ht82k70e-l Holtek Semiconductor Inc., ht82k70e-l Datasheet - Page 27

• Manufacturer Part Number: ht82k70e-l
• Description: I/o Type 8-bit Otp Mcu
• Manufacturer: Holtek Semiconductor Inc.

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 the microcontroller in-
ternal registers.
Note:
Rev. 1.00
MP0
MP1
ACC
PCL
TBLP
TBLH
WDTS
STATUS
INTC0
TMR0H
TMR0L
TMR0C
TMR1H
TMR1L
TMR1C
PA
PAC
PB
PBC
PC
PCC
PD
PDC
PE
PEC
PF
PFC
INTC1
TBHP
SBCR
SBDR
WSR
CTLR
Register
* means warm reset
- not implemented
u means unchanged
x means unknown
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
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
0 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 x 0 0 0
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
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
x x x x x x x x
x x x x x x x x
(Power-on)
0 0 0 0 0 0 0
x x x x x x x
0 0 x x x x
Reset
0 1 0 0 0
0 1 0 0 0
0
1 1 1
1 1 1
1 1 1
0
(Normal Operation)
WDT Time-out
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 0
0 0
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
u u u u u u u u
0 1 1 0 0 0 0 0
u u u u 0 0 0 0
0 0 0 0 x 0 0 0
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
x x x x x x x x
u u u u u u u
0 0 0 0 0 0 0
1 u u u u u
0 1 0 0 0
0 1 0 0 0
0
1 1 1
1 1 1
1 1 1
0
27
(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 0
0 0
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
u u u u u u u u
0 1 1 0 0 0 0 0
u u u u 0 0 0 0
0 0 0 0 x 0 0 0
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
x x x x x x x x
RES Reset
u u u u u u u
0 0 0 0 0 0 0
u u u u u u
0 1 0 0 0
0 1 0 0 0
0
1 1 1
1 1 1
1 1 1
0
HT82K70E-L/HT82K76E-L
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 0
0 0
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
u u u u u u u u
0 1 1 0 0 0 0 0
u u u u 0 0 0 0
0 0 0 0 x 0 0 0
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
x x x x x x x x
RES Reset
u u u u u u u
0 0 0 0 0 0 0
(HALT)
0 1 u u u u
0 1 0 0 0
0 1 0 0 0
0
1 1 1
1 1 1
1 1 1
0
September 15, 2009
WDT Time-out
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 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 x u u 0
u u u u u u u
u u u u u u u
(HALT)*
1 1 u u u u
u u u u u
u u u u u
u
u u u
u