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參數(shù)資料
| 型號： | ADNK-3080 |
| 廠商： | Avago Technologies Ltd. |
| 英文描述： | High-Performance Optical Mouse Sensor |
| 中文描述： | 高性能光學(xué)鼠標(biāo)傳感器 |
| 文件頁數(shù)： | 22/39頁 |
| 文件大?。?/td> | 655K |
| 代理商： | ADNK-3080 |
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22
Notes on Power-up and the serial port
Reset Circuit
The ADNS-3080 does not perform an internal power up
self-reset. The reset pin must be raised and lowered to
reset the chip. This should be done every time power is
applied. During power-up there will be a period of time
after the power supply is high but before any clocks are
available. The table below shows the state of the various
pins during power-up and reset when the RESET pin is
driven high by a micro-controller.
Power Down Circuit
The following table lists the pin states during power
down.
State of Signal Pins After VDD is Valid
Pin
Before Reset
During Reset
After Reset
SPI pullups
Undefined
Off
On (default)
NCS
Hi-Z control functional
Hi-Z control functional
Functional
MISO
Driven or hi-Z
(per NCS)
Driven or hi-Z
(per NCS)
Low or hi-Z
(per NCS)
SCLK
Undefined
Ignored
Functional
MOSI
Undefined
Ignored
Functional
LED_CTRL
Undefined
Low
High
RESET
Functional
High
(externally driven)
Functional
NPD
Undefined
Ignored
Functional
State of Signal Pins During Power Down
Pin
NPD low
After wake from PD
SPI pullups
off
pre-PD state
NCS
hi-Z control functional
functional
MISO
low or hi-Z (per NCS)
pre-PD state or hi-Z
SCLK
ignored
functional
MOSI
ignored
functional
LED_CTRL
low
high
RESET
functional
functional
NPD
low (driven externally)
functional
REFC
V
DD3
low
REFC
OSC_IN
OSC_IN
OSC_OUT
high
OSC_OUT
The chip is put into the power down (PD) mode by
lowering the NPD input. When in PD mode, the oscilla-
tor is stopped but all register contents are retained. To
achieve the lowest current state, all inputs must be held
externally within 200mV of a rail, either ground or V
DD3
.
The chip outputs are driven low or hi-Z during PD to
prevent current consumption by an external load.
LED Drive Mode
The LED has 2 modes of operation: DC and Shutter. In
DC mode it is on at all times the chip is powered except
when in the power down mode via the NPD pin. In
shutter mode the LED is on only during the portion of
the frame that light is required. The LED_MODE bit in the
Configuration_bits register sets the LED mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADNS-3080 | High-Performance Optical Mouse Sensor |
| ADNS-3150-001 | Optical Mouse Designer’s Kit |
| ADNS-5020-EN | Optical Mouse Sensor |
| ADNS-5030 | Low Power Optical Mouse Sensor |
| ADNS-5100 | Solid-State Optical Mouse Lens |
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