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參數(shù)資料
| 型號(hào)： | PCA9698 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 40-bit Fm+ I2C-bus advanced I/O port with RESET, OE and INT |
| 中文描述： | 40位調(diào)頻I2C總線先進(jìn)的I / O復(fù)位，光電和INT端口 |
| 文件頁數(shù)： | 18/47頁 |
| 文件大?。?/td> | 214K |
| 代理商： | PCA9698 |
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PCA9698_2
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 02 — 19 July 2006
18 of 47
Philips Semiconductors
PCA9698
40-bit Fm+ I
2
C-bus advanced I/O port with RESET, OE and INT
When all the devices have been accessed, the master must generate a STOP
command.
At the STOP command, all the PCA9698s that have been accessed will update their
Output Port registers that have been programmed and change the output states all at
the same time.
Remark:
After programming a PCA9698, its state machine will be in a
‘wait-for-STOP-condition’ until a STOP condition is received to update the Output Port
registers. Since this state machine will be in a ‘wait-state’, the part will not respond to its
own address until this state machine gets out to the idle condition, which means that the
device can be programmed only once and is not addressable again until a STOP condition
has been received.
Remark:
The PCA9698 has one level of buffers to store 5 bytes of data, and the actual
Output Port registers will get updated on the STOP condition. If the master sends more
than 5 bytes of data (with AI = 1), the data in the buffer will get overwritten.
7.8 Power-on reset
When power is applied to V
DD
, an internal Power-On Reset (POR) holds the PCA9698 in
a reset condition until V
DD
has reached V
POR
. At that point, the reset condition is released
and the PCA9698 registers and I
2
C-bus/SMBus state machine will initialize to their default
states. Thereafter, V
DD
must be lowered below 0.2 V to reset the device.
7.9 RESET input
A reset can be accomplished by holding the RESET pin LOW for a minimum of t
w(rst)
. The
PCA9698 registers and I
2
C-bus state machine will be held in their default state until the
RESET input is once again HIGH.
7.10 Interrupt output (INT)
The open-drain active LOW interrupt is activated when one of the port pins changes state
and the port pin is configured as an input and the interrupt on it is not masked. The
interrupt is deactivated when the port pin input returns to its previous state or the Input
Port register is read.
It is highly recommended to program the MSK register, and the IOC registers during the
initialization sequence after power-up, since any change to them during Normal mode
operation may cause undesirable interrupt events to happen.
Remark:
Changing an I/O from an output to an input may cause a false interrupt to occur
if the state of the pin does not match the contents of the Input Port register.
Only a Read of the Input Port register that contains the bit(s) image of the input(s) that
generated the interrupt clears the interrupt condition.
If more than one input register changed state before a read of the Input Port register is
initiated, the interrupt is cleared when all the input registers containing all the inputs that
changed are read.
Example: If IO0_5, IO2_3, and IO3_7 change state at the same time, the interrupt is
cleared only when INREG0, INREG2, and INREG3 are read.
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| PCA9698BS | 制造商:NXP Semiconductors 功能描述:IC IO EXPANDER 40BIT I2C 5 制造商:NXP Semiconductors 功能描述:IC, IO EXPANDER, 40BIT, I2C, 56HVQFN 制造商:NXP Semiconductors 功能描述:IC, IO EXPANDER, 40BIT, I2C, 56HVQFN; Chip Configuration:40bit; Bus Frequency:1MHz; Interface Type:I2C, SMBus; Supply Voltage Min:2.3V; Supply Voltage Max:5.5V; Digital IC Case Style:HVQFN; No. of Pins:56; No. of I/O's:40; MSL:MSL 1 ;RoHS Compliant: Yes |
| PCA9698BS,118 | 功能描述:接口-I/O擴(kuò)展器 I2C I/O EXPANDER GP 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 |
| PCA9698BS,118-CUT TAPE | 制造商:NXP 功能描述:PCA9698 Series 40-Bit Fm I2C-Bus Advanced I/O Port w/ Reset - HVQFN 56 |
| PCA9698DGG | 功能描述:接口-I/O擴(kuò)展器 I2C I/O EXPANDER GP 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 |
| PCA9698DGG,512 | 功能描述:接口-I/O擴(kuò)展器 I2C I/O EXPANDER GP 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 |
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