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Technologies for Tomorrow
Prolific
PL8331
The PL8331 series of ultralow power mixed-signal
processors consist of several devices featuring
different sets of peripherals targeted for energy
meter applications. They integrate analog front
end and fixed function DSP solution with an en-
hanced 8052 MCU core, RTC and LCD driver in a
single part. The measurement core includes ac-
tive, reactive, apparent energy calculations, volt-
age, current RMS, and frequency measurements.
This information can be used as energy billing and
any necessary application. Also included is a built-
in 16-bit timer, LCD segment drive capability and
hardware multiplier.
The PL8331 integrates three PGAs with gain set-
tings from 1x to 32x. Three 24-bit sigma-deltas A/
D converters guarantee precision in captured data
and enough needed resolution.
The microprocessor functionality includes a single
-cycle 8052 core, a real-time clock, 2UARTs, and
an SPI, I
2
C and JTAG interface. It reduces the
program memory size requirement and makes it
easy to integrate complicated designs.
The programming is very easy and supports differ-
ent (= multiple) ways. (SPI or JTAG)
No external voltage is needed for programming.
PL8331
Technologies for Tomorrow
PROLIFIC TECHNOLOGIES INC.
Power Meter Solutions – Product series
PROLIFIC
TECHNOLOGIES INC.
Prolific Technologies Inc.
No.10-2, Li Hsing First Road,
Science-Based Park,
Tel: 886-3-578-2011. Ext- 3637
Fax: 886-3-578-2022
E-mail: ranjit-dash@prolific.com.tw
PL8331
Technologies for Tomorrow
MICROPROCESSOR FEATURES
GENERAL FEATURES
•
Wide supply voltage range: 2.4V to 5V
•
Ultralow power consumption
•
Normal mode:
•
Total: 2.2mA @ 3V
•
Sleep Mode: 3uA
•
RTC only: 1.1uA
•
Multi mode power saving function
•
Internal switch between regulated and battery inputs
•
Compatible with CTs, resistive shunts and Rogowski
Coil sensors
●
•
8052-based core
•
Single-cycle 8MIPS (Peak)
•
32.768 kHz external crystal with built in PLL
•
Accurate RTC for time-of-use functions
•
H/W watchdog timer (WDT)
•
External interrupt sources
•
SPI / I C interface for
2
EEPROM
•
IrDa/UART/IR I/F for AMR
•
Flash security
•
16-Bit timer
•
Wake-up from I/O, temperature change, or UART
•
64kB flash memory, 2k bytes RAM
•
Supply voltage supervisor/monitor with built in SAR ADC
•
Serial on board programming/debugging
ENERGY MEASUREMENT FEATURES
•
Digital temperature compensation
•
Wake-up from standby mode in less than 5us
•
Reference: 1.2V (20ppm/℃ )
•
Operation temperature range: -40℃ to +85℃
•
64-LQFP(7x7) package
ADC FEATURES
•
Exceeds IEC62053 / ANSI C12.20 standards
•
Digital signal processing (DSP) provide high accuracy
active (Watt), reactive (VAR), and apparent energy (VA)
measurement
2000 to 1 @25℃
•
Three second-order, 24-bit, delta-sigma Analog-to-
Digital Converters
•
Three differential input PGA front ADC
(Gain=1,2,4,8,16,24,32)
•
< 0.1% Error on active energy over a Dynamic Range of
•
Line voltage and frequency measurements
•
Phase compensation
•
10 bit SAR ADC with temperature sensor
LCD FEATURES
PROLIFIC
TECHNOLOGIES INC.
Prolific Technologies Inc.
No.10-2, Li Hsing First Road,
Science-Based Park,
Hsin-Chu City, 300
•
Up to 4x25 segment
Technologies
for Tomorrow
Tel: 886-3-578-2011. Ext- 3637
Fax: 886-3-578-2022
E-mail: ranjit-dash@prolific.com.tw
Power technology
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