HT45R22E Holtek Semiconductor, HT45R22E Datasheet - Page 29

• Manufacturer Part Number: HT45R22E
• Description: Remote Type 8-bit OTP MCU
• Manufacturer: Holtek Semiconductor

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:
Rev. 1.00
PCL
MP0
MP1
ACC
TBLP
TBLH
WDTS
STATUS
INTC0
INTC1
MFIC
TMR0
TMR0C
TMR1
TMR1C
PA
PAC
PAWK
PAPU
PB
PBC
PBPU
PC
PCC
PCWK
PCPU
CTRL0
CTRL1
SCOMC
CMP0C
CMP1C
COPA0C
COPA1C
COPA2C
COPA3C
OPA0OC
OPA1OC
Register
- not implemented; u means unchanged ; x means unknown
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
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 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 x 0 0 1 0 0 0
0 x 0 0 1 0 0 0
0 0 0 0 1 0 0 0
0 0 0 0 1
1 0 0 0 1 0 1 0
0 0 0 0 0 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
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
x x x x x x x
Power-on
1 1 1 1 1 1
1 1 1 1 1 1
0 0 0 0 0 0
0 0 x x x x
Reset
0 0 0 0
0
1 1 1
0 0
0 0 0
0 0
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
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
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 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 x 0 0 1 0 0 0
0 x 0 0 1 0 0 0
0 0 0 0 1 0 0 0
0 0 0 0 1
1 0 0 0 1 0 1 0
0 0 0 0 0 0 0 0
x x x x x x x x
x x x x x x x x
RES or LVR
u u u u u u u
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
u u u u u u
1 1 1 1 1 1
1 1 1 1 1 1
Reset
0 0 0 0
29
0
1 1 1
0 0
0 0 0
0 0
(Normal Operation)
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
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
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 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
WDT Time-out
0 x 0 0 1 0 0 0
0 x 0 0 1 0 0 0
0 0 0 0 1 0 0 0
0 0 0 0 1
1 0 0 0 1 0 1 0
0 0 0 0 0 0 0 0
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
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 u u u u u
1 1 1 1 1 1
1 1 1 1 1 1
0 0 0 0
0
1 1 1
0 0
0 0 0
0 0
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
WDT Time-out
u u u u u u u u
u u u u u u u u
(Idle/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 u u
u u u u u u u
u
HT45R22E
u u u u u u
1 1 u u u u
u u u u u u
u u u u u u
March 17, 2010
u u u u
u
www.DataSheet4U.com
u u u
u u
u u u
u u