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DATA SHEET
µ
PD780851(A), 780852(A)
8-BIT SINGLE-CHIP MICROCONTROLLERS
MOS INTEGRATED CIRCUIT
The
µ
PD780851(A) and 780852(A) are products of the
µ
PD780852 Subseries in the 78K/0 Series.
The
µ
PD780851(A) and 780852(A) include a meter controller/driver, sound generator, LCD controller/driver, 8-bit
resolution A/D converter, timer, serial interface, interrupt function, and various other peripheral hardware.
A flash memory version, the
µ
PD78F0852, which can operate in the same power supply voltage range as the
mask ROM version, and various development tools are also available.
Detailed function descriptions are provided in the following user's manuals. Be sure to read them before
designing.
µ
PD780852 Subseries User's Manual:
78K/0 Series User's Manual - Instruction:
U14581E
U12326E
FEATURES
Meter controller/driver: 16 PWM outputs (8-bit resolution)
Sound generator: 1 channel
Internal ROM and RAM
Item
Program Memory
(Internal ROM)
Data Memory
Internal High-Speed
RAM
1024 bytes
Internal Expansion
RAM
512 bytes
LCD Display RAM
20
×
4 bits
Part Number
µ
PD780851(A)
µ
PD780852(A)
32 KB
40 KB
Minimum instruction execution time can be changed from high-speed (0.24
µ
s) to low-speed (3.81
µ
s)
I/O ports: 56 (Including segment signal output alternate function pins)
8-bit resolution A/D converter: 5 channels
Serial interface: 3 channels
Timer: 6 channels
Supply voltage: V
DD
= 4.0 to 5.5 V
APPLICATIONS
Automobile meter (dashboard) control
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. U14577EJ1V0DS00 (1st edition)
Date Published October 2001 NS CP(K)
Printed in Japan
The mark
shows major revised points.
2000
µ
PD780851(A), 780852(A)
78K/0 SERIES LINEUP
The products in the 78K/0 Series are listed below. The names enclosed in boxes are subseries names.
Products in mass production
Products under development
Y subseries products are compatible with I
2
C bus.
Control
µ
PD78075B
100-pin
100-pin
100-pin
100-pin
80-pin
80-pin
80-pin
80-pin
64-pin
64-pin
64-pin
64-pin
64-pin
42/44-pin
µ
PD78078 with reduced EMI noise
µ
PD78078Y
µ
PD78070AY
µ
PD780018AY
µ
PD780058Y
µ
PD78058FY
µ
PD78054Y
µ
PD780078Y
µ
PD780034AY
µ
PD780024AY
µ
PD78018FY
µ
PD78054 with timer added and enhanced external interface
ROMless version of
µ
PD78078
µ
PD78078
µ
PD78070A
µ
PD780058
µ
PD78058F
µ
PD78054
µ
PD780065
µ
PD780078
µ
PD780034A
µ
PD780024A
µ
PD78014H
µ
PD78018F
µ
PD78083
Inverter control
µ
PD78078Y with enhanced serial I/O and limited functions
µ
PD78054 with enhanced serial I/O
µ
PD78054 with reduced EMI noise
µ
PD78018F with UART and D/A added, and enhanced I/O
µ
PD780024A with expanded RAM
µ
PD780034A with timer added and enhanced serial I/O
µ
PD780024A with enhanced A/D
µ
PD78018F with enhanced serial I/O
µ
PD78018F with reduced EMI noise
Basic subseries for control
On-chip UART and capable of low voltage operation (1.8 V)
On-chip inverter controller and UART. Reduced EMI noise.
64-pin
µ
PD780988
VFD drive
100-pin
80-pin
80-pin
78K/0
Series
80-pin
µ
PD780208
µ
PD780232
µ
PD78044H
µ
PD78044F
LCD drive
µ
PD780338
µ
PD78044F with enhanced I/O and VFD C/D. Display output total: 53
For panel control. On-chip VFD C/D. Display output total: 53
µ
PD78044F with N-ch open drain I/O added. Display output total: 34
Basic subseries for driving VFD. Display output total: 34
120-pin
120-pin
120-pin
100-pin
100-pin
100-pin
µ
PD780308 with enhanced display function and timer. Segment signal output: 40 pins max.
µ
PD780308 with enhanced display function and timer. Segment signal output: 32 pins max.
µ
PD780308 with enhanced display function and timer. Segment signal output: 24 pins max.
µ
PD780308Y
µ
PD78064Y
µ
PD78064 with enhanced SIO and expanded ROM, RAM
µ
PD78064 with reduced EMI noise
Basic subseries for driving LCD. On-chip UART.
µ
PD780328
µ
PD780318
µ
PD780308
µ
PD78064B
µ
PD78064
µ
PD780948
µ
PD78098B
µ
PD780702Y
µ
PD780703Y
Bus interface supported
100-pin
80-pin
80-pin
80-pin
80-pin
64-pin
On-chip DCAN controller
µ
PD78054 with IEBus
TM
controller added
On-chip IEBus controller
On-chip DCAN controller
On-chip J1850 (CLASS2) controller
Specialized for DCAN controller function
µ
PD780816
Meter control
µ
PD780833Y
100-pin
80-pin
80-pin
µ
PD780958
µ
PD780852
µ
PD780828B
For industrial meter control
On-chip controller/driver for automobile meter drive
For automobile meter drive. On-chip DCAN controller
Remark
VFD (Vacuum Fluorescent Display) is referred to as FIP
documents, but the functions of the two are the same.
TM
(Fluorescent Indicator Panel) in some
Data Sheet U14577EJ1V0DS
3
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