Read Sharp UP-600 / UP-700 (serv.man25) Service Manual online
2-3. CKDC9 (HD404728B02FS)
1) General description
The CKDC9 is a 4-bit microcomputer developed for the UP-600/700
and provides functions to control the real-time clock, keys, and dis-
plays. The basic functions of the CKDC7 are shown below.
and provides functions to control the real-time clock, keys, and dis-
plays. The basic functions of the CKDC7 are shown below.
Keys:
The CKDC9 is capable of controlling a maximum of 256
momentary keys. (Sharp 2-key rollover control)
Simultaneous scanning of key and switch
(When a key is scanned, the state of a mode and clerk
switch is also buffered. The host can scan the state of
switch together with the key entry data at the same time
the key is scanned.)
momentary keys. (Sharp 2-key rollover control)
Simultaneous scanning of key and switch
(When a key is scanned, the state of a mode and clerk
switch is also buffered. The host can scan the state of
switch together with the key entry data at the same time
the key is scanned.)
Switches:
Mode switch with 14 positions maximum
8-bit clerk (cashier) switch
2-bit feed switch
1-bit receipt on/off switch
1-bit option switch
4-bit general-purpose switch (1-bit is used for keyboard
select)
8-bit clerk (cashier) switch
2-bit feed switch
1-bit receipt on/off switch
1-bit option switch
4-bit general-purpose switch (1-bit is used for keyboard
select)
Displays:
16-column dot display
12-column 7-segment display (column digit selectable)
All column blink controlled for the dot and 7-segment dis-
play decimal point and indicators
Programmable patterns for 7-segment display:
Four patterns
Internal driver for 7-segment display
12-column 7-segment display (column digit selectable)
All column blink controlled for the dot and 7-segment dis-
play decimal point and indicators
Programmable patterns for 7-segment display:
Four patterns
Internal driver for 7-segment display
Buzzer:
Single tone control
Clock:
Year, month, day of month, day of week, hour, minute
Alarm:
Hour, minute
Interrupt request (event control):
Detection of key input, switch position change, alarm is-
sue, and counter overflow
sue, and counter overflow
2) Pin description
Pin
No.
Symbol
Signal
name
In/
Out
Function
1
SB
SB
Out
Segment B
2
SC
SC
Out
Segment C
3
SD
SD
Out
Segment D
4
SE
SE
Out
Segment E
5
SF
SF
Out
Segment F
6
SG
SG
Out
Segment G
7
P4
AP
Out
8
P0
NC
—
NC
9
P1
NC
—
NC
10
P2
DP
Out
Decimal point
11
P3
ID
Out
Indicator
12
MODR
VCC
—
+5V
13
CFSR
CFSR
In
Clerk key, Feed key, Switch
return signal
return signal
14
KEX0
NC
Out
NC
15
KEX1
NC
Out
NC
16
RQ
GND
—
GND
17
SKR0
VCC
—
+5V
18
ST0
ST0
Out
Key strobe signal
19
ST1
ST1
Out
Key strobe signal
20
ST2
ST2
Out
Key strobe signal
21
ST3
ST3
Out
Key strobe signal
22
POFF
POFF
In
Power off signal
23
STOP
STOP
In
STOP signal
24
DDIG
VCC
—
+5V
Pin
No.
Symbol
Signal
name
In/
Out
Function
25
DCS
DCS
—
Dot display controller chip select
DCS
DCS
26
VCC
VCKDC
—
+5V
27
SCK
SCK
In
Clock signal
28
HTS
HTS
In
Key data from host
29
STH
STH
Out
Key data to host
30
SDISP
GND
—
GND
31
BUZZ
BUZZ
Out
Buzzer
32
DSCK
DSCK
—
Dot display controller SCK
33
SRES
RESET
Out
Reset signal
34
DS0
DSO
—
Dot display controller SO
35
SHEN
SHEN
Out
Shift enable signal
36
IRQ
KRQ
Out
Key request signal
37
KR0
KR0
In
Key return signal
38
KR1
KR1
In
Key return signal
39
KR2
KR2
In
Key return signal
40
KR3
KR3
In
Key return signal
41
RESET
CKDCR
In
CKDC reset signal
42
OSC2
OSC2
—
Clock
43
OSC1
OSC1
—
Clock
44
GND
GND
—
GND
45
CL1
CL1
—
Time clock
46
CL2
CL2
—
Time clock
47
TEST
VCKDC
—
+5V
48
G0
G1
Out
Display digit signal
49
G1
G2
Out
Display digit signal
50
G2
G3
Out
Display digit signal
51
G3
G4
Out
Display digit signal
52
G4
G5
Out
Display digit signal
53
G5
G6
Out
Display digit signal
54
G6
G7
Out
Display digit signal
55
G7
G8
Out
Display digit signal
56
G8
G9
Out
Display digit signal
57
G9
G10
Out
Display digit signal
58
G10
G11
Out
Display digit signal
59
G11
NC
Out
NC
60
PO0
NC
NC
61
PO1
NC
NC
62
PO2
NC
—
NC
63
PO3
NC
—
NC
64
SA
SA
—
Segment A
2-4. LCD controller (M66271FB)
1) Pin configration
9
78
66
67
69
70
71
72
68
11
7
6
5
4
3
2
78
66
67
69
70
71
72
68
11
7
6
5
4
3
2
31
30
29
28
27
26
22
21
20
19
18
17
16
15
62
61
30
29
28
27
26
22
21
20
19
18
17
16
15
62
61
14
60
59
58
57
56
55
54
53
50
49
48
47
46
45
44
43
77
63
52
42
34
23
8
12
79
76
74
73
75
32
39
38
37
36
33
51
80
65
1
40
35
24
13
25
64
41
10
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
M
LCDENB
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
M
LCDENB
MPUCLK
OSC1
CP
LP
UD0
UD1
UD2
UD3
FLM
UD1
UD2
UD3
FLM
RESET
WAIT
MCS
RD
LWR
HWR
IOCS
MP
USEL
OSC2
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
VS
S
BH
E
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
VD
D
VD
D
VD
D
VD
D
VD
D
VD
D
VD
D
Click on the first or last page to see other UP-600 / UP-700 (serv.man25) service manuals if exist.