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参数资料
| 型号： | MAX7317ATE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER SPI 10B 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 接口： | SPI/Microwire |
| 输入/输出数： | 10 |
| 中断输出： | 无 |
| 电源电压： | 2.25 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（3x3） |
| 包装： | 管件 |
Alternatively, MAX7317s can be daisy-chained by con-
necting the DOUT of one device to the DIN of the next,
and driving SCLK and CS lines in parallel (Figure 3).
This connection allows the MAX7317s to be read. Data
at DIN propagates through the internal shift registers
and appears at DOUT 15.5 clock cycles later, clocked
out on the falling edge of SCLK. When sending com-
mands to daisy-chained MAX7317s, all devices are
accessed at the same time. An access requires (16 x n)
clock cycles, where n is the number of MAX7317s con-
nected together. The serial interface speed (maximum
SCLK) is limited to 10MHz when multiple devices are
daisy-chained due to the DOUT propagation delay and
DIN setup time.
The MAX7317 is written to using the following
sequence (Figure 5):
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,
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).
If fewer or greater than 16 bits are clocked into the
MAX7317 between taking CS low and taking CS high
again, the MAX7317 stores the last 16 bits received,
including the previous transmission(s). The general
case is when n bits (where n > 16) are transmitted to
the MAX7317. The last bits comprising bits {n-15} to
{n}, are retained, and are parallel loaded into the 16-bit
latch as bits D15 to D0, respectively (Figure 6).
Reading Device Registers
Any register data within the MAX7317 can 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 contain the address of the register
to read. Bits D7 to 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
D15 through D8.
5) Take SCLK low (if not already low).
6) Issue another read or write command, and examine
the bit stream at DOUT; the second 8 bits are the
contents of the register addressed by bits D14
through D8 in step 3.
10-Port SPI-Interfaced I/O Expander with
Overvoltage and Hot-Insertion Protection
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
R/ W
MSB
ADDRESS
LSB
MSB
DATA
LSB
Table 5. Serial-Data Format
Figure 2. MAX7317 Multiple CS Connection
DIN
SCLK
CS3
DIN
SCLK
CS2
DIN
SCLK
MOSI
SCLK
CS1
CS3
CS2
CS1
MAX7317
C
8
Maxim Integrated
MAX7317
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7317ATE+ | 功能描述:接口-I/O扩展器 10-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7317ATE+GH7 | 功能描述:接口-I/O扩展器 10-Port I/O Expander with Overvoltage and Hot-Insertion Protection RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7317ATE+T | 功能描述:接口-I/O扩展器 10-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7317ATE+TGH7 | 功能描述:接口-I/O扩展器 10-Port I/O Expander with Overvoltage and Hot-Insertion Protection RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7317ATE-T | 功能描述:接口-I/O扩展器 10-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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