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1997
PRELIMINARY PRODUCT INFORMATION
MOS INTEGRATED CIRCUIT
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PD780973(A)
8-BIT SINGLE-CHIP MICROCONTROLLER
Document No. U12759EJ1V0PM00 (1st edition)
Date Published August 1997 N
Printed in Japan
The information contained in this document is being issued in advance of the production cycle for the
device. The parameters for the device may change before final production or NEC Corporation, at its own
discretion, may withdraw the device prior to its production.
DESCRIPTION
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PD780973(A) is a product in the
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PD780973 subseries within the 78K/0 series, which incorporates meter controller/
driver, sound generator, LCD controller/driver, 8-bit resolution A/D converter, timer, serial interface, interrupt functions
and many other peripheral hardwares.
A flash memory product capable of operating in the same power supply voltage range as the mask ROM product,
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PD78F0974, and other development tools are being developed.
For the details of functional description, refer to the following user’s manual.
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PD780973(A), 78F0974 User’s Manual
78K/0 Series User’s Manual Instructions : U12326E
: to be published soon
FEATURES
On-chip meter controller/driver: PWM output (9-bit resolution): 16
On-chip sound generator: 1 channel
On-chip ROM and RAM
Internal ROM: 24 Kbytes
Internal high-speed RAM: 768 bytes
LCD display RAM: 20
¥
4 bits
On-chip EEPROM
TM
(readable/writable by software): 256 bytes
Instruction execution time can be varied from high speed (0.24
m
s) to low speed (3.81
m
s)
I/O ports: 56 (including segment signal output dual-function pins)
8-bit resolution A/D converter: 5 channels
Serial interface: 2 channels
Timer: 6 channels
Supply voltage: V
DD
= 4.5 to 5.5 V
APPLICATION FIELD
Automotive meter (dashboard) control