pt8a990p Pericom Technology Inc, pt8a990p Datasheet

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pt8a990p

Manufacturer Part Number
pt8a990p
Description
9-function Remote Controller
Manufacturer
Pericom Technology Inc
Datasheet
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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pt8a990p 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

... OSCI OSCI 15 OSCO OSCO Right Left ON/OFF Top View 2 Data Sheet PT8A990P/991P 9-Function Remote Controller PC PLA Right Left Backward Forward Latch Turbo Circuit PT8A991P 22-Pin PDIP 22 VI2 1 21 VO1 VI1 ...

Page 3

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

Page 4

... Data Sheet PT8A990P/991P 9-Function Remote Controller ...

Page 5

... 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 key pressed, The PT8A990P will shut off automatically in 2s and nothing is output on the PC pin ...

Page 6

... Electrical Characteristics Table 4. DC Electrical Characteristics of PT8A990P ...

Page 7

... O C £ T £ unless otherwise specified Data Sheet PT8A990P/991P 9-Function Remote Controller ...

Page 8

... AC Electrical Characteristics Table 6. AC Electrical Characteristics of PT8A990P ...

Page 9

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

Page 10

... Data Sheet PT8A990P/991P Ver:2 ...

Page 11

... Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0053(15/03/01) 9-Function Remote Controller Notes Pericom Technology Inc. Web Site: www.pti.com.cn, www.pti-ic.com Fax: (86)-21-6485 2181 Fax: (852)- 2243 3667 Fax: (1)-408-435 1100 11 Data Sheet PT8A990P/991P Ver:2 ...

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