EM78P257
OTP ROM
Address Name
Reset Type
/RESET and WDT
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
0
Bit 3
0
Bit 2
0
Bit 1
0
Bit 0
0
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
/RESET and WDT
HTR7 HTR6
HTR5 HTR4
HTR3 HTR2
HTR1 HTR0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IOCA1
N/A
(HTR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
/RESET and WDT
PTR7
PTR6
PTR5
PTR4
PTR3
PTR2
PTR1
PTR0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IOCB1
N/A
(PTR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
/RESET and WDT
INTE
INT
0
0
TS
1
1
TE
1
1
X
1
1
PSR2
PSR1 PSR0
1
1
1
1
1
1
1
1
N/A
CONT
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
/RESET and WDT
-
-
-
-
-
-
-
-
U
P
U
P
U
P
U
P
U
P
U
P
U
P
U
P
0x00
R0(IAR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
/RESET and WDT
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
-
0
00
-
0
0
0x01 R1(TCC)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
/RESET and WDT
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
0x02
0x03
R2(PC)
R3(SR)
Wake-Up from Pin
Change
Bit Name
Power-On
/RESET and WDT
Jump to address 0x08 or continue to execute next instruction
RST
0
IOCS
PS0
0
T
1
t
P
1
t
Z
U
P
DC
U
C
U
P
0
0
P
0
P
Wake-Up from Pin
Change
P
P
P
t
t
P
P
P
Bit Name
Power-On
/RESET and WDT
GP1
U
P
BS
0
P
X
U
P
X
U
P
X
U
P
X
U
P
X
U
P
X
U
P
0x04 R4(RSR)
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
P57
1
P56
1
P55
1
P54
1
P53
1
P52
1
P51
1
P50
1
0x05
0x06
R5
R6
/RESET and WDT
1
1
1
1
1
1
1
1
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
Bit Name
Power-On
P67
1
P66
1
P65
1
P64
1
P63
1
P62
1
P61
1
P60
1
/RESET and WDT
1
1
1
1
1
1
1
1
This specification is subject to change without prior notice.
36
07.27.2004 (V1.4)
ELAN [ ELAN MICROELECTRONICS CORP ]
