M37544 RENESAS [Renesas Technology Corp], M37544 Datasheet - Page 34

• Manufacturer Part Number: M37544
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev.1.04
REJ03B0012-0104Z
7544 Group
Fig. 39 Internal status of microcomputer at reset
2004.06.08
(1)
(2)
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(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
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page 34 of 66
X : Undefined
The content of other registers is undefined when the microcomputer is reset.
The initial values must be surely set bifore you use it.
Port P0 direction register
Port P1 direction register
Port P2 direction register
Port P3 direction register
Pull-up control register
Port P1P3 control register
Serial I/O status register
Serial I/O control register
UART control registe
Timer A mode register
Timer A (low-order)
Timer A (high-order)
Prescaler 1
Timer 1
Timer X mode register
Prescaler X
Timer X
Timer count source set register 1
Timer count source set register 2
A/D control register
MISRG
Watchdog timer control register
Interrupt edge selection register
CPU mode register
Interrupt request register 1
Interrupt request register 2
Interrupt control register 1
Interrupt control register 2
Processor status register
Program counter
Address
001D
002C
002D
003C
003D
001A
001B
001E
002B
002E
003A
003B
003E
001F
002F
003F
0001
0003
0005
0007
0016
0017
0019
0028
0029
0034
0038
0039
(PC
(PC
(PS)
H
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
16
16
L
)
)
Contents of address FFFD
Contents of address FFFC
X
X
X X
0
1
1
0
0
0
1
X
X
X
0
1
0
0
0
0
Register contents
X
X
X X
0
0
1
0
0
1
0
0
0
0
0
1
1
0
0
0
FF
FF
FF
FF
FF
00
00
00
00
00
00
00
00
00
00
00
00
00
00
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
X
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
1
X
0
0
0
0
0
1
0
0
0
16
16
X
0
0
0
0
0
1
0
1
0