FS9721-LP1
Taipei Office：
28F, No.27, Sec. 2, Zhongzheng E. Rd.,
Danshui Town, Taipei County 251, Taiwan
Tel.：886-2-28094742
Fax：886-2-28094874
http://www.fsc.com.tw
This manual contains new product information.
Fortune Semiconductor Corporation
reserves the rights to modify the
product specification without further notice. No liability is assumed by
Fortune Semiconductor Corporation
as a result of the use of this product. No
rights under any patent accompany the sale of the product.
Fortune Semiconductor
Corp
2/35
Rev. 1..9
FS9721-LP1
Table of Contents
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Description....................................................................................................................................4
Features.........................................................................................................................................4
Measurable Modes .......................................................................................................................4
Application....................................................................................................................................5
Block Diagram..............................................................................................................................5
Pin Diagram..................................................................................................................................6
Pin Description .............................................................................................................................6
Dice Pad Layout & Pad Coordinate ...........................................................................................9
Technical Specification ............................................................................................................10
Measurement Mode Selection................................................................................................12
Keys Definition........................................................................................................................14
Other Functions ......................................................................................................................14
LCD Display............................................................................................................................16
Application Description .........................................................................................................17
Package Outline ......................................................................................................................30
Demo Board ............................................................................................................................31
Ordering Information ............................................................................................................34
Revision History......................................................................................................................35
Fortune Semiconductor
Corp
3/35
Rev. 1..9
FS9721-LP1
1.
Description
FS9721_LP1 is a high performance, low power consumption, 3
3
/4 digits (4000 Counts) Analog/Digital
Converter (ADC+MCU) that is embedded microprocessor. It contains 8 bit microprocessor, low noise and
high stability operation amplifier, AC conmutation operation amplifier, voltage promotion and voltage
regulated power source, high stability bandgap, auto measurement switch and function control circuit, buzzer
driver circuit, clock oscillator circuit, Backlight display control circuit, LCD display driver circuit and so on.
Due to FS9721_LP1 is embedded microprocessor so that it can control the logic function during passing
I/O. Measurement functions can be combined differently by using MEA1〜MEA4 pins and CAP pin code;
through the setting to the code can build the fully auto and manual measurement meter. There are Range,
Select, Hold, Rel, BLCTR, Hz/Duty and Reset keys so that you can fulfil measurement selection, functions
switch, data hold, Backlight display, relative value, frequency and duty cycle measurement, reset and so on
functions through these keys. FS9721_LP1 also has auto power-off function. If there is no any action in 15
minutes for the switch or keys of the meter, the system will enter the sleeping mode to save power.
FS9721_LP1 is embedded display driver circuit that is designed for driving LCD. FS9721_LP1 is
manufacted by large intergrated circuit technology that has rised hugely the reliability of product and made the
design be easy and the volume be small; the system takes 3V power source of low consumption for battery
supply that is fit especially to the palm mode meter. FS9721_LP1 is a multi-measurement AC/DC converter
that embedded the microprocessor. Only less addition of external components, you can constitute a high
accuracy, mult-function and low cost meter.
2. Features
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
Maximum Display: 4000 (
3 /
4
digits
).
Converter Rate: 3 times/sec.
Measurement Mode: Fully Auto/Manual.
The Negative Instruction: Auto.
Power Voltage Range: 2.4V〜3.6V.
Chip Power Consumption:
≤6mW.
Low Battery Warning: About 2.4 V.
Buzzer Driver Circuit (Frequency is about 2.7kHz).
Embedded OPAMP for DC/AC switch.
Function Keys: Range, Hold, Rel, Select, BLCTR, Hz/Duty, Reset.
Unit Symbol and Backlight Display.
Auto Power-off.
3
3. Measurable Modes
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
DC Voltage:
400.0mV,4.000V,40.00V,400.0V,1000V
.
AC Voltage:
400.0mV,4.000V,40.00V,400.0V,1000V
.
DC:
400.0μA / 4000μA,40.00mA / 400.0mA,10.00A
.
AC:
400.0μA / 4000μA,40.00mA / 400.0mA,10.00A
.
Resistance:
400.0Ω,4.000kΩ,40.00kΩ,400.0kΩ,4.000MΩ,40.00MΩ
.
Capacitance:
5.120nF,51.20nF,512.0nF,5.120μF,51.20μF,200.0μF(30Sec)
.
Frequency:
9.999Hz,99.99Hz,999.9Hz,9.999kHz,99.99kHz,999.9kHz,9.999MHz.
Duty Cycle: 0.1%〜99.9%.
Diode: 0V〜1.5 V.
Short Circuit Testing: Sound when lower than 50Ω.
4/35
Rev. 1..9
Fortune Semiconductor
Corp
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