BS85B12-3 Datasheet, PDF (51/182 Pages) Holtek Semiconductor Inc – Touch Key Flash Type 8-Bit MCU with LCD/LED Driver

BS85B12-3/BS85C20-3
Touch Key Flash MCU with LCD/LED Driver
The different kinds of resets all affect the internal registers of the microcontroller in different ways. To
ensure reliable continuation of normal program execution after a reset occurs, it is important to know
what condition the microcontroller is in after a particular reset occurs. The following table describes
how each type of reset affects each of the microcontroller internal registers. Note that where more than
one package type exists the table will reflect the situation for the larger package type.
Register
Power-on Reset
LVR Reset
WDT Time-out
WDT Time-out
(Normal Operation) (IDLE or SLEEP)
MP0
MP1
BP
BP
ACC
PCL
TBLP
TBLH
TBHP
TBHP
STATUS
SMOD
LVDC
INTEG
WDTC
TBC
INTC0
INTC1
INTC2
INTC3
MFI0
MFI1
MFI2
MFI3
PAWU
PAPU
PA
PAC
PBPU
PBPU
··
··
·
·
··
··
··
··
·
·
··
··
··
··
··
··
··
··
··
·
··
··
··
··
··
··
··
··
·
·
xxxx xxxx
xxxx xxxx
---- ---0
---- --00
xxxx xxxx
0000 0000
xxxx xxxx
-xxx xxxx
---- -xxx
---- xxxx
--00 xxxx
0000 0011
--00 -000
---- 0000
0111 1010
0011 0111
-000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
-000 -000
0000 0000
0000 0000
0000 0000
1111 1111
1111 1111
--00 0000
0000 0000
uuuu uuuu
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---- ---0
---- --00
uuuu uuuu
0000 0000
uuuu uuuu
-uuu uuuu
---- -uuu
---- uuuu
--uu uuuu
0000 0011
--00 -000
---- 0000
0111 1010
0011 0111
-000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
-000 -000
0000 0000
0000 0000
0000 0000
1111 1111
1111 1111
--00 0000
0000 0000
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uuuu uuuu
---- ---0
---- --00
uuuu uuuu
0000 0000
uuuu uuuu
-uuu uuuu
---- -uuu
---- uuuu
--1u uuuu
0000 0011
--00 -000
---- 0000
0111 1010
0011 0111
-000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
-000 -000
0000 0000
0000 0000
0000 0000
1111 1111
1111 1111
--00 0000
0000 0000
uuuu uuuu
uuuu uuuu
---- ---u
---- --uu
uuuu uuuu
0000 0000
uuuu uuuu
-uuu uuuu
---- -uuu
---- uuuu
--11 uuuu
uuuu uuuu
--uu -uuu
---- uuuu
uuuu uuuu
uuuu uuuu
-uuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
-uuu -uuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
--uu uuuu
uuuu uuuu
Rev. 1.00
45
February 1, 2011