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Pericom Technology

PT8A977B Datasheet Preview

PT8A977B Datasheet

5 Function Remote Controller for 1V Micro Cars

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Data Sheet
om PT8A977B/9781 5-Function Remote
.c Controller for 1V Micro Cars
U|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
eet4Features
General Description
taSh• PT8A977B works as encoder and PT8A9781
aworks as decoder
.D• Four control functions
ww• Operating power-supply voltage: 1.8V to 5.0V(977B)
w 1.0V to 1.5V (9781)
The PT8A977B and PT8A9781 provide a complete
control functions to the remote-controlled toy. The
PT8A9781 has four output pins corresponding with
the four actions i.e, forward, backward, right, left.
The received signals are amplified by the three-stage
• Auto-power-off and oscillation-off if no press on
many button (977B)
• Press on any button to wake up (977B)
o• On-chip oscillator with an external resistor (977B)
.c• On-chip oscillator with an external resistor and
capacitor (9781)
U• On-chip amplifiers (9781)
t4• Low operating current
e• Few external components needed
eOrdering Information
hPart No.
SPT8A977BP
taPT8A977BW
aPT8A977BDE
.DPT8A9781W
wwwPT8A9781DE
Package
14-pin DIP
14-pin SOIC
Die Form
16-pin SOIC
Die Form
amplifier, and then the appropriate amplified signals
are sampled, fault-tolerantly checked and decoded
to control the actions of the remote-controlled toy.
There is an internal oscillator in the PT8A9781. By
adding an external resistor and capacitor conveniently,
the oscillator will be constructed. The external resistor
and capacitor can adjust the oscillator frequency. The
relative error between the frequencies of the two on-
chip oscillators in the PT8A977B and PT8A9781 must
be less than ±25%.
PT0118(02/04)
1 www.DataSheet4U.Vcero:3m




Pericom Technology

PT8A977B Datasheet Preview

PT8A977B Datasheet

5 Function Remote Controller for 1V Micro Cars

No Preview Available !

Data Sheet
PT8A977B/9781 5-Function Remote
Controller for 1V Micro Cars
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Block Diagram
Block Diagram of 977B
OSCI
OSCO
Oscillator
OFF
Timing
Generator
PC
Forward
Backward
Left
Right
Turbo
Input
Circuit
Encoding
Circuit
Output
Circuit
SO
SC
Block Diagram of 9781
OSCI
OSCO
SI
Oscillator
Timing
Generator
Signal Sample &
Amp Fault-Tolerant
Check
Latch
Decoding
Circuit
VI1 Amp
Voltage
Reference
VO1
VI2
Output
Circuit
Voltage
Booster
Amp
Right
Left
Backward
Forward
FOUT
VO2
VR
Pin Configuration
PT8A977BP/977BW
14-Pin DIP/14-Pin SOIC
Right
Test
GND
Backward
Forward
Turbo
SC
1
2
3
4
5
6
7
14 Left
13 OFF
12 OSCI
11 OSCO
10 PC
9 VCC
8 SO
Top View
PT8A9781W
16-Pin SOIC
VO2
SI
GND
OSCI
OSCO
Left
FOUT
Forward
1
2
3
4
5
6
7
8
16 VI2
15 VR
14 VO1
13 VI1
12 VCC
11 NC
10 Right
9 Backward
PT0118(02/04)
2
Ver:3


Part Number PT8A977B
Description 5 Function Remote Controller for 1V Micro Cars
Maker Pericom Technology
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PT8A977B Datasheet PDF






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