FM8P54 Datasheet, PDF (21/50 Pages) List of Unclassifed Manufacturers – EPROM/ROM-Based 8-Bit Microcontroller Series

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FM8P54/56
TABLE 2.1: Reset Conditions for All Registers
Register
Address
Power-on Reset
Brown-out Reset
ACC
N/A
xxxx xxxx
OPTION
N/A
-011 1111
IOSTA
05h
---- 1111
IOSTB
06h
1111 1111
INDF
00h
xxxx xxxx
TMR0
01h
xxxx xxxx
PCL
02h
1111 1111
STATUS
03h
0001 1xxx
FSR
04h
11xx xxxx
PORTA
05h
---- xxxx
PORTB
06h
xxxx xxxx
General Purpose Register
07h
xxxx xxxx
PCON
08h
1010 ----
WUCON
09h
0000 0000
PCHBUF
0Ah
54: ---- ---0
56: ---- --00
PDCON
0Bh
1111 1111
ODCON
0Ch
0000 0000
PHCON
0Dh
1111 1111
INTEN
0Eh
0--- -000
INTFLAG
0Fh
---- -000
General Purpose Registers
10 ~ 3Fh
xxxx xxxx
Legend: u = unchanged, x = unknown, - = unimplemented,
# = refer to the following table for possible values.
TABLE 2.2: TO / PD Status after Reset
TO PD
RESET was caused by
1
1 Power-on Reset
1
1 Brown-out reset
u
u RSTB Reset during normal operation
1
0 RSTB Reset during SLEEP
0
1 WDT Reset during normal operation
0
0 WDT Reset during SLEEP
Legend: u = unchanged
TABLE 2.3: Events Affecting TO / PD Status Bits
Event
TO PD
Power-on
1
1
WDT Time-Out
0
u
SLEEP instruction
1
0
CLRWDT instruction
1
1
Legend: u = unchanged
RSTB Reset
WDT Reset
uuuu uuuu
-011 1111
---- 1111
1111 1111
uuuu uuuu
uuuu uuuu
1111 1111
000# #uuu
11uu uuuu
---- uuuu
uuuu uuuu
uuuu uuuu
1010 ----
0000 0000
54: ---- ---0
56: ---- --00
1111 1111
0000 0000
1111 1111
0--- -000
---- -000
uuuu uuuu
Rev1.21 May 31, 2005
P.21/FM8P54/56