h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 324

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 11 16-Bit Free-Running Timer
11.1.2
Figure 11.1 shows a block diagram of the free-running timer.
Rev. 4.00 Jun 06, 2006 page 270 of 1004
REJ09B0301-0400
External
clock source
Legend:
OCRA, B:
FRC:
ICRA, B, C, D:
TCSR:
FTCI
FTOA
FTOB
FTIA
FTIB
FTIC
FTID
Block Diagram
Figure 11.1 Block Diagram of 16-Bit Free-Running Timer
Clock select
Control
Output compare register A, B (16 bits)
Free-running counter (16 bits)
Input capture register A, B, C, D (16 bits)
Timer control/status register (8 bits)
logic
Internal
clock sources
Compare-match M
Input capture
Compare-
match A
Compare-
match B
/2
/8
/32
ICIA
ICIB
ICIC
ICID
OCIA
OCIB
FOVI
Clock
Overflow
Clear
Comparator M
Interrupt signals
OCRA R/F (H/L)
Comparator A
Comparator B
OCRA (H/L)
OCRB (H/L)
OCRDM L
FRC (H/L)
ICRA (H/L)
ICRB (H/L)
ICRC (H/L)
ICRD (H/L)
TOCR
TCSR
TIER
TCR
TIER:
TCR:
TOCR:
+
+
1
2
Timer interrupt enable register (8 bits)
Timer control register (8 bits)
Timer output compare control
register (8 bits)
Internal
data bus