M306H7MG-XXXFP Datasheet, PDF (244/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
14. EXPANSION FUNCTION
(6) Remote control transmission function
The career is synthesized to two kinds of pulses of external wave, and the remote control transmission circuit is
output from the microcomputer pin.
The specification of the remote control transmitter is shown in Table 14.5, The remote control transmission circuit
output wave form is shown in Figure 14.18, and The remote control transmission circuit block chart is shown in
Figure 14.19.
The feature is shown below.
• Career is a continuous pulse of the arbitrary width obtained by dividing the main clock (Figure 14.18 Wave
forms 2 and 3.)
• External wave is a shape of waves generated from the transmission data buffer with reading pin output value
("H"/"L") and the pulse width one by one (Figure 14.18 Wave form 4.)
• The shape of waves that can synthesize the career to external wave is output from the pin (Figure 14.18 Wave
form 5.)
Table 14.5 Specification of remote control transmission function
Item
Count source
Specifications
Carrier: Selection from f1 (There is not XIN dividing frequency), f2.5 (XIN 2.5
dividing frequency), and f8 (XIN 8 dividing frequency.)
External wave: Selection from f1 (There is not XIN dividing frequency), f8 (XIN
8 dividing frequency), f64 (XIN 64 dividing frequency), and f256
(XIN 256 dividing frequency.)
Count operation
(carrier)
Comparing of dividing
frequency (carrier)
Count operation
(external wave)
Comparing of dividing
frequency (external
wave)
Start of counting
condition
Count stop condition
Interrupt generation
timing
Remote control
transmission mode
Down count
The register for “H” width setting is read by standing up about the pulse, and
it continues the count.
The register for “L” width setting is read by standing up about the pulse, and
it continues the count.
“H” period and “L” period are 1 to 256.
Down count
Wave form output value (“H”/“L”) and the count value are read from the
remote control transmission data buffer with stand up/fall down of the pulse,
and the port output and the count are continued.
1 to 16384 (14bit)
The remote control transmission start bit is set to “1.”
The remote control transmission start bit is set to “0.”
After the untransmission data number reference bit is empty and the count
value is underflow
When external wave stand up/fall down (When the value of the interrupt
setting bit read from the remote control transmission data buffer is only 1. )
OR output of career and external wave
Only external wave is output (carrier none.)
Rev.2.10 Oct 25, 2006 Page 244 of 326
REJ03B0152-0210