HT48C50- Datasheet, PDF (17/45 Pages) Holtek Semiconductor Inc – 8-Bit Microcontroller

Preliminary
HT48C50-1
The states of the registers is summarized in the table.
Register
Reset
(Power On)
WDT Time-out
(Normal
Operation)
RES Reset
(Normal
Operation)
TMR0
xxxx xxxx
uuuu uuuu
uuuu uuuu
TMR0C
00-0 1000
00-0 1000
00-0 1000
TMR1H
xxxx xxxx
uuuu uuuu
uuuu uuuu
TMR1L
xxxx xxxx
uuuu uuuu
uuuu uuuu
TMR1C
00-0 1---
00-0 1---
00-0 1---
Program
Counter
000H
000H
000H
MP0
xxxx xxxx
uuuu uuuu
uuuu uuuu
MP1
xxxx xxxx
uuuu uuuu
uuuu uuuu
ACC
xxxx xxxx
uuuu uuuu
uuuu uuuu
TBLP
xxxx xxxx
uuuu uuuu
uuuu uuuu
TBLH
-xxx xxxx
-uuu uuuu
-uuu uuuu
STATUS
--00 xxxx
--1u uuuu
--uu uuuu
INTC
-000 0000
-000 0000
-000 0000
WDTS
0000 0111
0000 0111
0000 0111
PA
1111 1111
1111 1111
1111 1111
PAC
1111 1111
1111 1111
1111 1111
PB
1111 1111
1111 1111
1111 1111
PBC
1111 1111
1111 1111
1111 1111
PC
1111 1111
1111 1111
1111 1111
PCC
1111 1111
1111 1111
1111 1111
PD
1111 1111
1111 1111
1111 1111
PDC
1111 1111
1111 1111
1111 1111
PG
---- -111
---- -111
---- -111
PGC
---- -111
---- -111
---- -111
Note: "*" stands for "warm reset"
"u" stands for "unchanged"
"x" stands for "unknown"
RES Reset
(HALT)
uuuu uuuu
00-0 1000
uuuu uuuu
uuuu uuuu
00-0 1---
000H
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
-uuu uuuu
--01 uuuu
-000 0000
0000 0111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
1111 1111
---- -111
---- -111
WDT
Time-out
(HALT)*
uuuu uuuu
uu-u uuuu
uuuu uuuu
uuuu uuuu
uu-u u---
000H
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
-uuu uuuu
--11 uuuu
-uuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
---- -uuu
---- -uuu
17
June 14, 2000