D6122G NEC, D6122G Datasheet - Page 16

• Manufacturer Part Number: D6122G
• Description: Search -----> UPD6122G
• Manufacturer: NEC

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16
1
2
Continuous command transmission can be performed for keys whose KI/O output lines have received diode
D input
Notes 1. Double-key transmission cannot be performed.
Caution
Continuous command transmission for all keys
REM output is input to KI
Continuous command transmission for key output lines
REM output is input to KI/O with diode D.
220 pF
220 pF
Note 2
Ceramic resonator
Ceramic resonator
Figure 7-2. Application Circuit for Continuous Command Transmission Mode
2. If the KI/O
CCS KI
CCS KI
.
When the voltage drop of the REM output is large, the signal is not transmitted accurately.
Therefore, keep the REM output current within 1 mA.
OSCO OSCI
OSCO OSCI
double-input key transmission is not performed (D
KI
KI
455 kHz
455 kHz
3
3
2
2
KI
KI
1
1
KI
KI
Custom code selection diode
0
0
5
KI/O
KI/O
output line (double-input key) is in the continuous command transmission mode,
220 pF
220 pF
0
0
0
KI/O
KI/O
with diode D.
µPD6121G-001
µPD6121G-002
V
µPD6121G-001
µPD6121G-002
V
V
V
DD
DD
Custom code selection diode
DD
1
DD
1
KI/O
KI/O
2
2
KI/O
V
V
KI/O
DD
DD
100
100
3
3
KI/O
KI/O
LMP
LMP
4
4
KI/O
KI/O
Transmission
display
Transmission
display
5
5
Note 1
KI/O
KI/O
Diode D
6
6
KI/O
KI/O
REM
REM
47 µF
V
V
47 µF
SS
SS
7
7
5
Diode D
Key matrix
does not become 1).
+
-
+
-
2.2 k
2.2 k
Custom code selection resistor
Custom code selection resistor
12 k
12 k
82
82
PD6121, 6122