17 IR REMOTE CONTROLLER (REMC3)
S1C17M20/M21/M22/M23/M24/M25
Seiko Epson Corporation
17-1
TECHNICAL MANUAL (Rev. 1.0)
17 IR Remote Controller (REMC3)
17.1 Overview
The REMC3 circuit generates infrared remote control output signals. This circuit can also be applicable to an EL
lamp drive circuit by adding a simple external circuit.
The features of the REMC3 are listed below.
• Outputs an infrared remote control signal.
• Includes a carrier generator.
• Flexible carrier signal generation and data pulse width modulation.
• Automatic data setting function for continuous data transmission.
• Output signal inverting function supporting various formats.
• EL lamp drive waveform can be generated for an application example.
Figure 17.1.1 shows the REMC3 configuration.
Table 17.1.1 REMC3 Channel Configuration of S1C17M20/M21/M22/M23/M24/M25
Item
S1C17M20/M23
S1C17M21/M24
S1C17M22/M25
24-pin package
32-pin package
Number of channels
1 transmitter channel
REMC3
Carrier signal
generator
Data signal
generator
DBCNT[15:0]
CLKSRC[1:0]
CLKDIV[3:0]
Clock
generator
DBRUN
MODEN
DBLENBSY
CLK_REMC3
REMO
Interrupt
control circuit
CRPER[7:0]
CRDTY[7:0]
CARREN
PRESET
PRUN
DBLEN[15:0]
APLEN[15:0]
BUFEN
APLENBSY
REMCRST
DBCNTRUN
REMOINV
TRMD
DBIE
APIE
DBIF
APIF
Interrupt
controller
Inter
nal data
bu
s
CLPLS
OUTINVEN
Figure 17.1.1 REMC3 Configuration
17.2 Input/Output Pins and External Connections
17.2.1 Output Pin
Table 17.2.1.1 shows the REMC3 pin.
Table 17.2.1.1 REMC3 Pin
Pin name
I/O
*
Initial status
*
Function
REMO
O
O (L)
IR remote controller transmit data output
CLPLS
O
O (L)
IR remote controller clear pulse output
*
Indicates the status when the pin is configured for the REMC3.