FS9952_LP1
Data Sheet
2
,000 counts auto range DMM IC.
Rev. 1.8
Aug 2006
Fortune Semiconductor Corp.
FS9952_LP1-DS-18_EN
CR-004
FS9952_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.
2/27
Rev. 1.8
FS9952_LP1
NOTICE
1. For the best use of FS9952_LP1, please read this data sheet carefully.
2. All application schematics in the data sheet and all component specifications in the
diagram are for reference only. The actual application for the schematic forms,
component specifications and parameters depend on the actual situations to ensure
that it can reach the requirement of design.
3. When use this product to measure the meter, it should be take care of the protection
for over-voltage and over-current on input ends, lest the product and the meter causes
damaged under over-voltage and over-current.
4. “Auto Power Off” of the product is a sleep status. In sleep status, the system still
consumes little current (less than 1μA). It is better to cut off the power if not use for
a long time.
5. FS9952_LP1 is a high accuracy and multifunctional ADC with microprocessor.
When apply the product, the anti-interfere problem should be considered during the
PCB design and components layout to reduce external and internal interferes and get
the best effect.
6. This version is updated in August 2006. It may take a change for some parameters
and schematics according to the improvement and promotion of the product. If so, it
will not be noted actively. For any question, please contact our company directly.
Fortune Semiconductor Corp.
3/27
Rev. 1.8
FS9952_LP1
CONTENT
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Introduction
...................................................................................................................................................................................................... 5
Features
.............................................................................................................................................................................................................. 5
User Development Function
.................................................................................................................................................................. 6
Measurable Modes
....................................................................................................................................................................................... 6
Application Field
.......................................................................................................................................................................................... 6
Block Diagram
............................................................................................................................................................................................... 7
Pin Diagram
..................................................................................................................................................................................................... 7
Pin Description
.............................................................................................................................................................................................. 7
Dice Pad Layout & Pad Coordinate
.................................................................................................................................................. 7
Technical Specification (VDD=3V, Ta=25℃)
.......................................................................................................................... 7
Measurement Mode Select
...................................................................................................................................................................... 7
Keys Definition
.............................................................................................................................................................................................. 7
Other Functions
............................................................................................................................................................................................. 7
LCD Display
................................................................................................................................................................................................... 7
Application Description
............................................................................................................................................................................ 7
Package Outline
............................................................................................................................................................................................. 7
Ordering Information
................................................................................................................................................................................. 7
R
EVISION
H
ISTORY
..................................................................................................................................................................................... 7
Fortune Semiconductor Corp.
4/27
Rev. 1.8
FS9952_LP1
1. Introduction
FS9952_LP1
is a high performance, low power consumption and
3½
digits (1999 Counts) Analog to Digital
Converter that built-in the microprocessor (ADC+MCU). It includes the 8 bits microprocessor, low noise and
high stability OPAMP, AC rectifier OPAMP, voltage promotion and regulated voltage power, high regulated
bandgap, auto measurement switch and function control circuit, buzzer driver circuit, clock oscillation circuit,
backlight display control/driver circuit, LCD display driver circuit and so on.
With the microprocessor,
FS9952_LP1
can do the logic function control when goes through the I/O ports.
By using the codes of MEA1〜MEA4 pins, it can assemble various measurement functions, as well as construct
fully auto measurement meter and fully manual measurement meter through the code settings. For the settings of
Range, Select, Manual Hold, Max Hold, BLCTR and Power ON/OFF
keys, you can act the measurement mode
select, function switch, reading hold, backlight display, power on/off and so on functions by triggering these
keys.
FS9952_LP1 has the AC/DC and
℉/℃
power on first select function that is decided by SELECT1 status.
This is for the convenience of user to enter the required measurement mode during power on.
With regard to the auto power off function, when there is no action within 15 minutes on the switch or keys
of the meter, the system will enter the sleep mode automatically to save the power. If it is not necessary to use
the auto power off function in the process of using the meter, it can be cancelled during using.
FS9952_LP1 is made by large integrated circuit technology so that rise greatly up the reliability of the
product, and make the design be simple and the volume be small. With small operating voltage and low power
consumption, it is convenient to use the power supply of battery, especially suitable for the use on the palm
mode meter.
FS9952_LP1 is truly a microprocessor-embedded and multifunctional measuring ADC so that just less
external components added, it can be a high accuracy, lots functions and low cost measuring meter.
2.
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
Features
Max. Display:
1999.
Conversion Rate: 3 times/sec.
Measurement Modes: Fully Auto Measurement/Fully Manual Measurement.
The Negative Indication: Auto.
Temperature Measurement (℃) and (
℉):
Switch by “SELECT” key.
Power Voltage Range: 2.4V-3.6V.
Chip Power Consumption:
≤
6mW .
Low Battery Warning: Approx. 2.4V.
Buzzer Driver Circuit (Frequency is about 2.7kHz).
Embedded OPAMP for AC/DC conversion.
Function Keys: Range / Manual Hold /Max Hold/ Select / BLCTR.
Peak Value Hold Function. Apply to
Clinch Meter and so on field.
Unit Symbol and Backlight Display.
Auto Power-off (can be cancelled in using).
5/27
Fortune Semiconductor Corp.
Rev. 1.8
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