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參數(shù)資料
| 型號(hào)： | MCP4725A0T-E/CH |
| 元件分類： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 6 us SETTLING TIME, 12-BIT DAC, PDSO6 |
| 封裝： | PLASTIC, SOT-23, 6 PIN |
| 文件頁(yè)數(shù)： | 14/50頁(yè) |
| 文件大小： | 1494K |
| 代理商： | MCP4725A0T-E/CH |
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2009 Microchip Technology Inc.
DS22039D-page 21
MCP4725
5.6
Non-Volatile EEPROM Memory
The MCP4725 device has a 14-bit wide EEPROM
memory to store configuration bit (2 bits) and DAC
input data (12 bits). These bits are readable and re-
writable with I2C interface commands. The device has
an on-chip charge pump circuit to write the EEPROM
memory bits without using an external program
voltage.
The EEPROM writing operation is initiated when the
device receives an EEPROM write command (C2 = 0,
C1 = 1, C0 = 1). The configuration and writing data bits
are transferred to the EEPROM memory block. A
status bit, RDY/BSY, stays low during the EEPROM
writing and goes high as the write operation is
completed. While the RDY/BSY bit is low (during the
EEPROM writing), any new write command is ignored
(for EEPROM or DAC register). Table 5-3 shows the
EEPROM bits and factory default settings. Table 5-4
shows the DAC input register bits of the MCP4725.
TABLE 5-4:
DAC REGISTER
TABLE 5-3:
EEPROM MEMORY AND FACTORY DEFAULT SETTINGS
(TOTAL NUMBER OF BITS: 14 BITS)
Bit
Name
PD1
PD0
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Bit
Function
Power-Down
Select
(2 bits)
DAC Input Data (12 bits)
Factory
Default
Value
00 (1)
1 (2)
0
000
0000
000
Note 1: See Table 5-2 for details.
2: Bit D11 = ‘1’ (while all other bits are “0”) enables the device to output 0.5 * VDD (= middle scale output).
Bit
Name
C2 C1 C0
RDY/
BSY
POR PD1 PD0 D11 D10 D9D8D7 D6D5D4D3 D2 D1D0
Bit
Function
Command
Type
(1)
Power-
Down
Select
Data (12 bits)
Note 1: Write EEPROM status indication bit (0:EEPROM write is not completed. 1:EEPROM write is complete.)
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| MCP4725A1T-E/CH | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Sngl 12-B NV DAC w/ I2C interface RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MCP4725A1T-E/CH-CUT TAPE | 制造商:Microchip 功能描述:MCP4725 Series 1 Ch I2C EEPROM Memory 5.5 V 12-Bit D/A Converter SMT - SOT-23-6 |
| MCP4725A2T-E/CH | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Sngl 12-B NV DAC w/ I2C interface RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MCP4725A2T-E/CH-CUT TAPE | 制造商:Microchip 功能描述:MCP4725 Series 1 Ch I2C EEPROM Memory 5.5 V 12-Bit D/A Converter SMT - SOT-23-6 |
| MCP4725A3T-E/CH | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Sngl 12-B NV DAC w/ I2C interface RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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