HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 570

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 Timer Unit (TMU)
14.4
There is one source of TMU interrupts: underflow interrupts (TUNI).
14.4.1
The UNF bit is set to 1 when TCNT underflows. Figure 14.6 shows the timing.
14.4.2
The status flag can be cleared by writing 0 from the CPU. Figure 14.7 shows the timing.
Rev. 3.00 Jan. 18, 2008 Page 508 of 1458
REJ09B0033-0300
Peripheral address bus
Interrupts
Status Flag Set Timing
Status Flag Clear Timing
Underflow
TCNT
signal
TUNI
UNF
UNF, ICPF
Pφ
Pφ
Figure 14.7 Status Flag Clear Timing
H'00000000
Figure 14.6 UNF Set Timing
T1
TCR write cycle
TCR address
(TCOR value)
T2
T3