M37221 Mitsubishi, M37221 Datasheet - Page 13

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

Fig. 7. Structure of interrupt-related registers
7
7
7
0
0
0
0
0
0
Interrupt request register 1
Interrupt control register 1
(ICON1 : address 00FE
Interrupt input polarity register
(RE : address 00F9
(IREQ1 : address 00FC
Timer 1 interrupt request bit
Timer 2 interrupt request bit
Timer 3 interrupt request bit
Timer 4 interrupt request bit
CRT interrupt request bit
V
Multi-master I C-BUS
interface interrupt request bit
INT3 interrupt request bit
Timer 1 interrupt enable bit
Timer 2 interrupt enable bit
Timer 3 interrupt enable bit
Timer 4 interrupt enable bit
CRT interrupt enable bit
V
Multi-master I C-BUS
interface interrupt enable bit
INT3 interrupt enable bit
Fix these bits to “0.”
INT1 polarity switch bit
INT2 polarity switch bit
INT3 polarity switch bit
Fix this bit to “0.”
SYNC
SYNC
0 : Positive polarity
1 : Negative polarity
0 : Positive polarity
1 : Negative polarity
0 : Positive polarity
1 : Negative polarity
interrupt enable bit
interrupt request bit
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
2
2
16
)
16
16
0 : No interrupt request issued
1 : Interrupt request issued
)
0 : Interrupt disabled
1 : Interrupt enabled
)
M37221EF-XXXSP,M37221EFSP
7
0
7
0
0 0
with ON-SCREEN DISPLAY CONTROLLER
0
0
0
Interrupt request register 2
(IREQ2 : address 00FD
Interrupt control register 2
(ICON2 : address 00FF
Fix these bits to “0.”
INT1 interrupt request bit
INT2 interrupt request bit
Serial I/O interrupt request bit
f(X
Fix this bit to “0.”
INT1 interrupt enable bit
INT2 interrupt enable bit
Serial I/O interrupt enable bit
Fix this bit to “0.”
f(X
IN
IN
)/4096 interrupt request bit
)/4096 interrupt enable bit
16
16
)
)
13