NEC uPD78F4225Y, Руководство пользователя

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MOS INTEGRATED CIRCUIT
µ
PD78F4225Y
16/8-BIT SINGLE-CHIP MICROCONTROLLERS
DESCRIPTION
The
µ
PD78F4225Y is a product in the
µ
PD784225Y subseries in the 78K/IV series.
The
µ
PD78F4225Y has a flash memory in the place of the internal ROM of the
µ
PD784225Y. Data can be written
to or erased from the flash memory of the
µ
PD78F4225F with the microcontroller mounted on a printed wiring board.
The
µ
PD78F4225Y is based on the
µ
PD78F4225 with an I
2
C bus control function appended, and is ideal for
applications in audio visual.
The functions are explained in detail in the following user’s manuals. Be sure to read this manual when
designing your system.
µ
PD784225, 784225Y Subseries User’s Manual - Hardware : Planned
78K/IV Series User’s Manual - Instruction : U10905E
FEATURES
• I
2
C bus serial interface supporting multi task
• Pin-compatible with mask ROM model (except V
PP
pin)
• Flash memory: 128K bytes
• Internal RAM : 4352 bytes
• Same operating voltage as mask ROM model: V
DD
= 1.8 to 5.5 V
ORDERING INFORMATION
Part Number Package
µ
PD78F4225YGC-8BT 80-pin plastic QFP (14
×
14 mm)
µ
PD78F4225YGK-BE9 80-pin plastic TQFP (fine pitch) (12
×
12 mm)
Document No. U12377EJ1V0PM00 (1st edition)
Date Published May 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.
© 1997
PRELIMINARY PRODUCT INFORMATION