HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 303

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.3
9.3.1
8TCNT, TCORA, TCORB, 8TCR, and 8TCSR are 8-bit registers. These registers are connected to
the CPU by an internal 16-bit data bus and can be read and written a word at a time or a byte at a
time.
Figures 9.2 and 9.3 show the operation in word read and write accesses to 8TCNT.
Figures 9.4 to 9.7 show the operation in byte read and write accesses to 8TCNT0 and 8TCNT1.
C
U
C
U
C
U
P
P
P
Internal data bus
Internal data bus
Internal data bus
Figure 9.4 8TCNT0 Access Operation (CPU Writes to 8TCNT0, Upper Byte)
CPU Interface
8-Bit Registers
H
H
H
L
L
L
Figure 9.2 8TCNT Access Operation (CPU Writes to 8TCNT, Word)
Figure 9.3 8TCNT Access Operation (CPU Reads 8TCNT, Word)
Bus
interface
Bus
interface
Bus
interface
8TCNTH0 8TCNTL1
8TCNT0 8TCNT1
8TCNT0 8TCNT1
Rev.4.00 Aug. 20, 2007 Page 259 of 638
H
H
H
L
L
L
Module data bus
Module data bus
Module data bus
REJ09B0395-0400
9. 8-Bit Timers