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User’s Manual U12697EJ3V0UM
CHAPTER 1 OVERVIEW
The
µ
PD784225 Subseries is a member of the 78K/IV Series, and is an 80-pin general-purpose microcontroller
in which the functions of the
µ
PD784216 Subseries have been limited and to which a ROM correction function has
been added. The 78K/IV Series includes 8-/16-bit single-chip microcontrollers and provides a high-performance CPU
with functions such as 1 MB memory space access.
The
µ
PD784225 has a 128 KB ROM and 4,352-byte RAM on chip. In addition, it has high-performance timer/
counter, an 8-bit A/D converter, an 8-bit D/A converter, and an independent 2-channel serial interface.
The
µ
PD784224 is the
µ
PD784225 with a 96 KB mask ROM and a 3,584-byte RAM.
The
µ
PD78F4225 is the
µ
PD784225 with the mask ROM replaced by a flash memory.
The
µ
PD784225Y Subseries is the
µ
PD784225 Subseries with an added I
2
C bus control function.
The relationships among the products are shown below.
On-chip flash memory version
Mask ROM version
These products have applications in the following fields.
•
Car audio, portable audio, telephones, etc.
µ
PD78F4225Y
µ
PD78F4225
µ
PD784225Y
µ
PD784225
µ
PD784224Y
µ
PD784224
Flash memory
128 KB
RAM
4352 bytes
ROM
128 KB
RAM
4352 bytes
ROM
96 KB
RAM
3584 bytes
