參數(shù)資料
型號(hào)： MCP6S28
廠商： Microchip Technology Inc.
元件分類(lèi)： FPGA
英文描述： 400000 SYSTEM GATE 2.5 VOLT FPGA - NOT RECOMMENDED for NEW DESIGN
中文描述： 單端，軌至軌I / O，低增益美國(guó)PGA
文件頁(yè)數(shù)： 18/43頁(yè)
文件大小： 880K
代理商： MCP6S28
MCP6S21/2/6/8
DS21117A-page 18
2003 Microchip Technology Inc.
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.
5.1
SPI Timing
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 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
(Figure 5-1) and, in 1,1 mode, the clock idles in the high
state (Figure 5-2). In both modes, SI data is loaded into
the PGA on the rising edge of SCK and SO data is
clocked out on the 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”).
FIGURE 5-1:
Serial bus sequence for the PGA; SPI 0,0 mode (see Figure 1-5).
FIGURE 5-2:
Serial bus sequence for the PGA; SPI 1,1 mode (see Figure 1-6).
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
b
CS
SCK
SI
Instruction Byte
Data Byte
b
b
b
SO
(first 16 bits out are always zeros)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
b
CS
SCK
SI
Instruction Byte
Data Byte
b
b
b
SO
(first 16 bits out are always zeros)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MCP6S28-I/SL 功能描述:特殊用途放大器 8-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
MCP6S28-I/SL 制造商:Microchip Technology Inc 功能描述:Operational Amplifier (Op-Amp) IC
MCP6S28T-I/SL 功能描述:特殊用途放大器 8-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
MCP6S2XEV 功能描述:放大器 IC 開(kāi)發(fā)工具 MCP6S2X PGA Eval Brd RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類(lèi)型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
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