HD6473837H Datasheet, PDF (207/562 Pages) Renesas Technology Corp – Hardware Manual

Table 9.9 Timer C Registers
Name
Timer mode register C
Timer counter C
Timer load register C
Abbrev.
R/W
TMC
R/W
TCC
R
TLC
W
Initial Value
H'18
H'00
H'00
Address
H'FFB4
H'FFB5
H'FFB5
9.4.2 Register Descriptions
Timer Mode Register C (TMC)
Bit
7
6
5
4
TMC7 TMC6 TMC5
—
Initial value
0
0
0
1
Read/Write
R/W
R/W
R/W
—
3
2
1
0
—
TMC2 TMC1 TMC0
1
0
0
0
—
R/W
R/W
R/W
TMC is an 8-bit read/write register for selecting the auto-reload function, counting direction, and
input clock.
Upon reset, TMC is initialized to H'18.
Bit 7—Auto-Reload Function Select (TMC7): Bit 7 selects whether timer C is used as an
interval timer or auto-reload timer.
Bit 7: TMC7
0
1
Description
Interval timer function selected
Auto-reload function selected
(initial value)
Bits 6 and 5—Counter Up/Down Control (TMC6 and TMC5): These bits select the counting
direction of timer counter C (TCC), or allow hardware to control the counting direction using pin
UD.
Bit 6: TMC6
0
1
Bit 5: TMC5
0
1
*
Note: * Don’t care
Description
TCC is an up-counter
(initial value)
TCC is a down-counter
TCC up/down control is determined by input at pin UD.
TCC is a down-counter if the UD input is high, and an up-
counter if the UD input is low.
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