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| 型號： | MCP4461T-502E/ST |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 65/100頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL POT 257TAPS 5K 20TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 接片： | 257 |
| 電阻（歐姆）： | 5k |
| 電路數(shù)： | 4 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 150 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | I²C（設(shè)備位址） |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 帶卷 (TR) |
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2010 Microchip Technology Inc.
DS22265A-page 67
MCP444X/446X
FIGURE 7-4:
I2C Read (Last Memory Address Accessed).
FIGURE 7-5:
I2C Random Read.
STOP bit
Control Byte
1
010
S
1 A1 A0 1 A
Fixed
Address
Variable
Address
Read bits
P
0
000
0
0 D8 A1
Read bit
D3
D7 D6 D5 D4
D2 D1 D0 A2
Read Data bits
Note 1:
Master Device is responsible for A / A signal. If a A signal occurs, the MCP44XX will abort this
transfer and release the bus.
2:
The Master Device will Not Acknowledge, and the MCP44XX will release the bus so the
Master Device can generate a Stop or Repeated Start condition.
3:
The MCP44XX retains the last “Device Memory Address” that it has received. This is the
MCP44XX does not “corrupt” the “Device Memory Address” after Repeated Start or Stop
conditions.
4:
The Device Memory Address pointer defaults to 00h on POR and BOR conditions.
STOP bit
Control Byte
READ Command
1
01 0
S
1 A1 A0 0
1
AD AD AD AD
A1 x X A Sr
0
1
2
3
Fixed
Address
Variable
Address
Device
Memory
Address
Command
Control Byte
Read bits
P
0
00 0
0
0 D8 A1
Write bit
D3
D7 D6 D5 D4
D2 D1 D0 A2
1
0 1 0
1 A1 A0 1
A
Read bit
Repeated Start bit
Read Data bits
Note 1:
Master Device is responsible for A / A signal. If a A signal occurs, the MCP44XX will abort this
transfer and release the bus.
2:
The Master Device will Not Acknowledge, and the MCP44XX will release the bus so the Mas-
ter Device can generate a Stop or Repeated Start condition.
3:
The MCP44XX retains the last “Device Memory Address” that it has received. This is the
MCP44XX does not “corrupt” the “Device Memory Address” after Repeated Start or Stop
conditions.
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