SM5021A Advanced Analogic Technologies, Inc., SM5021A Datasheet

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SM5021A

Manufacturer Part Number
SM5021A
Description
Manufacturer
Advanced Analogic Technologies, Inc.
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
SM5021AAH-G-EL
Manufacturer:
SEIKONPC
Quantity:
20 000
GENERAL DESCRIPTION
The SM5021A/B is a h i g h p e r f o r m a n c e
infrared remote control encoder utilizing
CMOS technology. Mode A is a signal-key
control and mode B is a multi-key control
during data transmission, supports eight data
key inputs and a LED output to indicate the
status during transmission.
Auto power off function when key is not
pressed to save power, custom codes to
distinguish different products. SM5021
encoder is paired with SM5032 decoder for
more data control applications.
APPLICATIONS
* SM3015 Fan Remote Control
* Audio Remote Control
* Toy Remote Control
* Consumer Products Remote Control
S
三合微科股份有限公司
AM
H
OP
Microelectronics Corp.
Page 1
PIN ASSIGNMENT (TOP VIEW)
FEATURES
* Wide operation voltage range, 2.4V to 6V
* Eight data key control
* Option of signal-key or multi-key control
* Two custom codes to separate products
* Auto power off for saving power
* LED output to indicate transmission status
* Direct infrared LED 38KHz modulation output
* Low power consumption
* Paired with SM5032 decoder
* 16 pin DIP or SO package
Vss
C1
C2
K1
K2
K3
K4
K5
1
2
3
4
5
6
7
8
SM5021A/B
SM5021
16
15
14
13
12
11
10
V.2.0 Mar 8,2002
ENCODER
9
VDD
DOUT
LEDO
OSC2
OSC1
K8
K7
K6

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SM5021A Summary of contents

Page 1

... H Microelectronics Corp GENERAL DESCRIPTION The SM5021A infrared remote control encoder utilizing CMOS technology. Mode signal-key control and mode multi-key control during data transmission, supports eight data key inputs and a LED output to indicate the status during transmission ...

Page 2

S H Microelectronics Corp BLOCK DIAGRAM OSC1 XTAL OSC OSC2 Key In Latcg And Error Detect PIN DESCRIPTION Pin Name C1, Vss OSC1 OSC2 DOUT LEDO ...

Page 3

S H Microelectronics Corp FUNCTION DESCRIPTION A. Encoder Singal Output Format Bit Format SYSCK / 192 Logic 1 is Logic 0 is EMPTY Frame Format There are four frames, encoder generates during sending. Each frame contains four ...

Page 4

S H Microelectronics Corp Transmission Timing Key In t1 OSC LED DOUT * t1: Key pressing > 32ms * t2: Transmission time t3 + 108ms ( Four frame ) over t3 + 108ms, ...

Page 5

... S H Microelectronics Corp SM5021A Transmission Waveform Normal Condition Key 1 Key2 OSC LED DOUT F1 F2 Overlap Condition If more than one key is pressed, transmission stops. Key 1 Key2 OSC LED DOUT ...

Page 6

S H Microelectronics Corp SM5021B Transmission Waveform Normal Condition Key 1 Key2 OSC LED DOUT F1 F2 Overlap Condition If more than one key is pressed, multi-key data transmission. Key 1 t > 32ms Key2 OSC ...

Page 7

S H Microelectronics Corp ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Input Voltage Output Voltage Maximum Power Consumption Operating Temperature Storage Temperature DC ELECTRICAL CHARACTERISTICS Parameter Supply Voltage Stand-by Current Input High Level Input Low Level DOUT Source ...

Page 8

S H Microelectronics Corp APPLICATION CIRCUIT BT JP1 3V JP2 C1 10u C1 VDD C2 DOUT K1 LEDO K2 OSC2 K3 OSC1 Vss K6 SM5021 Page 8 SM5021 ENCODER R2 4.7 Ω D2 ...

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