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參數(shù)資料
| 型號： | 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位調頻I2C總線先進的I / O復位，光電和INT端口 |
| 文件頁數(shù)： | 20/47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
20 of 47
Philips Semiconductors
PCA9698
40-bit Fm+ I
2
C-bus advanced I/O port with RESET, OE and INT
7.12 Output enable input (OE)
The configurable active LOW or active HIGH output enable pin allows to enable or disable
all the I/Os at the same time.
When a LOW level is applied to the OE pin, with OEPOL = 0 (register 2Ah, bit 4) or a
HIGH level is applied to the OE pin, with OEPOL = 1 (register 2Ah, bit 0), all the I/Os
configured as outputs are enabled and the logic value programmed in their respective
OP registers is applied to the pins.
When a HIGH level is applied to the OE pin, with OEPOL = 0 (register 2Ah, bit 0) or a
LOW level is applied to the OE pin, with OEPOL = 1 (register 2Ah, bit 0), all the I/Os
configured as outputs are 3-stated.
For applications requiring LED blinking with brightness control, this pin can be used to
control the brightness by applying a high frequency PWM signal on the OE pin. LEDs can
be blinked using the Output Port registers and can be dimmed using the PWM signal on
the OE pin thus controlling the brightness by adjusting the duty cycle.
Default is OEPOL = 0, so if the OE pin is held HIGH, the outputs are disabled. The OE pin
needs to be pulled LOW or OEPOL changed to ‘1’ to enable the outputs.
It is recommended to define the required polarity of the OE input by programing the value
of OEPOL before programming the configuration registers (IOC register).
7.13 Live insertion
The PCA9698 is fully specified for live-insertion applications using I
OFF
, power-up
3-states, robust state machine, and 50 ns noise filter. The I
OFF
circuitry disables the
outputs, preventing damaging current backflow through the device when it is powered
down. The power-up 3-states circuitry places the outputs in the high-impedance state
during power-up and power-down, which prevents driver conflict and bus contention.
The robust state machine does not respond until it sees a valid START condition and the
50 ns noise filter will filter out any insertion glitches. The PCA9698 will not cause
corruption of active data on the bus nor will the device be damaged or cause damage to
devices already on the bus when similar featured devices are being used.
7.14 Standby
The PCA9698 goes into standby when the I
2
C-bus is idle. Standby supply current is lower
than 1.0
μ
A (typical).
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相關代理商/技術參數(shù) |
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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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9698DGG,512 | 功能描述:接口-I/O擴展器 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
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