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參數資料
| 型號： | MCP3551DM-PCTL |
| 廠商： | Microchip Technology |
| 文件頁數： | 18/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DEMO FOR MCP3551 |
| 產品培訓模塊： | MCP3901 Analog Front End |
| 標準包裝： | 1 |
| 系列： | PICtail™ |
| ADC 的數量： | 1 |
| 位數： | 22 |
| 采樣率（每秒）： | 14 |
| 數據接口： | 串行 |
| 輸入范圍： | ±VREF |
| 工作溫度： | -40°C ~ 125°C |
| 已用 IC / 零件： | MCP3551 |
| 已供物品： | 板，CD |
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2009 Microchip Technology Inc.
DS21950E-page 25
MCP3550/1/3
5.5
Using The MCP3550/1/3 with
Microcontroller (MCU) SPI Ports
It is required that the microcontroller SPI port be
configured to clock out data on the falling edge of clock
and latch data in on the rising edge. Figure 5-6 depicts
the operation shown in SPI mode 1,1, which requires
that the SCK from the MCU idles in the High state,
while Figure 5-7 shows the similar case of SPI Mode
0,0, where the clock idles in the Low state. The
waveforms in the figures are examples of an MCU
operating the SPI port in 8-bit mode, and the
MCP3550/1/3 devices do not require data in 8-bit
groups.
In SPI mode 1,1, data is read using only 24 clocks or
three byte transfers. The data ready bit must be read
by testing the SDO/RDY line prior to a falling edge of
the clock.
In SPI mode 0,0, data is read using 25 clocks or four
byte transfers. Please note that the data ready bit is
included in the transfer as the first bit in this mode.
FIGURE 5-6:
SPI Communication – Mode 1,1.
FIGURE 5-7:
SPI Communication – Mode 0,0.
CS
SCK
SDO/RDY
MCU
Data stored into MCU
receive
register
after
transmission of first byte
Receive
Buffer
Data
stored
into
MCU
receive
register
after
transmission of second byte
Data stored into MCU
receive
register
after
transmission of third byte
DO O 21 20 19 18 17
16
15 14 13 12 11 10 9
8
76 5 4 3 2 1
0
OL OH 21 20 19 18 17 16
15 14 13 12 11 10 9
8
76
5
4
3 2
1
0
RH L
CS
SCK
SDO/RDY
MCU
Data stored into MCU
receive
register
after
transmission of first byte
Receive
Buffer
Data
stored
into
MCU
receive
register
after
transmission of second byte
Data stored into MCU
receive
register
after
transmission of third byte
Data stored into MCU
receive
register
after
transmission of fourth byte
DR OO 21 20 19 18 17
16
14 13 12 11 10 9
65 4 3 2
0
OH OL 21 20 19 18 17
15 14 13 12 11 10 9
76
5
4
3 2
1
0
DR
8
16
15
7
8
1
HL
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| MCP3551-E/MS | 功能描述:模數轉換器 - ADC 22-bit ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3551-E/SN | 功能描述:模數轉換器 - ADC 22-bit ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3551-ESN | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs |
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