Sanyo ECR-238 - Page 20

SIGNAL DESCRIPTION
[No[
Name
|
Signal
[VO[
Description
[No
Name
|
Signal
|V/O
|
[1 |s3_
|
Ta/Se__|
0
|
[2 {s2—s«([T2/Sf__|_O |Key scan signal / Segment
[3 |Si___—s*(T1/Sq_|_O [signal for display
4 [so_—[TOSDP_| O |
(es
[_Description
36
1P51——~«([AS/H6
~—[O_
[Address
bus
for
RAM
37 [P52 ——s«[AG/H7_—‘|[O_|/ Printer digit select signal
38
[P53
sAZ/HB8
OT
99 [RESET [RESET [I [ResetSignal
Display digit signal
a)
‘ower down signal
fawer open sensor signal 4
jotor signal for printer
ey retum signal (option diode’
iming pulse from printer
ey retum signal
Mode lock, PF ke
ou 8 z ry
aA) =19
O/INTO
T/INT1
Az
ar
o
ao) a) al ol
Vs
BIA A
A
Se =q QO
= *0
Pl LT | Jelefofofe|-[---Jajaa[slelol_ lol: |-| —--lel-
©
2/INT2
CO} CI—~N 33} Ci jy Co] Pop
Ps)
ead / Write signal for RAM
ddress bus for RAM
/ Printer digit select signal
AM/Printer selection signal
ogo Stamp drive signal
ata bus
ata bus
>
21 A12/H13
=
A
A10/
AQ/H
A8/H9
11 =>
No
=
Zz
2
=)—0 oIi—
jr
H —_
Address bus for RAM
/ Printer digit select signal
10/S15/PH
Ps)
3/BU
El ad ell lc ie a la ole i
ata bus T14/S11_ [DRO
ata bus
Key retum signal
Key retum signal iso_C*(PS.
Key
retum
signal
s8.sié«*(
TRC
SSO
rt me] —
Address bus for RAM / Printer
RO st] af | ef —h fe] a]
— (1 COIN] o>) On f]G9]Po]— ~
>
pare = = Ph
me) vu “U/ "0/0 Ul] UO
& o313]08
5
Ni Oo
as
digit
signal
e2_[S5_TS/Sc__—|O_
[28
[P43
AGHA
63
[S4_sT4/Sd__—|O_
r29
[PPO
_|BZ
|
O
|Buzzersignal
—S—SSC«@4#
«VDD
[VCM
|
[Powersupply+5V
rao
[Xt
[X1___|
-
[Mainclock
oscillation
(4.19MHz)
|
[|
TT
|
(OVsignal
ground
|
133.
[XT1
———[AS/HE
Time
clock
oscillation(32.768
kHz)
|__|
[34
[xT2_[AB/H7
_|
a
ia
coe
A7/H8
Address
bus
for
RAM
ij
/
Print
digit
select
signal
IC2
(LC3564PL
AO
~
A12
:
Address
input
/WE
:
Read
/ Write
enable
input
/
OE
:
Output
enable
input
/ CE1, CE2 : chip enable input
1/01 ~1/08 : Data input / Output
Vcc. GND : Power Supply, Ground
OPERATING MODE
Operation
Mode
NS Se ook Re ee es Ee Co 2 |
(=) [5] Pel (=) fel fo} (fol fod [+] fod [m] f+]
[asl [es] [5] Ved Te) (8) (EJ LS] Le) [2] 1S) [8] 1S) LS)
SSESSHP ATER RAG
a
|
a
=
a
<4 N
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