upd6p9 Renesas Electronics Corporation., upd6p9 Datasheet - Page 33

• Manufacturer Part Number: upd6p9
• Description: 4-bit Single-chip Microcontroller For Infrared Remote Control Transmission
• Manufacturer: Renesas Electronics Corporation.

8. APPLICATION CIRCUIT EXAMPLE
Example of Application to System
• Remote-control transmitter (48 keys accommodated, mode selection switch accommodated)
Note S
2
: Set to STOP mode release disabled
+
Mode select
switch
K
K
S
S
REM
V
X
X
GND
S
I/O6
I/O7
0
1
DD
OUT
IN
2
/LED
Note
Data Sheet U15144EJ1V1DS
K
K
K
K
K
K
I/O5
I/O4
I/O3
I/O2
I/O1
I/O0
K
K
K
K
I3
I2
I1
I0
Key matrix
8 × 6 = 48 keys
µ PD6P9
33