PT8A990A Datasheet, PDF (1/9 Pages) Pericom Semiconductor Corporation – 9-Function Remote Controller

PT8A990A/991A
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
9-Function Remote Controller
Features
 The PT8A990A works as the encoder and the
PT8A991AP works as the decoder
 9 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 (PT8A990A)
 Low operating current
 On-chip oscillator with an external resistor
 On-chip receiving amplifiers
 Few external components needed
PT8A990AP
Pin Configura1t8i-oPnin PDIP
Description
The PT8A992A/993A is a pair of CMOS LSIs
designed for remote controlled toy car application. They
have 9 control keys for controlling the corresponding
motion (i.e. forward, backward, left, right turbo and 4
other functional keys) of the remote controlled car.
They also have Forward(Backward) and turbo
combination application
PT8A991AP
22-Pin PDIP
Right
NC
GND
Backward
Forward
Turbo
SC
NC
F4
1
18 Left
2
17 F1
3
16 OSCI
4
15 OSCO
5
14 PC
6
13
V_CC
7
12 SO
8
11 F2
9
10 _F3
VO2 1
GND 2
SI 3
OSCI 4
OSCO 5
F1 6
Right 7
F2 8
Left 9
PC 10
ON/OFF ₁₁
22 VI2
21 VO1
20 VI1
19
V_CC
18 Turbo
17 Forward
16 Backward
15 LRTD
14 VT
13 F4
12 _F3
PT8A990A 18-Pin DIP (Top View)
PT8A991A 22-Pin DIP(Top View)
Pin Description
Pin description for PT8A990A
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Pin Name
Right
NC
GND
Backward
Forward
Turbo
SC
NC
F4
F3
F2
SO
Vcc
PC
OSCO
OSCI
F1
Left
Type
I
-
GND
I
I
I
O
I
I
I
I
O
P
O
O
I
I
I
12-07-0006
Top View
Description
The rightward function selected if this pin connected to GND
No connection
Ground
Backward function selected if this pin connected to GND
Forward function selected if this pin connected to GND
Turbo function selected if this pin connected to GND
Output pin of the encoding signal with carrier frequency
No connection
Function 4 selected if connected to GND
Function 3 selected if connected to GND
Function 2 selected if connected to GND
Output pin of the encoding signal without carrier frequency
Power supply
Power control output pin
Oscillator output pin
Oscillator input pin
Function 1 selected if connected to GND
Leftward function selected if this pin connected to GND
PT0095-1
1
07/06/2012