HT48E70 Holtek Semiconductor, HT48E70 Datasheet - Page 14

• Manufacturer Part Number: HT48E70
• Description: I/O Type 8-Bit MTP MCU
• Manufacturer: Holtek Semiconductor

An extra option load time delay is added during system reset (power-up, WDT time-out at normal mode or RES reset).
The functional unit chip reset status are shown below.
The states of the registers is summarized in the table.
Note:
Rev. 1.00
Program Counter
Interrupt
Prescaler
WDT
Timer/Event Counter
Input/Output Ports
SP
TMR0H
TMR0L
TMR0C
TMR1H
TMR1L
TMR1C
Program
Counter
MP0
MP1
BP
ACC
TBLP
TBLH
STATUS
INTC
WDTS
PA
PAC
PB
PBC
PC
PCC
PD
PDC
PE
PEC
PF
PFC
PG
PGC
EECR
Register
* stands for warm reset
u stands for unchanged
x stands for unknown
(Power On)
0000 0111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
-000 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
--00 xxxx
xxxx xxxx
00-0 1---
00-0 1---
1000 ----
---- ---0
Reset
000H
(Normal Operation)
000H
Disable
Clear
Clear. After master reset, WDT begins counting
Off
Input mode
Points to the top of the stack
WDT Time-out
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
-000 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
--1u uuuu
00-0 1---
00-0 1---
1000 ----
---- ---0
000H
14
(Normal Operation)
RES Reset
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
-000 0000
0000 0111
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
--uu uuuu
00-0 1---
00-0 1---
1000 ----
---- ---0
000H
RES Reset
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
-000 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
--01 uuuu
00-0 1---
00-0 1---
1000 ----
(HALT)
---- ---0
000H
September 16, 2005
WDT Time-out
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
-uuu uuuu
uuuu uuuu
--11 uuuu
HT48E70
uu-u u---
uu-u u---
uuuu ----
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(HALT)*
---- ---u
000H