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参数资料
| 型号： | TMPSNS-RTD1 |
| 厂商： | Microchip Technology |
| 文件页数： | 18/43页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL PT100 RTD TEMP SENSOR |
| 标准包装： | 1 |
| 传感器类型： | 温度 |
| 接口： | USB |
| 嵌入式： | 是，MCU，8 位 |
| 已供物品： | 板，缆线，CD |
| 已用 IC / 零件： | MCP3301，MCP6S26，PIC18F2550 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
| 相关产品： | MCP3301T-BI/SN-ND - IC ADC 13BIT 2.7V 1CH SPI 8-SOIC MCP3301-BI/SN-ND - IC ADC 13BIT 2.7V SPI 8-SOIC MCP3301T-CI/SN-ND - IC ADC 13BIT 2.7V 1CH SPI 8-SOIC MCP3301T-BI/MS-ND - IC ADC 13BIT 2.7V 1CH SPI 8-MSOP MCP3301T-CI/MS-ND - IC ADC 13BIT 2.7V 1CH SPI 8-MSOP MCP3301-BI/P-ND - IC ADC 13BIT 2.7V SPI 8-DIP MCP3301-BI/MS-ND - IC ADC 13BIT 2.7V SPI 8-MSOP MCP3301-CI/SN-ND - IC ADC 13BIT 2.7V 1CH SPI 8SOIC MCP3301-CI/P-ND - IC ADC 13BIT 2.7V 1CH SPI 8-DIP MCP3301-CI/MS-ND - IC ADC 13BIT 2.7V 1CH SPI 8-MSOP |
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MCP6S21/2/6/8
5.0 DIGITAL FUNCTIONS
The MCP6S21/2/6/8 PGAs use a standard SPI com-
patible serial interface to receive instructions from a
controller. This interface is configured to allow daisy
chaining with other SPI devices. There is an internal
POR (Power On Reset) that resets the registers under
low power conditions.
CS is raised after one word (16 bits) to implement the
desired changes. Section 5.3, “Registers”, covers
applications using multiple 16-bit words. SO goes low
after CS goes high; it has a push-pull output that does
not go into a high-Z state.
The MCP6S21/2/6/8 devices operate in SPI Modes 0,0
and 1,1. In 0,0 mode, the clock idles in the low state
5.1
SPI Timing
state (Figure 5-2). In both modes, SI data is loaded into
the PGA on the rising edge of SCK and SO data is
Chip Select (CS) toggles low to initiate communication
with these devices. The first byte of each SI word (two
bytes long) is the instruction byte, which goes into the
Instruction Register. The Instruction Register points the
second byte to its destination. In a typical application,
CS
clocked out on t he falling edge of SCK. In 0,0 mode, the
falling edge of CS also acts as the first falling edge of
SCK (see Figure 5-1). There must be multiples of 16
clocks (SCK) while CS is low or commands will abort
(see Section 5.3, “Registers”).
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SCK
SI
SO
Instruction Byte
(first 16 bits out are always zeros)
Data Byte
FIGURE 5-1:
CS
Serial bus sequence for the PGA; SPI 0,0 mode (see Figure 1-5).
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SCK
SI
SO
Instruction Byte
(first 16 bits out are always zeros)
Data Byte
FIGURE 5-2:
DS21117A-page 18
Serial bus sequence for the PGA; SPI 1,1 mode (see Figure 1-6).
? 2003 Microchip Technology Inc.
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