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参数资料
| 型号： | MAX7326AEG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 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-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 管件 |
| 包括： | POR |
MAX7326
I2C Port Expander with 12 Push-Pull Outputs
and 4 Inputs
______________________________________________________________________________________
13
The master can read 2 bytes from the group A ports of the
MAX7326 and then issues a STOP condition (Figure 7). In
this case, the MAX7326 transmits the current port data,
followed by the transition flags. The transition flags are
then cleared, and transition detection restarts. INT goes
high (high impedance if an external pullup resistor is not
fitted) during the slave acknowledge. The new snapshot
data is the current port data transmitted to the master, and
therefore, port transitions occuring during the transmission
are detected. INT remains high until the STOP condition.
A read from the group B ports of the MAX7326 starts
with the master transmitting the group’s slave address
with the R/W bit set high. The MAX7326 acknowledges
the slave address and samples the logic state of the
output ports during the acknowledge bit. The master
can read one or more bytes from the output ports of the
MAX7326, and then issues a STOP condition (Figure 8).
The MAX7326 transmits the current port data, read
back from the actual port outputs (not the port output
latches) during the acknowledge bit. If a port is forced
to a logic state other than its programmed state, the
readback reflects this. If driving a capacitive load, the
readback port level verification algorithms may need to
take the RC rise/fall time into account.
Typically, the master reads one byte from the group B
ports of the MAX7326, then issues a STOP condition
(Figure 8). However, the master can read two or more
bytes from the output ports of the MAX7326, and then
issues a STOP condition. In this case, the MAX7326
resamples the port outputs during each acknowledge
and transmits the new data each time.
SCL
MAX7326 SLAVE ADDRESS
SA
P
1
PORTS
INT OUTPUT
R/W
ACKNOWLEDGE
FROM MAX7326
ACKNOWLEDGE
FROM MASTER
PORT SNAPSHOT
tIV
tPH
tIR
A
O0
O1
I2
I3
I4
I5
O6
O7
D0
D1
D2
D3
D4
D5
D6
D7
PORT SNAPSHOT
tPS
tIP
F0
F1
F2
F3
F4
F5
F6
F7
D7
D6
D5
D4
D3
D2
D1
D0
A
PORT SNAPSHOT
FLAG
INT REMAINS HIGH UNTIL STOP CONDITION
S = START CONDITION
P = STOP CONDITION
A = ACKNOWLEDGE
Figure 7. Reading Group A Ports of the MAX7326 (2 Data Bytes)
SCL
MAX7326 SLAVE ADDRESS
SA
P
1
ACKNOWLEDGE FROM MAX7326
PORT SNAPSHOT DATA
PORT SNAPSHOT TAKEN
A
P0
P1
P2
P3
DATA 1
P4
P5
P6
P7
D0
D1
D2
D3
D4
D5
D6
D7
PORT SNAPSHOT TAKEN
ACKNOWLEDGE
FROM MASTER
R/W
S = START CONDITION
P = STOP CONDITION
A = ACKNOWLEDGE
Figure 8. Reading Group B Ports of the MAX7326
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7326AEG+ | 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 |
| MAX7326AEG+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 |
| MAX7326AEG-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 | 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 |
| 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 |
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