BS85B12-3 HOLTEK [Holtek Semiconductor Inc], BS85B12-3 Datasheet - Page 51

• Manufacturer Part Number: BS85B12-3
• Description: Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

BS85B12-3/BS85C20-3
Touch Key Flash MCU with LCD/LED Driver
Rev. 1.00
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
Register
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.
Power-on Reset
0 0 0 0 0 0 0 0
0 1 1 1 1 0 1 0
0 0 1 1 0 1 1 1
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 1
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
0 0 0 0 0 0 0
0 0 0
x x x x x x x
0 0 0 0 0 0
0 0 x x x x
0 0
0 0 0 0
x x x x
0 0 0
x x x
0 0 0
0 0
0
u u u u u u u u
u u u u u u u u
u u u u u u u u
0 0 0 0 0 0 0 0
u u u u u u u u
0 1 1 1 1 0 1 0
0 0 1 1 0 1 1 1
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 1
u u u u u u u
0 0 0 0 0 0 0
0 0 0
LVR Reset
u u u u u u
0 0 0 0 0 0
0 0
45
u u u u
0 0 0 0
u u u
0 0 0
0 0 0
0 0
0
(Normal Operation)
u u u u u u u u
u u u u u u u u
u u u u u u u u
0 0 0 0 0 0 0 0
u u u u u u u u
0 1 1 1 1 0 1 0
0 0 1 1 0 1 1 1
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
WDT Time-out
0 0 0 0 0 0 1 1
u u u u u u u
0 0 0 0 0 0 0
0 0 0
1 u u u u u
0 0 0 0 0 0
0 0
u u u u
0 0 0 0
u u u
0 0 0
0 0 0
0 0
0
(IDLE or SLEEP)
u u u u u u u u
u u u u u u u u
u u u u u u u u
0 0 0 0 0 0 0 0
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
u u u u u u u u
WDT Time-out
u u u u u u u
u u u u u u u
u u u
February 1, 2011
1 1 u u u u
u u u u u u
u u
u u u u
u u u u
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