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UPD789324 fiches techniques PDF

NEC - 8-BIT SINGLE-CHIP MICROCONTROLLER

Numéro de référence UPD789324
Description 8-BIT SINGLE-CHIP MICROCONTROLLER
Fabricant NEC 
Logo NEC 





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UPD789324 fiche technique
PRELIMINARY PRODUCT INFORMATION
MOS INTEGRATED CIRCUIT
µPD789322,789324,789326,789327
8-BIT SINGLE-CHIP MICROCONTROLLER
The µPD789322, 789324, 789326, and 789327 are µPD789327 Subseries (designed for remote controller with on-
chip LCD) product in the 78K/0S Series.
In addition to an 8-bit CPU, they have on-chip hardware for a remote controller with on-chip LCD, Including a LCD
controller/driver, a serial interface, a key return signal detection circuit, and timers with carrier generator that can
easily output waveforms for infrared remote control.
The µPD78F9328, a product with on-chip flash memory which can operate on the same supply voltage as for
masked ROM products and various development tools are also under development.
Detailed function descriptions are provided in the following user’s manuals. Be sure to read them before
designing.
µPD789327, 789467 Subseries User’s Manual: To be prepared
78K/0S Series User’s Manual Instructions: U11047E
FEATURES
• ROM and RAM size
Item Program memory
Data Memory
Packege
Part Number
(ROM)
Internal High-Speed LCD display RAM
RAM
µPD789322
µPD789324
4 K bytes
8 K bytes
256 bytes
24 bytes
52-pin plastic LQFP
(10×10 mm)
µPD789326
16 K bytes
512 bytes
µPD789327
24 K bytes
• Variable minimum instruction execution time: High speed (0.4 µs: @5.0-MHz operation with main system clock),
low speed (1.6 µs: @5.0-MHz operation with main system clock), and ultra low speed (122 µs: @32.768-kHz
operation with subsystem clock)
• I/O ports: 21
• Serial interface (3-wire serial I/O mode): 1 channel
• LCD controller/driver
Segment signals: 24
Common signals: 4
• Timer: 4 channels
• Supply voltage: VDD = 1.8 to 5.5 V
APPLICATIONS
Remote-control devices, healthcare equipment, etc.
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.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. U14673EJ1V0PM00 (1st edition)
Date Published March 2000 NS CP(K)
Printed in Japan
2000

PagesPages 30
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