参数资料
| 型号： | XRA1405IL24-F |
| 厂商： | Exar Corporation |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER SPI 16B 24QFN |
| 标准包装： | 490 |
| 接口： | SPI |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 26MHz |
| 电源电压： | 1.65 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN（4x4） |
| 包装： | 托盘 |
| 其它名称： | 1016-1728 |
XRA1405
5
REV. 1.0.0
16-BIT SPI GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS
1.1.1
SPI Command Byte
An SPI command byte is sent by the SPI master following the slave address. The command byte indicates the
address offset of the register that will be accessed. Table 2 below lists the command bytes for each register.
TABLE 2: COMMAND BYTE (REGISTER ADDRESS)
COMMAND BYTE
REGISTER NAME DESCRIPTION
READ/WRITE
DEFAULT VALUES
0x00
GSR1 - GPIO State for P0-P7
Read-Only
0xXX
0x01
GSR2 - GPIO State for P8-P15
Read-Only
0xXX
0x02
OCR1 - Output Control for P0-P7
Read/Write
0xFF
0x03
OCR2 - Output Control for P8-P15
Read/Write
0xFF
0x04
PIR1 - Input Polarity Inversion for P0-P7
Read/Write
0x00
0x05
PIR2 - Input Polarity Inversion for P8-P15
Read/Write
0x00
0x06
GCR1 - GPIO Configuration for P0-P7
Read/Write
0xFF
0x07
GCR2 - GPIO Configuration for P8-P15
Read/Write
0xFF
0x08
PUR1 - Input Internal Pull-up Resistor Enable/Disable for P0-P7
Read/Write
0x00
0x09
PUR2 - Input Internal Pull-up Resistor Enable/Disable for P8-P15
Read/Write
0x00
0x0A
IER1 - Input Interrupt Enable for P0-P7
Read/Write
0x00
0x0B
IER2 - Input Interrupt Enable for P8-P15
Read/Write
0x00
0x0C
TSCR1 - Output Three-State Control for P0-P7
Read/Write
0x00
0x0D
TSCR2 - Output Three-State Control for P8-P15
Read/Write
0x00
0x0E
ISR1 - Input Interrupt Status for P0-P7
Read
0x00
0x0F
ISR2 - Input Interrupt Status for P8-P15
Read
0x00
0x10
REIR1 - Input Rising Edge Interrupt Enable for P0-P7
Read/Write
0x00
0x11
REIR2 - Input Rising Edge Interrupt Enable for P8-P15
Read/Write
0x00
0x12
FEIR1 - Input Falling Edge Interrupt Enable for P0-P7
Read/Write
0x00
0x13
FEIR2 - Input Falling Edge Interrupt Enable for P8-P15
Read/Write
0x00
0x14
IFR1 - Input Filter Enable/Disable for P0-P7
Read/Write
0xFF
0x15
IFR2 - Input Filter Enable/Disable for P8-P15
Read/Write
0xFF
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