M37221 Mitsubishi, M37221 Datasheet - Page 36

• Manufacturer Part Number: M37221
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

Fig. 37. Block diagram of CRT display control circuit
36
Data bus
(Addresses 00E6
(Address 00EA
(Addresses 00E1
(Address 00E4
(Address 00EC
(Address 00E0
(Address 00E5
Horizontal position register
to 00E9
Vertical position registers
CRT port control register
Character size register
Border selection register
CRT control register
10 bits
RAM for display
Color registers
16
16
)
16
16
16
16
24
16
)
)
)
)
)
16
, 00E2
2
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
16
)
M37221EF-XXXSP,M37221EFSP
Shift register
ROM for display
12 bits
R
16
12 bits
Display position control circuit
256
with ON-SCREEN DISPLAY CONTROLLER
OSC1
Display oscillation
G
MITSUBISHI MICROCOMPUTERS
Output circuit
circuit
B
OSC2
OUT1
Display control
Shift register
H
SYNC
12 bits
circuit
OUT2
V
SYNC