Sharp SF-1120 - Manual (Page 137)

(2) ADU CPU (IC1)
1. Outline
The CPU controls the loads of the ADU unit and performs data trans-
mission through the copier main PWB and the serial data line to make
synchronization with data transmission to control the ADU unit.
2. Feature
The H8/3297 series is a single chip microcomputer which integrates
the H8/300CPU and the peripheral devices.
3. Internal block diagram
FIg. 1.1 shows the internal block diagram of the LSI.
Fig. 1.1 Internal block diagram
P10/A0
P11/A1
P12/A2
P13/A3
P14/A4
P15/A5
P16/A6
P17/A7
P20/A8
P21/A9
P22/A10
P23/A11
P24/A12
P25/A13
P26/A14
P27/A15
P40/IRQ2/ADT RG
P41/IRQ1
P42/IRQ0
P43/RD
P44/WR
P45/AS
P46/ φ
P47/WAIT
P30/D0
P31/D1
P32/D2
P33/D3
P34/D4
P35/D5
P36/D6
P37/D7
Data bus (Lower)
ROM RAM
Watch-dog
timer
16-bit free
running timer
8-bit timer
x 2ch
Serial
communication
interface
10-bit A/D
convertor
x 8ch
Port 6 Port 7 Port 5
CPU
H8/300
12 – 18