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参数资料
| 型号： | ISL22319 |
| 厂商： | Intersil Corporation |
| 英文描述： | Low Noise, Low Power, I2C Bus, 128 Taps, Wiper Only(低噪声,低功率，I2C总线, 128抽头电位器) |
| 中文描述： | 低噪声，低功耗，I2C总线，128抽头，雨刷，只有（低噪声，低功率和I2C总线，128抽头电位器） |
| 文件页数： | 10/13页 |
| 文件大小： | 384K |
| 代理商： | ISL22319 |
10
FN6310.0
July 3, 2006
Protocol Conventions
Data states on the SDA line must change only during SCL
LOW periods. SDA state changes during SCL HIGH are
reserved for indicating START and STOP conditions (See
Figure 12). On power-up of the ISL22319 the SDA pin is in
the input mode.
All I
2
C interface operations must begin with a START
condition, which is a HIGH to LOW transition of SDA while
SCL is HIGH. The ISL22319 continuously monitors the SDA
and SCL lines for the START condition and does not
respond to any command until this condition is met (See
Figure 12). A START condition is ignored during the
powerHup of the device.
All I
2
C interface operations must be terminated by a STOP
condition, which is a LOW to HIGH transition of SDA while
SCL is HIGH (See Figure 12). A STOP condition at the end
of a read operation, or at the end of a write operation places
the device in its standby mode.
An ACK, Acknowledge, is a software convention used to
indicate a successful data transfer. The transmitting device,
either master or slave, releases the SDA bus after
transmitting eight bits. During the ninth clock cycle, the
receiver pulls the SDA line LOW to acknowledge the
reception of the eight bits of data (See Figure 13).
The ISL22319 responds with an ACK after recognition of a
START condition followed by a valid Identification Byte, and
once again after successful receipt of an Address Byte. The
ISL22319 also responds with an ACK after receiving a Data
Byte of a write operation. The master must respond with an
ACK after receiving a Data Byte of a read operation
A valid Identification Byte contains 01010 as the five MSBs, and
the following two bits matching the logic values present at pins
A1 and A0. The LSB is the Read/Write bit. Its value is “1” for a
Read operation, and “0” for a Write operation (See Table 3).
TABLE 3. IDENTIFICATION BYTE FORMAT
0
1
0
1
0
A1
A0
R/W
(MSB)
(LSB)
Logic values at pins A1 and A0 respectively
SDA
SCL
START
DATA
STABLE
DATA
CHANGE
STOP
DATA
STABLE
FIGURE 12. VALID DATA CHANGES, START, AND STOP CONDITIONS
SDA OUTPUT FROM
TRANSMITTER
SDA OUTPUT FROM
RECEIVER
8
1
9
START
ACK
SCL FROM
MASTER
HIGH IMPEDANCE
HIGH IMPEDANCE
FIGURE 13. ACKNOWLEDGE RESPONSE FROM RECEIVER
ISL22319
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| ISL22319UFU8Z-TK | 功能描述:IC POT DGTL 128TP LN LP 8-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
| ISL22319WFU8Z | 功能描述:IC POT DGTL 128TP LN LP 8-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 接片:32 电阻（欧姆）:50k 电路数:1 温度系数:标准值 50 ppm/°C 存储器类型:易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 供应商设备封装:TSOT-23-6 包装:带卷 (TR) |
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| ISL22323 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Dual Digitally Controlled Potentiometer XDCP |
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