M37221 Mitsubishi, M37221 Datasheet - Page 51

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

Fig. 57. Internal state of microcomputer at reset
Port P0 direction register
Port P1 direction register
Port P2 direction register
Port P3 direction register
Port P5
Port P5 direction register
Port P3 output mode control register
DA-L register
PWM output control register 1
PWM output control register 2
I
I
I
I
Serial I/O mode register
DA1 conversion register
DA2 conversion register
Horizontal register
Vertical position register 1
Vertical position register 2
Character size register
Border selection register
Color register 0
Color register 1
Color register 2
Color register 3
Note : The contents of all other registers and RAM are undefined at reset, so set their initial values.
2
2
2
2
C address register
C status register
C control register
C clock control register
: Undefined
: Unused bit
(00CD
(00DC
(00CA
(00CB
(00CF
(00DA
(00DB
(00DE
(00DF
(00C1
(00C3
(00C5
(00C7
(00D5
(00D6
(00D8
(00D9
(00E0
(00E1
(00E2
(00E4
(00E5
(00E6
(00E7
(00E8
(00E9
Address
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
Contents of register
0
0 0
0 0
0 0
0 0
0
0
0 0 0
0
0
0
0
0
0
0
00
00
00
00
0 0
00
1 0
00
00
0 0
0 0
0 0
0 0
0 0
0 0
0
16
16
16
16
16
16
16
0 0 0
0 0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
M37221EF-XXXSP,M37221EFSP
CRT control register
CRT port control register
CRT clock selection register
A-D control register 1
A-D control register 2
Timer 1
Timer 2
Timer 3
Timer 4
Timer 12 mode register
Timer 34 mode register
Interrupt input polarity register
CPU mode register
Interrupt request register 1
Interrupt request register 2
Interrupt control register 1
Interrupt control register 2
ROM correction address 1 (high-order)
ROM correction address 1 (low-order)
ROM correction address 2 (high-order)
ROM correction address 2 (low-order)
ROM correction enable register
Processor status register
Program counter
with ON-SCREEN DISPLAY CONTROLLER
(00EC
(00ED
(00EA
(00EE
(00EF
(00FB
(00FC
(00FD
(00FE
(00FF
(021A
(021B
(00F0
(00F1
(00F2
(00F3
(00F4
(00F5
(00F9
(0219
Address Contents of register
(0217
(0218
(PC
(PC
(PS)
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
H
)
)
)
)
)
L
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
0
0 0
0
0
Contents of addressFFFF
Contents of addressFFFE
0
0
0
0
0
0
0
0
FF
FF
07
00
00
07
00
00
0 0
0
0
0
0
0
0
0
0
16
16
16
16
16
16
16
0
16
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0
16
16
0
0
0
0
0
0
0
0
0
0
0
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