PT8A9791W [PERICOM]
Remote Control Transmitter IC, CMOS, PDSO14,;
| 型号： | PT8A9791W |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Remote Control Transmitter IC, CMOS, PDSO14, 光电二极管 |
| 文件： | 总10页 (文件大小：63K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Features
General Description
• The PT8A9791 works as the encoder and the
PT8A9792 works as the decoder
The PT8A9791 and PT8A9792 is a pair of CMOS
ICs designed for remote control toy car application.
They have full functional keys for motion control of
a remote control car, including forward, backward,
left, right and 2 additional keys OP1 and OP2. Low
Voltage CMOS technology is employed for the
PT8A9791 and PT8A9792.
• Full functions of Forward, Backward, Left, Right,
and OP1 and OP2
• 100% and 60% duty cycle pulse output control
for Forward/Backward and Left/Right
• 50% duty cycle pulse output control for OP1, OP2
• Wide operation power supply: 3V - 12V
• SO (Serial Output) pin for external RF transmitter
(PT8A9791)
The function of OP1,OP2 is depicted in Table 3. Two
additional control pins FBP and LRP of PT8A9791
for pulse effect control are described in Tables 4 and
5.
• On-chip oscillator with an external resistor
• Few external components needed
Ordering Information
Ordering Number
PT8A9791P
Package
14-Pin PDIP
14-Pin SOP
16-Pin PDIP
16-Pin SOP
PT8A9791W
PT8A9792P
PT8A9792W
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Block Diagram
Figure 1. Block Diagram of PT8A9791
OSCI
OSCO
Timing
Generator
SO
Oscillator
Encoder
Forward
Backward
Left
Latch
Logic
Right
OP1
OP2
Circuit
Control
PC
FBP
LRP
VCC
Figure 2. Block Diagram of PT8A9792
Timing
Generator
OSCI
OSCO
Oscillator
Counter
Amp
SI
Counter
PLA
VI1
VI2
VCC
VO1
VO2
Right
Left
Control
Logic
Latch
Circuit
Backward
Forward
OP1
CON
OP2
Package and Pin Assignment
PT8A9791
14-Pin PDIP
14-Pin SOP
PT8A9792
16-Pin PDIP
16-Pin SOP
Backward
Right
Left
CON
VCC
VI1
VO1
VI2
1
2
3
4
5
6
7
8
16
Forward
1
2
3
4
5
6
7
14
13
12
11
10
9
Left
VCC
Right
OP1
OP2
PC
Forward
Backward
FBP
15
14
13
12
11
10
9
OP1
OP2
OSCO
OSCI
SI
GND
VO2
LRP
GND
OSCI
OSCO
8
SO
Top View
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Pin Description
Table 1. Pin Description of PT8A9791
Pin No
Pin Name
Forward
Type
Description
1
I
I
Forward function input, active high, built-in pull-down resistor
Backward function input, active high, built-in pull-down resistor
Backward
2
Pulse Mode Control input for PT8A9792’s Forward and Backward, active high, built-in
pull-down resistor (Details see Table 4)
3
4
FBP
LRP
I
I
Pulse Mode Control input for PT8A9792’s Left and Right, active high, built-in pull-
down resistor (Details see Table 5)
GND
OSCI
OSCO
SO
GND
5
6
Ground
I
Oscillator input pin
O
7
Oscillator output pin
O
8
Serial Data Output
PC
O
9
Power control output pin, active high
OP2
OP1
Right
VCC
I
10
11
12
13
14
Option 2 Function input, active high, built-in pull-down resistor (See Table 3)
Option 1 Function input, active high, built-in pull-down resistor (See Table 3)
Right function input, active high, built-in pull-down resistor
Power supply
I
I
Power
I
Left
Left function input, active high, built-in pull-down resistor
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Table 2. Pin Description of PT8A9792
Pin No
Pin Name
Forward
OP1
Type
Description
Forward output, active high or pulse output (Details see Table 4)
Option 1 Open Drain output, pulse output (Details see Table 3)
Option 2 Open Drain output, pulse output (Details see Table 3)
Oscillator output
1
2
O
O
O
O
I
3
OP2
4
OSCO
OSCI
SI
5
Oscillator input
6
I
Serial Data Input
7
GND
VO2
GND Ground
8
O
I
Inverse Amplifier 2 output
9
VI2
Inverse Amplifier 2 input
Inverse Amplifier 1 output
Inverse Amplifier 1 input
10
11
12
13
14
15
16
VO1
O
I
VI1
VCC
Power Power Supply
CON
Left
I
Shunt Regulator Control, enabled when high voltage, disabled when low voltage
O
O
O
Turn Left output, active high or pulse output (Details see Table 5)
Turn Right output, active high or pulse output (Details see Table 5)
Backward Output, active high or pulse output (Details see Table 4)
Right
Backward
Table 3. OP1 and OP2 Functions
Input to PT8A9791
Output from PT8A9792
OP1
High
Open
High
Open
OP2
Open
High
High
Open
OP1
Pulse
Open
Pulse
Open
OP2
Open
Pulse
Pulse
Open
Notes:
1. OP1 and OP2 are open drain.
2. Pulse = 125Hz (fOSC / 1024) in 50% duty cycle
3. When OP1 and OP2 are both active, the output pulse is opposite phase.
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Table 4. FBP Functions
Table 5. LRP Functions
Output from
PT8A9792
Output from
PT8A9792
Input to PT8A9791
Input to PT8A9791
FBP
Open
Open
Open
High
High
High
Forward Backward Forward Backward
LRP
Open
Open
Open
High
High
High
Right
Open
High
Open
Open
High
Open
Left
Open
Open
High
Open
Open
High
Right
Left
Low
Low
High
Low
Low
Pulse
Open
High
Open
Open
High
Open
Open
Open
High
Open
Open
High
Low
High
Low
Low
Pulse
Low
Low
Low
High
Low
Low
Pulse
Low
High
Low
Low
Pulse
Low
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested)
Note:
Storage Temperature ........................................................ -20oC to +85oC
Ambient Temperature with Power Applied ...................... -10oC to +70oC
Supply Voltage to Ground Potential (Inputs & VCC Only) ..... -0.5 to +12V
Supply Voltage to Ground Potential (Outputs & D/O Only) . -0.5 to +12V
DC Input Voltage ................................................................. -0.5 to +12V
DC Output Current ........................................................................ 20mA
Power Dissipation....................................................................... 500mW
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions above those indicated in the operational sec-
tions of this specification is not implied. Exposure
to absolute maximum rating conditions for extended
periods may affect reliability.
Recommended Operation Conditions
Table 6. Recommended Operation Conditions
Sym
VBAT
IVR
Description
Battery Pack Voltage
Min
2.0
0.5
0.7VCC
0
Typ
Max
9.6
Units
V
-
Shunt Regulator Operating Current
Input HIGH Voltage
-
20
mA
V
VIH
VIL
-
-
VCC
0.3VCC
-
Input LOW Voltage
V
fOSC
TA
Oscillator Frequency
-
128
-
kHz
OC
Operation Temperature
-10
55
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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DC Electrical Characteristics
Table 5. DC Electrical Characteristics of PT8A9791
Sym
VR
Description
Test Conditions
Min
2.7
Typ
Max
Units
V
Shunt Regulator Voltage
TA = 25OC, IVR = 0.5 - 20mA
-
-
-
3.3
Output HIGH Current - PC Pin
Output HIGH Currentl - SO Pin
-1.5
-2.0
-
-
mA
mA
IOH
VOH = 2.5V
Output HIGH Current -
OSCO Pin
-0.5
-
-
mA
Output LOW Current - PC Pin
Output LOW Current - SO Pin
0.5
1.5
-
-
-
-
mA
mA
IOL
VOL = 0.5V
Output LOW Current -
OSCO Pin
0.3
-
-
-
-
mA
uA
Input HIGH Current - OSCI Pin
10
Input HIGH Current -
IIH
VIH = VCC
Forward, Backward, Left, Right,
OP1, OP2, FBP and LRP Pins
-
-
35
uA
Input LOW Current -
Forw, Back, Left, Right, FBP,
LRP, OP1 and OP2 Pins
-
-
-
-
1
uA
uA
±
IIL
VIL = 0V
Input LOW Current - OSCI Pin
-10
Note: These specifications apply for VCC = 3.0V and TA = 25OC, unless otherwise specified.
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Table 6. DC Electrical Characteristics of PT8A9792
Sym
VR
Description
Test Conditions
Min
2.7
Typ
-
Max
3.3
Units
V
Shunt Regulator Voltage
TA = 25OC, IVR = 0.5 - 20mA
Output HIGH Current -
VO1 and VO2 Pins
-0.1
-0.5
-1.5
0.1
-
-
-
-
-
-
-
-
mA
mA
mA
mA
Output HIGH Current -
OSCO Pin
IOH
VOH = 2.5V
Output HIGH Current -
Forw, Back, Left and Right Pins
Output LOW Current -
VO1 and VO2 Pins
Output LOW Current -
Forw, Back, Left, Right, OP1
and OP2 Pins
IOL
VOL = 0.5V
0.5
-
-
mA
Output LOW Current - OSCO
pin
0.3
-
-
-
-
mA
uA
uA
Input HIGH Current - SI Pin
-
-
35
10
Input HIGH Current -
OSCI, VI1 and VI2 Pins
IIH
VI = VCC
Input HIGH Current - CON Pin
Input LOW Current - SI Pin
-
-
-
-
1
uA
uA
±
-35
-10
Input LOW Current -
OSCI, VI1 and VI2 Pins
IIL
VI = 0V
-
-
-
-
uA
uA
Input LOW Current - CON Pin
1
±
Note: These specifications apply for VCC = 3.0V and TA = 25OC, unless otherwise specified.
AC Electrical Characteristics
Sym
Description
Test Conditions
Min
102
Typ
128
Max
154
Units
kHz
fOSC
PT8A9791
VCC = 3.0V, TA = 0 - 70OC,
Oscillator Frequency
(
(
)
Rf = 200kΩ
fOSC
PT8A9792
VCC = 3.0V, TA = 0 - 70OC,
Oscillator Frequency
102
128
154
kHz
)
Rf = 200kΩ
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Figure 5. Typical Application Circuit 1 of PT8A9791
R7
*
C7
0.02u
K3
D1
K4
K5 K6
A1
9V
D2
D2
D3
L2
22U
LED1
L1
22U
R6
1K
C5
R2
56K
L3
CRYSTAL1
27M
47P
C3
C9
Q1
C8
C1
9014H
100P
10P
47P
0.1U
C2
47P
C4
47P
C6
0.02U
R4
Q2
R5
*
9014H
100
R3
100
D5
D6
D7
D8
R1
200k
K1 K2
SW2
SW1
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Figure 6. Typical Application Circuit of PT8A9792
A1
V C C 1
D 1
C3
68p
C1
10p
R12
430
1N5817
S W 1
B1
6~9v
C17
0.1u
R3
C5
C10
220U
C11
47u
L2
C9
VT1
9014
3.3k
47p
L1
6.8u
0.1u
R2
V C C 1
100k
R1
C4
C2
0.047u
C6
4.7u
3300p
C7
0.1u
VT11
8550
R17
2.2k
VT10
8550
R9
300
R8
300
C15
0.1u
M1
VT5
8050
VT4
8050
Motor1
VT7
8050
VT6
8050
R7
1k
R6
1k
Left
Right
Forward
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Backward
Right
Forward
O P 1
Back
Right
Left
C O N
V C C
VI1
V C C 1
Left
O P 2
3. 0V
O S C O
OSCI
SI
R13
200k
C8
C12
470p
R14
VT12
0.1u
VT13
BD238
R11
300
BD238
R10
300
2.2M
G N D
V O 2
V O 1
VI2
R16
2.2k
C16
R18
2.2k
C14
M 2
Motor2
VT3
8050
R4
Forward
1000p
VT2
8050
PT8A9792
0.1u
1k
R15
R5
1k
VT9
BD237
VT8
BD237
2.2M
C13
Backward
30p
PT0117(10/02)
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Data Sheet
PT8A9791/PT8A9792 Remote Controller
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Notes
Pericom Technology Inc.
Email: support@pti.com.cn
Web Site: www.pti.com.cn, www.pti-ic.com
China:
No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China
Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181
Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong
Tel: (852)-2243 3660 Fax: (852)- 2243 3667
U.S.A.:
2380 Bering Drive, San Jose, California 95131, USA
Tel: (1)-408-435 0800 Fax: (1)-408-435 1100
Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve
design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described
other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from
patent infringement or other rights, of Pericom Technology Incorporation.
PT0117(10/02)
Ver:0
10
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