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參數(shù)資料
| 型號(hào)： | MAX7329AUP+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8 I/O, PIA-GENERAL PURPOSE, PDSO20 |
| 封裝： | 4.40 MM, LEAD FREE, MO-153AC, TSSOP-20 |
| 文件頁數(shù)： | 13/13頁 |
| 文件大?。?/td> | 611K |
| 代理商： | MAX7329AUP+ |
occur during the transmission are detected. INT always
remains high until a STOP condition.
The master can read 2 bytes from the MAX7328 or
MAX7329 and then issue the STOP condition (Figure 9).
In this case, the MAX7328 or MAX7329 transmits the cur-
rent port data repeatedly. INT goes high during the port
data-byte acknowledge. The new snapshot data is the
current port data transmitted to the master; therefore,
any port transitions that occur during the transmission
are detected. INT remains high until the STOP condition.
Writing to the MAX7328/MAX7329
A data write to the MAX7328 or MAX7329 comprises the
transmission of the MAX7328’s or MAX7329’s slave
address with the R/W bit set to zero, followed by one or
more bytes of data. The MAX7328 or MAX7329 acknowl-
edges the slave address and any subsequent bytes of
data until the master issues a STOP condition (Figure 10).
Applications Information
Hot Insertion
The MAX7328/MAX7329’s SDA, SCL, AD0, AD1, AD2,
RST, and P0–P7 I/Os remain high impedance with up to
+6V asserted on them when the MAX7328 or MAX7329 is
powered down (V+ = 0V). The MAX7328/MAX7329 can
therefore be used in hot-swap applications.
Each of the I/O ports P0–P7 has protection diodes to V+
and GND. When a port output is back driven to a volt-
age higher than V+ or lower than GND, the appropriate
protection diode clamps the output to a diode drop
above V+ or below GND. When a MAX7328 or MAX7329
is powered down (V+ = 0V), each output port’s protec-
tion diodes to V+ and GND continue to appear as a
diode clamp from each output to GND (Figure 1).
Power-Supply Considerations
The MAX7328/MAX7329 operate with a 2.5V to 5.5V
power-supply voltage over the -40°C to +125°C temper-
ature range. Bypass the power supply to GND with a
ceramic capacitor of at least 0.047F as close to the
device as possible.
Chip Information
PROCESS: BiCMOS
MAX7328/MAX7329
I2C Port Expanders with Eight I/O Ports
_______________________________________________________________________________________
9
SCL
MAX7328/MAX7329 SLAVE ADDRESS
SA
P
1
PORT INPUT DATA
DATA 1
DATA 2
DATA 3
DATA 4
DATA 1
DATA 4
INT OUTPUT
R/W
ACKNOWLEDGE FROM MAX7328/MAX7329
PORT SNAPSHOT
TAKEN
tIV
tPH
tIR
tIV
A
P7
P6
P4
P5
P3
P2
P1
P0
D0
D1
D2
D3
D4
D5
D6
D7
PORT SNAPSHOT
TAKEN
tPSU
P0
P1
P2
P3
P4
P5
P6
P7
D7
D6
D5
D4
D3
D2
D1
D0
A
PORT SNAPSHOT
TAKEN
PORT
SNAPSHOT DATA
PORT SNAPSHOT DATA
ACKNOWLEDGE FROM
MASTER
ACKNOWLEDGE FROM
MASTER
tIR
S = START CONDITION
SHADED = SLAVE TRANSMISSION
P = STOP CONDITION
N = NOT ACKNOWLEDGE
Figure 9. Reading from the MAX7328/MAX7329 (2 Data Bytes)
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相關(guān)代理商/技術(shù)參數(shù) |
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| MAX7329AWE | 功能描述:接口-I/O擴(kuò)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 |
| MAX7329AWE+ | 功能描述:接口-I/O擴(kuò)展器 I2C Port Expander w/12 P-P Out & 4 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 |
| MAX7329AWE+T | 功能描述:接口-I/O擴(kuò)展器 I2C Port Expander w/12 P-P Out & 4 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 |
| MAX7329AWE-T | 功能描述:接口-I/O擴(kuò)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 |
| MAX732C/D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:+12V/+15V Step-Up Current-Mode Pwm Regulators |
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