HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 414
HD6417660
Manufacturer Part Number
HD6417660
Description
Renesas 32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417660.pdf
(846 pages)
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14.2.3
Timer Constant Registers (TCOR)
The TCOR registers set the value to be set in TCNT when TCNT underflows.
The TCOR registers are 32-bit readable/writable registers. Their initial value is H'FFFFFFFF.
14.2.4
Timer Counters (TCNT)
TCNT counts down upon input of a clock. The clock input is selected using the TPSC1 and
TPSC0 bits in the timer control register (TCR).
When a TCNT count-down results in an underflow (H'00000000 → H'FFFFFFFF), the underflow
flag (UNF) in the timer control register (TCR) of the relevant channel is set. The TCOR value is
simultaneously set in TCNT itself and the count-down continues from that value.
Initial value of the TCNT is H'FFFFFFFF.
Rev. 1.00, 02/04, page 376 of 804
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