17 IR REMOTE CONTROLLER (REMC3)
S1C17M20/M21/M22/M23/M24/M25
Seiko Epson Corporation
17-7
TECHNICAL MANUAL (Rev. 1.0)
17.6 Application Example: Driving EL Lamp
The REMC3 can be used to simply drive an EL lamp as an application example. Figures 17.6.1 and 17.6.2 show an
example of an EL lamp drive circuit and an example of the drive waveform generated, respectively. For details of
settings and an example of components, refer to the Application Note provided separately.
R
1
R
3
+
Q
1
Q
2
L
1
D
1
V
EL
= 50–200 V
V
DD
REMO
EL lamp
External components
V
SS
S1C17
R
2
REMC3
CLPLS
Figure 17.6.1 Example of EL Lamp Drive Circuit
Writing 1 to REMDBCTL.PRUN
REMO
CLPLS
REMAPLEN.APLEN[15:0]
REMDBLEN.DBLEN[15:0]
REMCARR.CRPER[7:0]
REMCARR.CRDTY[7:0]
Figure 17.6.2 Example of Generated Drive Waveform
The REMO and CLPLS signals are output from the respective pins while the REMDBCTL.PRUN bit = 1. The dif-
ference between the setting values of the REMDBLEN.DBLEN[15:0] bits and REMAPLEN.APLEN[15:0] bits
becomes the CLPLS pulse width (high period).
17.7 Control Registers
REMC3 Clock Control Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
REMCLK
15–9 –
0x00
–
R
–
8
DBRUN
0
H0
R/W
7–4 CLKDIV[3:0]
0x0
H0
R/W
3–2 –
0x0
–
R
1–0 CLKSRC[1:0]
0x0
H0
R/W
Bits 15–9 Reserved
Bit 8
DBRUN
This bit sets whether the REMC3 operating clock is supplied in DEBUG mode or not.
1 (R/W): Clock supplied in DEBUG mode
0 (R/W): No clock supplied in DEBUG mode
Bits 7–4
CLKDIV[3:0]
These bits select the division ratio of the REMC3 operating clock.
Bits 3–2
Reserved