Toshiba TLCS-90 Series Data Book page 158

TOSHIBA
(9) Reset
TMP8049PI-6,TMP8039PI-6
Stack Pointer
/
I
C
I
AC
I
FO
I
BS
11 I
S 2 lSI
I
SO
MSB
I II
LSB
1 _ _ _ _ _ 11
Saved in stack area Spare ("l" during Read)
at the time of Sub-
routine Call.
Bits
0 -
2
Bit
3
Stack Pointer Bits(SO, Sl, S2)
Not used
("1"
level when read.)
Working Register Bank Switch Bit
(BS)
Bit
4
Bit 5
Bit 6
Bit 7
o
Bank 0
1 Bank 1
Flag 0 (FO)
Auxiliary Carry (AC) carry bit generated by an ADD
instruction and used by the decimal adjust instruction
DA, A CAC)
Carry (C) flag which indicates that the previous
operation has resulted in the accumulator.
(C)
The reset input provide s a means for ini t ial iza t ion of the proces sor.
This Schmitt trigger input has an internal pullup registor which in
combination with an external l~F capacitor provides an internal reset
pulse sufficient length to guarantee that all internal logic is
initialized.
lkr2
r-L-o---'V\l\t---l-llF~JP-----a
RESET
MCU48-148