Datenblatt-pdf.com


8A978P Schematic ( PDF Datasheet ) - Pericom

Teilenummer 8A978P
Beschreibung PT8A978P
Hersteller Pericom
Logo Pericom Logo 




Gesamt 12 Seiten
8A978P Datasheet, Funktion
Data Sheet
PT8A977P/977W/978P/978LW
5-Function Remote Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features
General Description
• PT8A977P/977W works as encoder and
PT8A978P/978LW works as decoder
• Five pins for five control functions
• Operating power-supply voltage: 2.5V to 5.0V
(977P, 977W, 978P), 2.0V to 5.0V (978LW)
• Auto-power-off if no press on any button in 8s or
continuously press on any button over 4 minues
• Press on any button as wake up (977P, 977W)
• Manual-power-off with OFF button
• One output pin used for external power control (977P,
977W)
• On-chip oscillator with an external resistor
• On-chip reversing amplifiers (978P, 978LW)
• Low operating current
• Few external components needed
• Package: 14-pin DIP, 14-pin SOIC, 16-pin DIP
and 16-pin SOIC
The PTA977P (or 977W) and PT8A978P (or 978LW)
provide a complete control functions to the remote-
controlled toy. The PT8A977P/977W has five input
pins corresponding with the five function buttons i.e,
forward, backward, rightward, leftward and turbo. The
encoding circuit in the PT8A977P/977W sends digital
codes to the two output pins SO and SC. The digital
codes correspond to the definite function buttons or
their combinations. The SO and SC outputs are used
in wireless and infra-red applications respectively.
The PT8A978P (or 978LW) has five output pins
corresponding with the five actions. The received
signals are amplified by the three-stage amplifier, and
then the appropriate amplified signals are sampled,
fault-tolerantly checked and decoded to control the
actions of the remote-controlled toy.
Ordering Information
Par t No.
Package
PT8A977P
14-pin DIP
PT8A977W
14-pin SOIC
PT8A978P
16-pin DIP
PT8A978LW
16-pin SOIC
There is an internal oscillator in the PT8A977P/977W
and 978P/978LW respectively. By adding an external
resistor conveniently, the oscillator will be
constructed. The oscillator frequency can be adjusted
by the external resistor. The relative error between
the frequencies of the two on-chip oscillators in the
PT8A977P/977W and PT8A978P/978LW must be
less than ±25%.
The auto-power-off function is achieved by an internal
counter. The PC output is used to control on/off state
of the external power supply. Pressing OFF button
can also shut down the power supply. Press on any
function button will wake up the chip promptly.
PT0074(10/01)
1
Ver:1
Free Datasheet http://www.datasheet-pdf.com/






8A978P Datasheet, Funktion
Data Sheet
PT8A977P/977W/978P/978LW
5-Function Remote Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested)
Note:
Storage Temperature ........................................................ -25oC to +85oC Stresses greater than those listed under MAXIMUM
Ambient Temperature with Power Applied ...................... -10oC to +40oC RATINGS may cause permanent damage to the
Supply Voltage to Ground Potential (Inputs & V Only) .... -0.5 to +6.0V
CC
device. This is a stress rating only and functional
Supply Voltage to Ground Potential (Outputs & D/O Only) -0.5 to +6.0V operation of the device at these or any other condi-
DC Input Voltage ................................................................ -0.5 to +6.0V tions above those indicated in the operational sec-
DC Output Current ........................................................................ 20mA tions of this specification is not implied. Exposure
Power Dissipation ....................................................................... 500mW to absolute maximum rating conditions for ex-
tended periods may affect reliability.
DC Electrical Charateristics
DC Electrical Charateristics of 977P/977W
Parameters
Description
Test Condition
VCC Operating Voltage
ICC Supply Current
Output unloaded
ISTB Stand-by Current
OFF State
VIL Input Low Voltage
Guaranteed Logic LOW level
VIH Input High Voltage
Guaranteed Logic HIGH level
IIL
Input Low Current Pin 1, 4, 5, 6, 13, 14
V = 0V, ON state
IL
IIH
Input High Current Pin 1, 4, 5, 6, 13, 14
VIH = 4V, ON state
II Input Current
Pin 12
VIH = 0 ~ 4V, ON state
IOL Output Low Current
VOUT = 0.5 V
Pin 7, 8, 10
IOH Output High Current
Pin 11
VOUT = 3.5 V
VOUT = 3.5 V
Note: Over the Operating Rating, 0°C £ T £ 70°C, V = 4V
A CC
Min.
2.5
3.0
150
-1.0
-200
Type
4.0
DC Electrical Charateristics of 978P/978LW
Parameters
Description
Test Condition
VCC Operating Voltage - 978P
Operating Voltage - 978LW
ICC Supply Current
ISTB Stand-by Current
VIL Input Low Voltage
VIH Input High Voltage
IIL Input Low Current Pin 3, 8, 9
Input High Current Pin 3
IIH
Input High Current Pin 8, 9
II Input Current
Pin 14, 16
IOL
Pin 1, 5, 15
Output Low Current
Pin 6, 7, 10, 11, 12
Pin 1, 5, 15
IOH Output High Current
Pin 6, 7, 10, 11, 12
Output unloaded
OFF State
Guaranteed Logic LOW level
Guaranteed Logic HIGH level
VIL = 0V, ON state
V = 4V, ON state
IH
VIH = 4V, ON state
VIH = 0 ~ 4V, ON state
VOUT = 0.5 V
VOUT = 0.5 V
VOUT = 3.5 V
VOUT = 3.5 V
Note: Over the Operating Rating, 0°C £ TA £ 70°C, VCC = 4V
Min.
2.5
2.0
3.0
200
2
-200
-500
Type
4.0
Max.
5.0
100
5
0.8
-60
10
±10
- 800
Units
V
uA
uA
V
V
uA
uA
uA
uA
mA
uA
Max.
5.0
5.0
1
10
0.8
-60
60
10
±10
850
- 850
Units
V
V
mA
uA
V
V
uA
uA
uA
uA
uA
mA
uA
uA
PT0074(10/01)
6
Ver:1
Free Datasheet http://www.datasheet-pdf.com/

6 Page









8A978P pdf, datenblatt
Data Sheet
PT8A977P/977W/978P/978LW
5-Function Remote Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Notes
Pericom Technology Inc.
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.
PT0074(10/01)
12
Ver:1
Free Datasheet http://www.datasheet-pdf.com/

12 Page





SeitenGesamt 12 Seiten
PDF Download[ 8A978P Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
8A978REMOTE CONTROLLERETC
ETC
8A978PPT8A978PPericom
Pericom

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche