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參數(shù)資料
| 型號： | MAX7325ATG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 24TQFN-EP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 75 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 8 |
| 中斷輸出： | 是 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 1.71 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 24-TQFN-EP（4x4） |
| 包裝： | 管件 |
| 包括： | POR |
MAX7325
I2C Port Expander with 8 Push-Pull
and 8 Open-Drain I/Os
12
Maxim Integrated
If a port input data change occurs during the read
sequence, then INT is reasserted during the I2C STOP
bit. The MAX7325 does not generate another interrupt
during a single-byte or multibyte read.
Input port data is sampled during the preceding I2C
acknowledge bit (the acknowledge bit for the I2C slave
address in the case of a single-byte or two-byte read).
A multibyte read from the push-pull ports of the
MAX7325 repeatedly returns the status of the eight out-
put ports, read back as inputs.
A single-byte write to either port groups of the
MAX7325 sets the logic state of all eight ports.
A multibyte write to either port group of the MAX7325
repeatedly sets the logic state of all eight ports.
Reading the MAX7325
A read from the open-drain I/O ports of the MAX7325
starts with the master transmitting the port group’s
slave address with the R/W bit set to high. The
MAX7325 acknowledges the slave address, and sam-
ples the ports during the acknowledge bit. INT
deasserts during the slave address acknowledge.
Typically, the master reads 1 or 2 bytes from the
MAX7325, each byte being acknowledged by the mas-
ter upon reception with the exception of the last byte.
When the master reads one byte from the open-drain
ports of the MAX7325 and subsequently issues a STOP
condition (Figure 6), the MAX7325 transmits the current
port data, clears the change flags, and resets the tran-
sition detection. INT deasserts during the slave
SCL
MAX7325 SLAVE ADDRESS
S1
1
0
A
P
1
PORT
tIV
N
P0
ACKNOWLEDGE
FROM MASTER
ACKNOWLEDGE
FROM MAX7325
P1
P2
P3
P4
P5
P6
P7
D0
D1
D2
D3
D4
D5
D6
D7
PORT I/O
INT OUTPUT
R/W
PORT SNAPSHOT
tPH
tIR
PORT SNAPSHOT
S = START CONDITION
SHADED = SLAVE TRANSMISSION
P = STOP CONDITION
N = NOT ACKNOWLEDGE
tPSU
tIP
INT REMAINS HIGH UNTIL STOP CONDITION
Figure 6. Reading Open-Drain Ports of the MAX7325 (1 Data Byte)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7325ATG+ | 功能描述:接口-I/O擴展器 I2C Port Expander w/8 P-P Out & 8 I/O RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7325ATG+T | 功能描述:接口-I/O擴展器 I2C Port Expander w/8 P-P Out & 8 I/O RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7325ATG-T | 功能描述:接口-I/O擴展器 RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7325EVCMAXQU+ | 功能描述:界面開發(fā)工具 MAX7325 Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MAX7325EVKIT+ | 功能描述:界面開發(fā)工具 MAX7325 Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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