D12320VF25IV Datasheet, PDF (508/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 10 16-Bit Timer Pulse Unit (TPU)
10.2.6 Timer Counters (TCNT)
Channel 0: TCNT0 (up-counter)
Channel 1: TCNT1 (up/down-counter^*)
Channel 2: TCNT2 (up/down-counter^*)
Channel 3: TCNT3 (up-counter)
Channel 4: TCNT4 (up/down-counter^*)
Channel 5: TCNT5 (up/down-counter^*)
Bit
: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Initial value : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W
: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Note: * These counters can be used as up/down-counters only in phase counting mode or when
counting overflow/underflow on another channel. In other cases they function as up-
counters.
The TCNT registers are 16-bit counters. The TPU has six TCNT counters, one for each channel.
The TCNT counters are initialized to H'0000 by a reset and in hardware standby mode.
The TCNT counters cannot be accessed in 8-bit units; they must always be accessed as a 16-bit
unit.
Rev.6.00 Sep. 27, 2007 Page 476 of 1268
REJ09B0220-0600