參數(shù)資料
型號(hào): MCP23S18T-E/SO
廠商: Microchip Technology
文件頁(yè)數(shù): 14/56頁(yè)
文件大?。?/td> 0K
描述: IC I/O EXPANDER SPI 16B 28SOIC
標(biāo)準(zhǔn)包裝: 1,600
接口: SPI
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時(shí)鐘: 10MHz
電源電壓: 1.8 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 28-SOIC
包裝: 帶卷 (TR)
2008 Microchip Technology Inc.
DS22103A-page 21
MCP23018/MCP23S18
1.6.4
DEFAULT COMPARE REGISTER
FOR INTERRUPT-ON-CHANGE
The default comparison value is configured in the
DEFVAL register. If enabled (via GPINTEN and INT-
CON) to compare against the DEFVAL register, an
opposite value on the associated pin will cause an
interrupt to occur.
REGISTER 1-6:
DEFVAL – DEFAULT VALUE REGISTER
R/W-0
DEF7
DEF6
DEF5
DEF4
DEF3
DEF2
DEF1
DEF0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
DEF7:DEF0: Sets the compare value for pins configured for interrupt-on-change from defaults <7:0>.
Refer to INTCON.
If the associated pin level is the opposite from the register bit, an interrupt occurs.
Refer to INTCON and GPINTEN.
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