HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 417

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

14.4
There is one source of TMU interrupts: underflow interrupts (TUNI).
14.4.1
The UNF bit is set to 1 when the TCNT underflows. Figure 14.5 shows the timing.
14.4.2
The status flag can be cleared by writing 0 from the CPU. Figure 14.6 shows the timing.
Peripheral address bus
Interrupts
Status Flag Set Timing
Status Flag Clear Timing
Underflow
TCNT
signal
TUNI
UNF
Pφ
UNF
Pφ
Figure 14.6 Status Flag Clear Timing
H'00000000
Figure 14.5 UNF Set Timing
T1
TCR write cycle
TCR address
TCOR value
T2
Rev. 1.00, 02/04, page 379 of 804
T3