Sharp PC-E220

"
....
(
- 2-
Name
Function P i n func t ion
B it map I READ
WRITE ! A DDRESS
I A1-IA8 KEY common i nput
IN
MSB
LSB
0 x 1 0H
(Including a
I
I
I
I
I I I I I
pu ll -down
r es i stor)
8 7
6 5 4
3
2
1
K01-K08
KEY s trobe OUT
MSB
LSB
x
0
11 H
( Pch open drain)
I I I I
I I
I
I
KO
I
8
1
6
5
4
3 2
1
K09, K010 KEY strobe OU T
MSB L SB
x
0
1 2 H
( Pch open drain )
I
I
I I
I I
I
KO
I
KO
I
10 9
SFTIN
SHIFT key i nput I N
MSB
L SB
0 x 1 3H
( Inc l uding a pull
I I I I
I
I I
I SIT I
dow n res i stor)
TI mer 1 S signal i s set
-
MSB
L SB
0
0
1 4 H
abo u t every 0 . 6 sec.
I
I
I
I
I I I
I
1 S
I
( Note)
After judgement of 1 S signal , procedure
01H ~OUT ( 14H) must be performed
t o reset 1 S signal latch.
I
XIN control
Controls on/off of IN
MSB
LSB
0 0
15H
XIN input.
J o! I
I
I
I
I I
I
I
I
I
O : XIN input inhib it
1 : XIN input enable
Maskable i nterrupt I nd i ca t es i nterrupt
-
MSB
L SB
0
I
0
1 6H
f actor generating factor
I
l
I
I
I rnTT I
15
I KON I
I
with the interrupt
IA
mask ON .
C onditions f or becoming ·1 " :
I
When I A- I A k ey i nput signal i s supp li ed .
When KON-KON key i nput is s u ppl i ed.
1 S-D.6 sec timer signal i s supp l ied .
A low pulse is suppl i ed to INT1-INT1 i nput pin.
To reset each f actor , write ·1 ." W i th OFH
~
I OUT ( 16H), al l factors become O .
!
OOH
10H
ZOH
J OH
40H
SO H
60H
R ESERVED
FOR SYSTEM
FREE
F REE
F OR DISPLAY
F OR D I SPLAY
R E S ERVED
FFH
5 . 1/0 map
PC-E220