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參數資料
| 型號： | TMS3637D |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 搖控器 |
| 英文描述： | INFRARED, TRANSMITTER/RECEIVER IC, PDSO8 |
| 封裝： | PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數： | 54/54頁 |
| 文件大小： | 384K |
| 代理商： | TMS3637D |
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1–4
1.4
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
TIME
3
I/O
Depending on the configuration, TIME is used for measuring the internal analog-amplifier output
in the device test mode, putting the device into the transmit mode, or controlling an internal clock
oscillator for various transmitter and receiver configurations.
–
When OSCC is held at VCC + 0.5 V and three or more low pulses are applied to OSCR,
the device is in the test mode and the output of the internal analog amplifier can be
measured at TIME.
–
When the device is configured as a continuous transmitter, an internal pullup is connected
to TIME. If TIME is then forced low, the device transmits codes for the duration that TIME
is held low. (TIME must be connected to an external pullup.)
–
When the device is configured as a triggered transmitter and if TIME is then forced low,
the device transmits one code or a code train. (TIME must be connected to an external
pullup.)
–
When the device is configured as a periodic transmitter, connect an external resistor and
capacitor between TIME and VCC to transmit code after each RC time constant has
expired.
–
When the device is configured as a VTR, TIME must be held high to receive codes. The
device produces a VTR pulse on OUT after confirmation of a correct received code.
Connecting a parallel resistor and capacitor between TIME and VCC lengthens the output
pulse (VTR) duration.
–
Configured as a train receiver, connect an external parallel resistor and capacitor between
TIME and VCC, which are used to set the length of time the device is looking for two, four,
or eight correct received codes to output a valid VTR pulse on OUT.
–
Configured as a Q-state receiver, TIME has the same function as the VTR receiver above,
except the detection of the correct code causes OUT to toggle between the low and high
states.
VCC
8
5-V supply voltage
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