Figure 9.1 Block Diagram Of Timer A; Table 9.2 Pin Configuration - Renesas H8/3847R Series Hardware Manual

2. Block Diagram
Figure 9.1 shows a block diagram of timer A.
φ
1/4
W
TMOW
φ
Legend:
TMA: Timer mode register A
TCA: Timer counter A
IRRTA: Timer A overflow interrupt request flag
PSW: Prescaler W
PSS: Prescaler S
CWOSR: Subclock output select register
Note: * Can be selected only when the prescaler W output (φ
3. Pin Configuration
Table 9.2 shows the timer A pin configuration.
Table 9.2 Pin Configuration
Name Abbr.
Clock output TMOW
PSW
φ /4
W
φ
/32
W
φ
φ /128
/16
W
W
φ
/8
W
φ
/4
W
φ/32
φ/8192, φ/4096, φ/2048,
φ/16
φ/512, φ/256, φ/128,
φ/8
φ/32, φ/8
φ/4
PSS

Figure 9.1 Block Diagram of Timer A

I/O Function
Output Output of waveform generated by timer A output circuit
CWORS
TMA
TCA
/128) is used as the TCA input clock.
W
Rev. 6.00 Aug 04, 2006 page 259 of 680
Section 9 Timers
IRRTA
REJ09B0145-0600