PT8A991P Pericom Semiconductor, PT8A991P Datasheet

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PT8A991P

Manufacturer Part Number
PT8A991P
Description
Manufacturer
Pericom Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PT8A991P
Manufacturer:
PT
Quantity:
20 000
PT0053(15/03/01)
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Features
• The PT8A990P works as the encoder and the
• Nine output pins, 5 for forward, backward, left,
• Operation power supply: 3.0V to 5.5V
• Auto power-off if no key pressed within 2s
• Auto shut-down if keep pressing a key for more
• Auto shut down if no signal input for more than 5
• Low operating current
• On-chip oscillator with an external resistor
• On-chip receiving amplifiers
• Few external components needed
Block Diagram
Figure 1. Block Diagram of PT8A990P
PT8A991P works as the decoder
right and turbo functions, and 4 functional keys
(PT8A990P)
than 4 minutes (PT8A990P)
minutes (PT8A991P)
Backward
Forward
OSCO
Turbo
OSCI
Right
Left
F1
F2
F3
F4
Oscillator
Circuit
Latch
Counters
f
0
Generator
1
Control
Timing
Logic
General Description
The PT8A990P/991P is a pair of CMOS LSIs designed
for remote controlled toy car application. They have nine
control keys for controlling the corresponding motion (i.e.
forward, backward, left, right, turbo and 4 functional keys)
of the remote controlled car. They also have ‘Forward
(Backward)’ and ‘Turbo’ combination application.
TDIS
9-Function Remote Controller
MUX
PC
f
0
/2
PT8A990P/991P
SC
SO
Data Sheet
Ver:2

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PT8A991P Summary of contents

Page 1

... Features • The PT8A990P works as the encoder and the PT8A991P works as the decoder • Nine output pins, 5 for forward, backward, left, right and turbo functions, and 4 functional keys • Operation power supply: 3.0V to 5.5V • Auto power-off if no key pressed within 2s (PT8A990P) • ...

Page 2

... Figure 2. Block Diagram of PT8A991P OSCI OSCO SI VI1 VI2 VT1 VT2 LRTD Package and Pin Assignment PT8A990P 18-Pin PDIP 1 Right 2 TDIS 3 GND 4 Backward 5 Forward 6 Turbo PT0053(15/03/01) ON/OFF Timing Oscillator Counter Generator Decoding Amp Circuit VO1 VO2 VT Detector VO2 ...

Page 3

Pin Description Table 1. Pin Description of PT8A990P ...

Page 4

... Table 2. Pin Description of PT8A991P ...

Page 5

... Functional Description In normal operation without ‘Turbo’, forward (backward) out- put pin of the decoder PT8A991P sends out a 60Hz signal. In operation with ‘Forward (Backward)’ and ‘Turbo’ combined, the output signal will be completely high. This function is de- picted as follows. Once a key is pressed, the PT8A990P is powered on, and the PC output pin keeps on a high level ...

Page 6

Recommended Operating Conditions Table 3. Recommended Operating Conditions ...

Page 7

... Table 5. DC Electrical Characteristics of PT8A991P ...

Page 8

... Note: 1.These specifications apply for V = 4.0V and 0 CC 2.The frequency of standard samples is tested on standard testing-board. Table 7. AC Electrical Characteristics of PT8A991P ...

Page 9

Figure 5. Typical Application Circuit of PT8A990P PT0053(15/03/01) 9-Function Remote Controller PT8A990P ...

Page 10

... Figure 6. Typical Application Circuit of PT8A991P PT0053(15/03/01) 9-Function Remote Controller ...

Page 11

Email: support@pti.com.cn China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 U.S.A.: 2380 Bering Drive, San ...

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