Notes On Changeover To On-Chip Mask Rom Versions And On-Chip Mask Rom B-Mask Versions; Figure 1.7 Example Of Board Pattern Providing For External Capacitor - Hitachi H8/3062 Hardware Manual

1.5.4 Notes on Changeover to On-Chip Mask ROM Versions and On-Chip Mask ROM
B-Mask Versions
(1) Care is required when changing from the H8/3062F-ZTAT B-mask version with on-chip flash
memory to a model with on-chip mask ROM.
An external capacitor must be connected to the V
version (5 V model). This V
ROM versions. Changeover to a mask ROM version must therefore be taken into account
when undertaking pattern design, etc., in the board design stage.
(2) When changing from the H8/3062F-ZTAT B-mask version with on-chip flash memory to the
on-chip mask ROM B-mask version, note (1) above does not need to be considered because
the V pin is assigned to the same location in both versions. It does not need to be considered
CL
either when changing from the H8/3064F-ZTAT B-mask version to the on-chip mask ROM
B-mask version.
H8/3062 Series chip
V
CC
V
CL

Figure 1.7 Example of Board Pattern Providing for External Capacitor

pin occupies the same location as a V
CL
V power
CC
supply
pin
pin
pin of the H8/3062F-ZTAT B-mask
CL
← Land pattern for on-chip mask ROM versions
(0 Ω resistance mounted)
← Land pattern for H8/3062F-ZTAT B-mask version
(0.1 µF capacitor mounted)
pin in the on-chip mask
CC
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