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参数资料
| 型号： | PT8A261DE |
| 厂商： | PERICOM SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, UUC18 |
| 封装： | DIE-18 |
| 文件页数： | 10/13页 |
| 文件大小： | 83K |
| 代理商： | PT8A261DE |
Data Sheet
PT8A261/262
PIR Sensor Light Switch Controller
PT0075(04/03)
Ver:5
6
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MODE
MODE is a tri-state input pin for operation mode selection.
See the following table 3.
Override Control: The term “override” refers to the change of
operating mode by switching the power switch twice within 3
seconds. When the chip is working in the AUTO mode (MODE
pin openned), the output is activated by a valid PIR trigger
signal and the output active duration is controlled by the OSCD
oscillation period. The lamp can be switched to ON from the
AUTO mode by either switching the MODE pin to V
CC or
switching the power switch twice within 3 seconds. The de-
vice can be toggled from ON to AUTO by switching the power
switch twice within 3 seconds again (override operation).
If the chip is overridden to ON and there is no further override
operation, it will return to AUTO automatically after an inter-
nal preset ON time duration (8 hours).
The override operation will cause the lamp flash (for TRIAC
version only). It will flash 3 times at 1Hz rate when changing
AUTO mode to other mode, and flash 3 times at 2Hz rate when
returning to AUTO mode. But no flash if mode is changed by
switching the MODE switch. See Figure 7 for override timing.
MODE
Status
Operation
Mode
Description
V
CC
ON
Output is always ON: RELAY pin sends high level for relay driving; TRIAC pulse train output is
synchronized by ZC for triac driving.
GND
OFF
Output is always OFF: RELAY pin sends low level for relay driving; TRIAC pin sends high level
for triac driving.
Open
AUTO
Outputs remain in the OFF state until activated by a valid PIR trigger input signal. When working
in the AUTO mode, the device allows override control by switching the ZC signal.
Table 3. Operation Modes by MODE Pin
Figure 7. Override Timing
ZC
Operating Mode
AUTO
ON
flash
ON
8 hours
Flash is only for TRIAC version
RST Pin
RST is used to reset the device. It is internal pull-high and
active low. The use of C
RST can extend the power-on initial
time. If the RST pin is openned (without CRST), the initial
time is 40 seconds. See Figure 8.
V
CC
GND
REST
RST
CRST
Figure 8. RST Application Example
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PT8A261P | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:PIR Sensor Light Switch Controller |
| PT8A261W | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:PIR Sensor Light Switch Controller |
| PT8A262 | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:PIR Sensor Light Switch Controller |
| PT8A2620 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PIR Sensor Light Switch Controller? |
| PT8A2621 | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:PIR Sensor Light Switch Controller |
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