- 您现在的位置：买卖IC网 > PDF目录3772 > MAX7326ATG+ (Maxim Integrated Products)IC I/O EXPANDER I2C 16B 24TQFN PDF资料下载
参数资料
| 型号： | MAX7326ATG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/20页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 接口： | I²C |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 1.71 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 管件 |
| 包括： | POR |
MAX7326
I2C Port Expander with 12 Push-Pull Outputs
and 4 Inputs
_______________________________________________________________________________________
9
A long read sequence (more than 2 bytes) can be used
to poll the expander continuously without the overhead
of resending the slave address. If more than 2 bytes
are read from the expander, the expander repeatedly
returns the 2 bytes of input port data followed by the
transition flags. The inputs are repeatedly resampled
and the transition flags repeatedly reset for each pair of
bytes read. All changes that occur during a long read
sequence are detected and reported.
The MAX7326 includes a 4-bit interrupt mask register
that selects which inputs generate an interrupt upon
change. Each input’s transition flag is set when its input
changes, independent of the interrupt mask register
settings. The interrupt mask register allows the proces-
sor to be interrupted for critical events, while the inputs
and the transition flags can be polled periodically to
detect less-critical events.
The INT output is not reasserted during a read
sequence to avoid recursive reentry into an interrupt
service routine. Instead, if a data change occurs that
would normally cause the INT output to be set, the INT
assertion is delayed until the STOP condition. INT is not
reasserted upon a STOP condition if the changed input
data is read before the STOP occurs. The INT logic
ensures that unnecessary interrupts are not asserted,
yet data changes are detected and reported no matter
when the change occurs.
Transition-Detection Masks
The transition-detection logic incorporates a change
flag and an interrupt mask bit for each of the four input
ports. The four change flags can be read through the
serial interface, and the 4-bit interrupt mask is set
through the serial interface.
Each port’s change flag is set when that port’s input
changes, and the change flag remains set even if the
input returns to its original state. The port’s interrupt
mask determines whether a change on that input port
generates an interrupt. Enable interrupts for high-priority
inputs using the interrupt mask. The interrupt allows the
system to respond quickly to changes on these inputs.
Poll the MAX7326 periodically to monitor less-important
inputs. The change flags indicate whether a permanent or
transient change has occurred on any input since the
MAX7326 was last accessed.
PIN CONNECTION
DEVICE ADDRESS
OUTPUTS POWER-UP DEFAULT
AD2
AD0
A6
A5
A4
A3
A2
A1
A0
O15
O14
O13
O12
O11
O10
O9
O8
SCL
GND
101
000
0
1
11000
0
SCL
V+
101
000
1
11111
1
SCL
1
0
1
0
1
0
1
11111
1
SCL
SDA
1
0
1
0
1
11111
1
SDA
GND
101
010
0
1
11000
0
SDA
V+
101
010
1
11111
1
SDA
SCL
1
0
1
0
1
0
1
11111
1
SDA
1
0
1
0
1
11111
1
GND
101
100
0
00000
0
GND
V+
101
100
1
0
00111
1
GND
SCL
101
0
00111
1
GND
SDA
101
1
0
00111
1
V+
GND
101
110
0
1
11000
0
V+
101
110
1
11111
1
V+
SCL
101
111
0
1
11111
1
V+
SDA
101
111
1
11111
1
Table 3. MAX7326 Address Map for Outputs O8–O15
相关PDF资料 |
PDF描述 |
|---|---|
| MAX7323AEE+ | IC I/O EXPANDER I2C 4B 16QSOP |
| MAX7320ATE+ | IC I/O EXPANDER I2C 8B 16TQFN-EP |
| DS4520E+ | IC I/O EXPANDER I2C 9B 16TSSOP |
| MAX7315AEE+ | IC I/O EXPANDER I2C 8B 16QSOP |
| MAX7315AUE+ | IC I/O EXPANDER I2C 8B 16TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7326ATG+ | 功能描述:接口-I/O扩展器 I2C Port Expander w/12 P-P Out & 4 In RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7326ATG+T | 功能描述:接口-I/O扩展器 I2C Port Expander w/12 P-P Out & 4 In RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7326ATG-T | 功能描述:接口-I/O扩展器 RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7326EVCMAXQU+ | 功能描述:界面开发工具 MAX7326 Max7526 Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX7326EVKIT+ | 功能描述:界面开发工具 MAX7326 Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。