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參數(shù)資料
| 型號： | UPD6122G-002 |
| 廠商： | NEC Corp. |
| 英文描述： | REMOTE CONTROL TRANSMISSION CMOS IC |
| 中文描述： | 遙控傳輸CMOS集成電路 |
| 文件頁數(shù)： | 6/28頁 |
| 文件大?。?/td> | 170K |
| 代理商： | UPD6122G-002 |
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μ
PD6121, 6122
6
3. CUSTOM CODE (CUSTOM CODE, CUSTOM CODE’) SETTING
The custom code is set in two different ways depending on whether Ver I or Ver II specifications are employed.
Figure 3-1. Custom Code Setting
Ver I
Ver II
Remark
The
μ
PD6121-001 has Ver I specifications and is pin-compatible with the
μ
PD1943G, and the
μ
PD6122-
001 has Ver I specifications and is pin-compatible with the
μ
PD6102G.
If used as pin-compatible products, please note the following points.
1 Connect the SEL pin to V
DD
.
2 Change the capacitance of the capacitor connected to the resonator connection pin (Refer to
9. ELECTRICAL SPECIFICATIONS
).
A custom code setting example is shown below.
3.1
Standard versions with Ver I specs. (
μ
PD6121-001,
μ
PD6122-001)
Each of the higher 8 bits of the custom code is set to “1” when a diode is connected between the CCS pin and
the corresponding KI/O pin, and is set to “0” when no diode is connected. If a pull-up resistor is connected to
the KI/O pin corresponding to one of the lower 8 bits of the custom code’, the bit is first set to “1”. Based on the
1’s information of the lower 8 bits of the custom code’, the corresponding bit of the higher 8 bits of the custom
code is then captured and not inverted. The non-inverted value is finally overwritten to the corresponding bit of
the lower 8 bits of the custom code’. The inverse occurs when no pull-up resistor is connected.
It follows from the above that the custom code can be set in 65,536 different ways depending on whether or not
a diode and/or pull-up resistor are present.
Please refer to
Figure 3-2 Example of Custom Code Setting for Ver I Specifications (
μ
PD6121-001, 6122-
001)
.
Figure 3-2. Example of Custom Code Setting for Ver I Specifications (
μ
PD6121-001, 6122-001)
Configuration example
Higher 8 bits of custom code
Fixed by external diode bit
C
0
, C
1
, C
2
... Fixed by connecting CCS pin and either one of
pins KI/O
0
to KI/O
7
C
3
to C
7
...
Fixed by absence or presence of external pull-up
resistor for KI/O
6
, KI/O
7
Lower 8 bits of custom code’
Fixed by external pull-up resistor bit
Fixed by external pull-up resistor (KI/O
0
to
KI/O
5
) bit
CCS
KI/O
0
KI/O
1
KI/O
2
KI/O
3
KI/O
4
KI/O
5
KI/O
6
KI/O
7
V
DD
V
DD
*
*
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