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PDF ( 数据手册 , 数据表 ) SC73C1402C

零件编号 SC73C1402C
描述 4BIT MCU FOR REMOTE CONTROLLER
制造商 Silan Microelectronics
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SC73C1402C 数据手册, 描述, 功能
SC73C1402
4-BIT MCU FOR REMOTE CONTROLLER(MASK TYPE)
DESCRIPTION
SC73C1402 is one of Silan’s 4-bit CMOS single-chip micro-
controllers for infrared remote control transmitters (IRCTs). It can
be implemented in various IRCT circuits by mask option.
SOP-20-300-1.27
FEATURES
* Operating voltage range: (2.0 ~ 4.0V)
Low static power consumption (<1uA)
SOP-20-375-1.27
* Program memory: 2Kx 9 bits
The last 1K areas can also be used as data table
* Data memory (RAM): 16 x 4 bits
* Timer/counter: 10~15 bits
SSOP-20-300-0.65
* 20 I/O ports, where there is a 4-bit input, two 4-bit outputs and
two 4-bit programmable input/output ports(P53 is output but ORDERING INFORMATION
not used as keypress).
* Oscillator frequency (fosc):
Device
Package
300KHz~2MHz or 2MHz~6MHz selectable by mask option
SC73C1402
SOP-24-375-1.27
* Operating frequency (fmain):
SC73C1402A SOP-20-300-1.27
fmain=fosc (when fosc in the range of 300KHz~2MHz)
SC73C1402B SSOP-20-300-0.65
fmain=fosc/8 (when fosc in the range of 2MHz~6MHz)
* Carrier frequency: fmain/12
* Carrier duty: 1/2 or 1/3 duty selectable by program
* Instruction cycle: 5/fmain
SC73C1402C
SC73C1402D
SC73C1402E
SOP-20-375-1.27
DIE
SSOP-24-300-0.65
* Handles various user’s codes, repeat key, persist-key press APPLICATIONS
www.DataSheet4Ua.ncdommany other functions
* Power on reset
* Supports voltage-drop detection
* Supports 56 keys in 20-pin package, and 80 keys in 24-pin
package.
* Infrared remote control devices, such
as TV, Video Cassette Recorder, VTR,
laser phonograph and acoustics
remote controllers.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.12.19
Page 1 of 20







SC73C1402C pdf, 数据表
SC73C1402
17. POC circuit
The POC circuit monitors the power supply voltage and applies an internal reset to the micro-controller.
The POC circuit has the following functions:
•Generates an internal reset signal when VDD VPOC note1.
•Cancels an internal reset signal when VDD > VPOC.
Here, VDD: power supply voltage, VPOC: POC detection voltage (including VPOC1 & VPOC2).
VDD
3.6V
2.0V
VPOC1
VPOC2
Operating ambient temperature Tamb=-10°C~+70°C
POC detection @powered on, VPOC1 =1.8V~2.0V
POC detection @voltage droped, VPOC2 =1.2V~1.6V
0V
Internal reset signal
1
Reset
Operation mode
Note 2
Note 3
Notes1. VPOC is different in different conditions. When powered on, the VPOC value is VPOC1( VPOC1=1.8V~2.0V);
when working, VPOC is approximately VPOC2 in normal conditions(VPOC2=1.2V~1.6V).
2. Actually, there is a short oscillation stabilization wait time before the circuit is in operation mode.
The oscillation stabilization wait time is about 216/fmain.
3. The POC circuit generates an internal reset signal when the power supply voltage has fallen.
18. Instruction cycle
Instructions and internal operations are executed in sync with the main clock. The minimum unit of
instruction is called the instruction cycle. SC73C1402 has 1 and 2-cycle OP code instructions.
An instruction cycle consists of 5 states (STCLK1 – STCLK5). Each state consists of 1 main clock.
www.DataSheet4UT.hcoemrefore, the instruction cycle time is 5/fmain [s].
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.12.19
Page 8 of 20







SC73C1402C equivalent, schematic
CHIP TOPOGRAPHY
SC73C1402
Chip size: 1.15X1.15(mm2)
Note: The substrate is connected with GND.
www.DataShPeAetD4UC.coOmORDINATES
Pad No.
1
2
3
4
5
6
7
8
9
10
11
12
Symbol
VDD
RSTN
XT1
XT2
P00
P01
P02
P03
P10
P11
P12
P13
X
-462.00
-440.40
-320.40
-200.40
159.60
279.60
462.00
462.00
462.00
462.00
462.00
462.00
Y
-314.35
-462.00
-462.00
-462.00
-462.00
-462.00
-406.35
-290.35
-174.35
-58.35
57.65
173.65
Pad No.
13
14
15
16
17
18
19
20
21
22
23
24
Symbol
P20
P21
P22
P23
P30
P31
P32
P33
P52
P53
P51
GND
X
462.00
462.00
283.30
163.30
43.30
-76.70
-196.70
-316.70
-462.00
-462.00
-462.00
-462.00
Y
289.65
405.65
460.15
460.15
460.15
460.15
460.15
460.15
165.65
45.65
-74.35
-194.35
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.12.19
Page 16 of 20










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