Issue
157 August 2003
Spotlight
on Renesas H8 Family
Hitachi
and Mitsubishi Market MCUs for Embedded Systems
H8
SERIES OPTIONS
The
entire H8 family is based on the aforementioned CPU
architecture, and it is divided into a series of devices
with similar purpose. Each series contains devices with
different peripherals. Each device is available with
varying memory size and type.
Take
a look at the differences in the flash memory devices
listed in Table 2. Each device was chosen from one of
four different H8 series. Table 3 lists the special
features of each series as well as a few sample applications
that may be appropriate for devices within the series.
| Table
2—The four devices represent a sampling of the
wide range of technology available within the H8
family. |
| Table
3—I’ve decided to highlight four groups within
the H8 family. Designed with specific features,
each series is aimed at a particular market segment. |
To
save space, I combined function diagrams of the devices
into one chart (see Figure 4). Use the chart to learn
how the devices stack up function for function. As I
describe each device, refer to Figure 4 and the combined
memory map in Figure 5.
|
(Click
here to enlarge)
|
Figure
4—Use this combined function comparison chart to
learn how the devices stack up against each other.
You should be able to select a device based on the
application requirements. |
|
(Click
here to enlarge)
|
Figure
5—Note that the address scale on this memory map
comparison is not linear. The ’3804 and ’3687 are
limited to 64 KB, but the ’3048 and ’2329 can address
16 MB. |
