PD17225_15 Datasheet, PDF (33/86 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

µPD17225, 17226, 17227, 17228
Figure 5-1. Configuration of 8-bit Timer and Remote Controller Carrier Generator Circuit
Data buffer
Internal bus
RF : 33H
TMEN TMRES TMCK1 TMCK0
8-bit timer
fX/32
fX/64
fX/256
Selector
RQ
S
8-bit modulo register
TMM
Comparator
8-bit counter
TMC
IRQTM
fX/2 SW
7-bit counter
Comparator
bit 7
×
7-bit modulo register
NRZLTMM
Remote controller carrier generator circuit
RF : 11H
NRZBF
RF : 12H
NRZ
7-bit counter
bit 7
0
fixed
Comparator
7-bit modulo register
NRZHTMM
Remark TMM, TMC, NRZLTMM, and NRZHTMM are peripheral registers.
Data Sheet U12643EJ2V0DS00
REM
31