P
Electricity Meter LCD MCU
This series of single-phase
electricity meter LCD
microcontrollers simplifies
meter design and reduces
system component count. It has
a dedicated-measurement front
end with a 4-channel, 24-bit
Delta Sigma ADC plus a powercalculation engine to support
precise measurement for 2-wire
and 3-wire single-phase
electricity meter designs.
Moreover, additional powermanagement features such as
zero-crossing detection and
anti-tampering features reduce
system component count.
Embedded LCD support and
various serial interfaces
for connection to any
communication subsystem
enable flexible and extensible
meter designs.
78K0/Lx3-M 8-bit Single-Phase Electricity Meter LCD MCU
Key Features
> High-performance 8-bit 78K0 flash microcontroller
> Dedicated 2-wire or 3-wire single-phase electricity meter analog front end
- 4 channels, 24-bit Delta Sigma ADC
- Hardware active power, reactive power and apparent power-calculation engines
- Power management engines for zero-crossing detection, peak detection and more
- Anti-tampering detection
- Support for Rogoski coil
> Up to 60 KB flash memory and up to 2 KB SRAM
> Real-time counter with hardware calibration
- Dedicated second, minute, hour, etc. registers to simplify time stamping
- Hardware calibration to compensate variance of crystal
- Independent voltage support
> Multiple 16-bit and 8-bit timers
> Multiple channels of 10-bit ADC
> Various CSI and UART interfaces
Key Benefits
> Dedicated single-phase electricity meter analog front end to simplify meter design
> Dedicated power-calculation engine to reduce software overhead
> Sophisticated real-time counter for accurate time tracking
www.am.necel.com
Electricity Meter LCD Microcontroller
78K0/Lx3-M 8-bit Single-Phase Electricity Meter LCD MCU
Target Applications
NEC Electronics America, Inc.
2880 Scott Boulevard
Santa Clara, CA 95050-2554
1-408-588-6000
www.am.necel.com
> Single-phase electricity meter
> Electricity measurement for industrial
Development Tools
> Comprehensive software development tools
NEC Electronics Corporation
1753 Shimonumabe, Nakahara-Ku
Kawasaki, Kanagawa
211-8668, Japan
81-44-435-5111
www.necel.com
NEC Electronics (Europe) GmbH
Arcadiastr. 10, 40472
Dusseldorf, Germany
49-211-6503-0
www.eu.necel.com
- Compiler, linker, assembler and debugger
> Comprehensive hardware development tools
- Low-cost debugger (MINICUBE2)
• Flash programming during development
• System debugging during development
- Stand-alone flash programmer (PG-FP5)
• Production flash programming
Ordering Information (μPD78Fxxxxyy-zzz-AX)
Flash
Memory
RAM
xxxx
Body Part Number
yy-zzz
Package Suffix
RoHS Plating
NiPdAu
GB-GAH
16 KB
.75 KB
8052
64-pin
(10x10 mm)
GB-GAH
32 KB
1 KB
8053
64-pin
(10x10 mm)
GC-UEU
48 KB
2 KB
8054
100-pin
(14x14 mm)
GC-UEU
60 KB
2 KB
8055
100-pin
(14x14 mm)
For device or tools availability and pricing, please contact
your NEC Electronics America sales representative.
ALL INFORMATION HEREIN IS PROVIDED “AS IS” WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED.
NEC ELECTRONICS (NEC) DISCLAIMS ALL SUCH
WARRANTIES, INCLUDING, WITHOUT LIMITATION,
MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT, OR ARISING FROM A
COURSE OF DEALING, USAGE, OR TRADE PRACTICE. NEC
SHALL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,
CONSEQUENTIAL, OR INCIDENTAL DAMAGES INCLUDING,
WITHOUT LIMITATION, LOST PROFITS OR REVENUES,
COSTS OF REPLACEMENT GOODS OR DAMAGES
RESULTING FROM USE OF OR RELIANCE ON THE
INFORMATION PRESENT, EVEN IF NEC OR ITS SUPPLIERS
HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
© January 2010 NEC Electronics America, Inc.
All rights reserved.
Document No. U20197EU1V0PB00
-AX