hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 305

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Bits 6 and 5: Counter up/down control (TMC6, TMC5)
Selects whether TCC up/down control is performed by hardware using UD pin input, or whether
TCC functions as an up-counter or a down-counter.
Bit 6
TMC6
0
0
1
Bits 4 and 3: Reserved bits
Bits 4 and 3 are reserved; they are always read as 1 and cannot be modified.
Bits 2 to 0: Clock select (TMC2 to TMC0)
Bits 2 to 0 select the clock input to TCC. For external event counting, either the rising or falling
edge can be selected.
Bit 2
TMC2
0
0
0
0
1
1
1
1
Note:
* The edge of the external event signal is selected by bit IEG1 in the IRQ edge select
Bit 1
TMC1
0
0
1
1
0
0
1
1
register (IEGR). See 1. IRQ edge select register (IEGR) in section 3.3.2 for details.
IRQ1 must be set to 1 in port mode register 1 (PMR1) before setting 111 in bits TMC2
to TMC0.
Bit 5
TMC5
0
1
*
Bit 0
TMC0
0
1
0
1
0
1
0
1
Description
TCC is an up-counter
TCC is a down-counter
Hardware control by UD pin input
UD pin input high: Down-counter
UD pin input low: Up-counter
Description
Internal clock: /8192
Internal clock: /2048
Internal clock: /512
Internal clock: /64
Internal clock: /16
Internal clock: /4
Internal clock:
External event (TMIC): rising or falling edge*
W
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Rev. 6.00 Aug 04, 2006 page 269 of 680
REJ09B0145-0600
Section 9 Timers
(initial value)
(initial value)
*: Don't care