Sharp CE-150 - Page 248

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2-2. Internal Structure
2-2-1. Block diagram
F ig . 1- 1 B lo ck diagram of LH5801
VG G
'IC C
v ss
s
T A
D
XLO Xll
!n :; t ;uc lKin ~ ~ ooo e ~
& (:P l) (;(ln ltOI
tP 0S 'NAil HA N Y. I Ml
Clock, !1 :!( :111 1pt
C~'l t ru l con11 ol
T1rne1
(; (l! i lJ (,11
PO .,..,X: t
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00ti :r l)l
Pu Pv 01 .sP I
0;>( BA K ! ~ RQ atst r 0 -0 Rt\ \• M(OM £10f 0 Sfl 00 -0 1 I NO-tN7 PU PV UISP
Fig. 1-2 Internal register & flipflops
PH
'I
PL
'I
P: Pr ~ ra m counter
VA
VO
VM
VDIS
SL
•
S: Stack po i nte r
Carr; a 11d bouo v;
(b y« > to byte )
XH
YH
I UH
•1 XL
8
X r~g f Da1 a po intc-f.
8
YL
8
Yreg : or
8
~ Ur~g H < ~n<nal pu r po s ~ :e. regis ie r
A
•J
A: Ac cu mul a:t or
TM
'I
T 1.1: Tin,e1
Cl
PU l
: Ge r.oral pur pose fl ip fl op
I_]
Pl/
j 1) O ISP : L CO oa /o ff coo 1 10 !
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-· Z: Zero
'- -- - V: Ove r f.Jo "v
- H: Car e; ·
(d1 g1 l 10 di p, it)
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