EM78P258N
8-Bit Microprocessor with OTP ROM
6.5.1.2 Register Initial Values after Reset
The following summarizes the initialized values for registers.
Address Name
Reset Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit Name
C57
C56
C55
–
C54
–
C53
–
C52
–
C51
–
C50
–
Type
A
B
1
1
A
B
1
1
Power-On
/RESET and WDT
0
0
0
0
1
1
1
1
1
1
N/A
IOC50
IOC60
1
1
1
1
1
1
Wake-Up from Pin
Change
0
P
0
P
P
P
P
P
P
P
Bit Name
C67
C66
–
1
1
–
1
1
–
1
1
–
1
1
C61
1
C60
1
Power-On
1
1
1
1
N/A
N/A
N/A
N/A
N/A
N/A
N/A
/RESET and WDT
1
1
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
X
0
0
X
0
0
X
0
0
X
0
0
X
0
0
X
0
0
X
0
0
C70
1
Power-On
IOC70
IOC80
/RESET and WDT
1
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
X
0
0
X
0
0
–
0
0
–
0
0
–
0
0
TCCAEN TCCATS TCCATE
Power-On
0
0
0
0
0
0
/RESET and WDT
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
TCCBHE TCCBEN
–
0
0
–
0
0
X
0
0
TCCCEN
–
0
0
–
0
0
Power-On
0
0
0
0
0
0
IOC90
/RESET and WDT
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
TCCCSE TCCCS2 TCCCS1 TCCCS0
IRE
0
HF
0
LGP
IROUTE
Power-On
0
0
0
0
0
0
0
0
0
0
0
0
IOCA0
/RESET and WDT
0
0
(IR CR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
–
1
1
–
1
1
/PD55
/PD54
/PD53
/PD52
/PD51
/PD50
Power-On
1
1
1
1
1
1
1
1
1
1
1
1
IOCB0
/RESET and WDT
(PDCR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
/OD67
/OD66
–
1
1
–
1
1
–
1
1
–
1
1
/OD61
/OD60
Power-On
1
1
1
1
1
1
1
1
IOCC0
/RESET and WDT
(ODCR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
34 •
Product Specification (V1.0) 06.16.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
