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DATA SHEET
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.
MOS INTEGRATED CIRCUIT
μ
PD789415, 789416, 789417
8-BIT SINGLE-CHIP MICROCONTROLLER
PRELIMINARY PRODUCT INFORMATION
Document No. U12302EJ1V0PM00 (1st edition)
Date Published June 1997 J
Printed in Japan
1997
The
μ
PD789415,
μ
PD789416, and
μ
PD789417 are
μ
PD789417 sub-series products (LCD drivers) of the 78K/0S
series.
These microcontrollers feature an 8-bit CPU, LCD controller/driver, I/O ports, timers, a serial interface, A/D
converters, a comparator, and interrupt control circuits.
The instruction set of the
μ
PD789415,
μ
PD789416, and
μ
PD789417 is a subset of the 78K/0 series standard
instruction set.
In addition, a flash memory product (
μ
PD78F9418) that can operate within the same voltage range as the mask
ROM models, and a range of related development tools are being developed.
The functions of these microcontrollers are described in the following user’s manual. Refer to this
manual when designing a system based on any of these microcontrollers.
μ
PD789407 and
μ
PD789417 Sub-Series User’s Manual: Under development
FEATURES
ROM and RAM sizes
Item
Data memory
Product name
Internal high-speed
RAM
LCD data RAM
Package
μ
PD789415
12 Kbytes
512
×
8 bits
28
×
8 bits
μ
PD789416
16 Kbytes
μ
PD789417
24 Kbytes
Variable instruction execution time: From high-speed (0.4
μ
s with the main system clock running at 5.0 MHz) to
ultra-low speed (122
μ
s with the subsystem clock running at 32.768 kHz)
43 I/O ports
Serial interface channel: Switchable between three-wire serial I/O and UART modes
LCD controller/driver:
Up to 28 segment signal outputs
Up to 4 common signal outputs
Bias switchable between 1/2 and 1/3
Seven A/D converters with an 10-bit resolution
Six timers:
16-bit timer/counter
Two 8-bit timer/event counters
8-bit timer/counter
Clock timer
Watchdog timer
Power supply voltage V
DD
: 1.8 to 5.5 V
80-pin plastic QFP (14
×
14 mm)
80-pin plastic TQFP (fine pitch)
(12
×
12 mm)
Program memory
(ROM)