Assp Based Approach - Hitachi H8/300L Series Manual

What is the H8/300L Series?

2. ASSP Based Approach

The members of the H8/300L Series include on-chip peripheral functions that are optimal for
particular applications.
The microcomputers in the H8/300L Series consist of an H8/300L CPU module, a standard
bus to which the on-chip modules are connected, and some number of modules, such as
ROM/RAM, VFD/LCD controller/driver, A/D and D/A converter, and I/O port including
general purpose I/O ports and high current I/O ports. Thus each product in this series
integrates the modules required to form that product. This approach allows us to develop
products that are optimal for a particular application area.
Standard bus (address bus and data bus)
CPU module
H8/300L CPU
Memory modules
ROM
RAM
General purpose
peripheral modules
Display modules
VFD controller/
Timer A
driver
LCD controller/
Timer B
driver
Analog interface
modules
SCI1 A/D converter
SCI2
D/A converter
Vacuum fluorescent display
application equipment
H8/3724, H8/3714, etc.
CPU
H8/300L
ROM RAM
VFD
Timer A
Timer B SCI 1
Timer C SCI 2
Timer D
Timer E
14-bit PWM
A/D converter
Port A Port 0
10
Liquid crystal display
application equipment
H8/3834, H8/3814, etc.
CPU
H8/300L
ROM RAM
LCD
Timer A
SCI 1
Timer B
Timer C SCI 2
Timer F SCI 3
Timer G
14-bit PWM
A/D converter
Port B Port C