- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384698 > MAX7319 (Maxim Integrated Products, Inc.) 4-Bit D-type Registers with 3-State Outputs 16-CFP -55 to 125 PDF資料下載
參數(shù)資料
| 型號： | MAX7319 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 4-Bit D-type Registers with 3-State Outputs 16-CFP -55 to 125 |
| 中文描述： | I²C端口擴(kuò)展器，具有8路輸入，可屏蔽瞬態(tài)檢測 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 251K |
| 代理商： | MAX7319 |
M
Slave Address
The MAX7319 has a 7-bit slave address (Figure 5). The
8th bit following the 7-bit slave address is the R/
W
bit. It
is low for a write command, and high for a read com-
mand.
The 1st (A6), 2nd (A5), and 3rd (A4) bits of the MAX7319
slave address are always 1, 1, and 0. Connect AD2 and
AD0 to GND, V+
,
SDA, or SCL to select slave address
bits A3, A2, A1, and A0. The MAX7319 has 16 possible
slave addresses (Table 3), allowing up to 16 MAX7319
devices on an I
2
C bus
Accessing the MAX7319
I
2
C-interface access to the MAX7319 is summarized as
follows (Table 2).
A
single-byte read
from the MAX7319 returns the sta-
tus of the eight input ports, and clears both the internal
transition flags and the
INT
output (Figure 7).
A
2-byte read
returns the status of the eight input ports
(as for a single-byte read), followed by the transition
flags. The internal transition flags and the
INT
output
are cleared when the MAX7319 acknowledges the
slave address byte, but the previous transition flag data
is sent as the second byte (Figure 8).
A
multibyte read
(more than 2 bytes before the I
2
C
STOP bit) repeatedly returns the input port data, alter-
nating with the transition flags. As the input data is
resampled for each transmission, and the transition
flags are reset each time, a multibyte read continuously
returns the current data and identifies any changing
input ports.
If a port input data change occurs during the read
sequence,
INT
is reasserted after the I
2
C STOP bit. The
MAX7319 does not generate another interrupt during a
single-byte or multibyte read.
I
2
C Port Expander with Eight Inputs and
Maskable Transition Detection
10
______________________________________________________________________________________
SDA
SCL
.
1
1
A3
A2
A1
A0
0
R/W
MSB
LSB
ACK
Figure 5. Slave Address
SCL
MAX7319 SLAVE ADDRESS
S
1
1
0
A
P
1
PORT INPUT
t
IV
N
I0
I1
I2
I3
I4
I5
I6
I7
D0
D1
D2
D3
D4
D5
D6
D7
PORT INPUTS
INT OUTPUT
R/W
PORT SNAPSHOT
t
PH
t
IR
PORT SNAPSHOT
t
PSU
t
IP
INT REMAINS HIGH UNTIL STOP CONDITION
Figure 6. Reading from the MAX7319 (1 Data Byte)
S = START CONDITION
P = STOP CONDITION
SHADED = SLAVE TRANSMISSION
N = NOT ACKNOWLEDGE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX732 | Hex D-type Flip-Flops With Clear 16-CFP -55 to 125 |
| MAX733 | +12V/+15V Step-Up Current-Mode Pwm Regulators |
| MAX732EWE | +5V/Adjustable Step-Up Current-Mode DC-DC Converters |
| MAX733CWA | +12V/+15V Step-Up Current-Mode Pwm Regulators |
| MAX733EWE | +12V/+15V Step-Up Current-Mode Pwm Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7319AEE | 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 |
| MAX7319AEE+ | 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 |
| MAX7319AEE+T | 制造商:Maxim Integrated Products 功能描述:I2C PORT EXPANDER 16QSOP - Tape and Reel |
| MAX7319AEE-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 |
| MAX7319ATE | 功能描述:接口-I/O擴(kuò)展器 I2C Port Expander 8 Input 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。