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参数资料
| 型号： | MAX7301ATL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/17页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER SPI 28B 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接口： | SPI/QSPI?/MICROWIRE? |
| 输入/输出数： | 28 |
| 中断输出： | 是 |
| 频率 - 时钟： | 26MHz |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 带卷 (TR) |
The MAX7301 is written to using the following
sequence:
1) Take SCLK low.
2) Take
CS low. This enables the internal 16-bit shift
register.
3) Clock 16 bits of data into DIN—D15 first, D0 last—
observing the setup and hold times (bit D15 is low,
indicating a write command).
4) Take
CS high (either while SCLK is still high after
clocking in the last data bit, or after taking SCLK
low).
5) Take SCLK low (if not already low).
Figure 4 shows a write operation when 16 bits are
transmitted.
It is acceptable to clock more than 16 bits into the
MAX7301 between taking
CS low and taking CS high
again. In this case, only the last 16 bits clocked into the
MAX7301 are retained.
Reading Device Registers
Any register data within the MAX7301 may be read by
sending a logic high to bit D15. The sequence is:
1) Take SCLK low.
2) Take
CS low (this enables the internal 16-bit Shift
register).
3) Clock 16 bits of data into DIN—D15 first to D0 last.
D15 is high, indicating a read command and bits
D14 through D8 containing the address of the regis-
ter to be read. Bits D7–D0 contain dummy data,
which is discarded.
4) Take
CS high (either while SCLK is still high after
clocking in the last data bit, or after taking SCLK
low), positions D7 through D0 in the Shift register
are now loaded with the register data addressed by
bits D1 through D8.
5) Take SCLK low (if not already low).
6) Issue another read or write command (which can
be a No-Op), and examine the bit stream at DOUT;
the second 8 bits are the contents of the register
addressed by bits D1 through D8 in step 3.
MAX7301
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port I/O Expander
_______________________________________________________________________________________
7
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
R/W
8
CE
DATA
8
PORT REGISTERS
GPIO
CONFIGURATION
P4 TO P31
GPIO DATA
R/W
CONFIGURATION
REGISTERS
PORT CHANGE
DETECTOR
MASK REGISTER
COMMAND
REGISTER DECODE
8
DATA BYTE
COMMAND BYTE
CS
DIN
SCLK
DOUT
8
Figure 1. MAX7301 Functional Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7301EGL | 制造商:Maxim Integrated Products 功能描述: |
| MAX7302 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SMBus/I2C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA |
| MAX7302_0712 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SMBus/I2C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA |
| MAX7302AEE | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SMBus/I2C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA |
| MAX7302AEE+ | 功能描述:外围驱动器与原件 - PCI 9-Port Level-Trans GPIO & LED Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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