Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

22.1.2

Block Diagram

Figure 22.1 shows a block diagram of the prescalar unit.
Stable oscillation
wait time count output
17
2
Prescalar S
/131072 to /2
MSB
IC pin
Interrupt
request
[Legend]
ICR1
PCSR
IC
TMOW
Rev. 2.0, 11/00, page 432 of 1037
12
6 bits
2
18-bit free running counter (FRC)
15
2
8 bits
ICR1
Prescalar W
Internal data bus
: Input capture register 1
: Prescalar unit control/status register
: Input capture input pin
: Frequency division clock output pin
Figure 22.1 Block Diagram of Prescalar Unit
PWM3
PWM2
PWM1
PWM0
7
8 bits
2
8
2
/32
w/128
MSB
5-bit counter
PCSR
8
2
LSB
/4
/8
/16
w/32
w/16
w/8
w/4
LSB
TMOW
pin