HD404669 Datasheet, PDF (105/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

HD404669 Series
Notes: 1. I/O: I/O pin, I: Input pin, O: Output pin
2. As there are two each of pins O₀ to O₄, the respective pairs should be shorted.
3. Unused data pins (O₅ to O₇) on the PROM programmer side should be handled as shown below
on the socket side.
V_CC
O₅, O₆, O₇
4. Pin A₉ should be handled as shown below on the socket side.
V_CC
HD407A4669
A₉
Programmer side
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