)
If the Auto-Increment flag is set (AI = 1), the 3 least significant bits are automatically
incremented after a read or write. This allows the user to program and/or read the
5 register banks sequentially.
If more than 5 bytes of data are written and AI = 1, previous data in the selected registers
will be overwritten. Reserved registers are skipped and not accessed (refer to Table 3).
If the Auto-Increment flag is cleared (AI = 0), the 3 least significant bits are not
incremented after data is read or written. During a read operation, the same register bank
is read each time. During a write operation, data is written to the same register bank each
time.
Only a Command register code with the 5 least significant bits equal to the 25 allowable
values as defined in Table 3 are valid. Reserved or undefined command codes must not
be accessed for proper device functionality. At power-up, this register defaults to 0x80,
with the AI bit set to logic 1, and the lowest 7 bits set to logic 0.
During a write operation, the PCA9505/06 will acknowledge a byte sent to OPx, PIx, and
IOCx and MSKx registers, but will not acknowledge a byte sent to the IPx registers since
these are read-only registers.
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