HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 407

• Manufacturer Part Number: HD6437101
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

(3) Initial Settings
In the operating modes, there are five registers that require initialization.
Make the following register settings before setting the operating mode with bits MD1 and MD0 in
the timer mode register (TMDR).
Set the timer period buffer register (TPBR) to 1/2 the PWM carrier period, set dead time Td in the
timer dead time data register (TDDR) (when outputting an ideal waveform, Td = H'0000), and set
{TPBR value + 2Td} in the timer period data register (TPDR).
Set {PWM duty initial value – Td} in the free write operation addresses for TBRU to TBRW.
(1/2 period)
TDCNT
(TBR)
TDDR
TBRU
TBRV
TBRW
TDDR
TDDR
TPBR
(Td)
(Td)
(Td)
Figure 13.4 Examples of Counter and Register Operations
2
2
+
+
Up-count
+
(1/2 period + 2Td)
TGRUU
TGRVU
TGRWU
TGRU
TGRV
TGRW
TGRUD
TGRVD
TGRWD
(2Td)
TCNT
TPDR
compare match
(TBR + 2Td)
(TBR + Td)
(TBR)
TCNT
halt
Compared during
up-count
Compared during
down-count
Rev.1.00 Sep. 18, 2008 Page 373 of 522
Section 13 Motor Management Timer (MMT)
Up-count
match
Down-count
match
Compared during
up-count
Constantly
compared
Compared during
down-count
REJ09B0069-0100
down-count
up-count
compare
compare