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16.1
Overview
The H8/3062 Series has high-speed static RAM on-chip. The RAM is connected to the CPU by a
16-bit data bus. The CPU accesses both byte data and word data in two states, making the RAM
useful for rapid data transfer.
The on-chip RAM can be enabled or disabled with the RAM enable bit (RAME) in the system
control register (SYSCR). When the on-chip RAM is disabled, that area is assigned to external
space in the expanded modes. The on-chip RAM specifications for the product lineup are shown in
table 16.1.
Table 16.1 H8/3062 Series On-Chip RAM Specifications
H8/3062
F-ZTAT
RAM size
4 kbytes
Address
Modes
H'FEF20
assign-
1, 2, 7
to
ment
H'FFF1F
Modes
H'FFEF20
3, 4, 5
to
H'FFFF1F
Mode
H'FE20
6
to
H'FF1F
Section 16 RAM
H8/3062
H8/3062
F-ZTAT
F-ZTAT
R-Mask
A-Mask
Version
Version
4 kbytes
4 kbytes
H'FEF20
H'FEF20
to
to
H'FFF1F
H'FFF1F
H'FFEF20
H'FFEF20
to
to
H'FFFF1F
H'FFFF1F
H'FE20
H'FE20
to
to
H'FF1F
H'FF1F
H8/3062
H8/3061
Mask ROM
Mask ROM
Version
Version
4 kbytes
4 kbytes
H'FEF20
H'FEF20
to
to
H'FFF1F
H'FFF1F
H'FFEF20
H'FFEF20
to
to
H'FFFF1F
H'FFFF1F
H'FE20
H'FE20
to
to
H'FF1F
H'FF1F
H8/3060
Mask ROM
H8/3064
Version
F-ZTAT
2 kbytes
8 kbytes
H'FF720
H'FDF20
to
to
H'FFF1F
H'FFF1F
H'FFF720
H'FFDF20
to
to
H'FFFF1F
H'FFFF1F
H'F720
H'FD20
to
to
H'FF1F
H'FF1F
471
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