HD404324FS datasheet(60/103 Pages) RENESAS

60 / 103 page

HD404054 Series/HD404094 Series

Registers for Timer D Operation: By using the following registers, timer D operation modes are selected

and the timer D count is read and written.

Timer mode register D1 (TMD1: $010)

Timer mode register D2 (TMD2: $015)

Timer write register D (TWDL: $011, TWDU: $012)

Timer read register D (TRDL: $011, TRDU: $012)

Port mode register C (PMRC: $025)

Detection edge select register 2 (ESR2: $027)

• Timer mode register D1 (TMD1: $010): Four-bit write-only register that selects the free-

running/reload timer function, input clock source, and the prescaler division ratio as shown in figure 41.

It is reset to $0 by MCU reset.

Writing to this register is valid from the second instruction execution cycle after the execution of the

previous timer mode register D1 (TMD1: $010) write instruction. Setting timer D’s initialization by

writing to timer write register D (TWDL: $011, TWDU: $012) must be done after a mode change

becomes valid.

When selecting the input capture timer operation, select the internal clock as the input clock source.

Bit

Initial value

Read/Write

Bit name

TMD13

TMD12

TMD10

TMD11

Timer mode register D1 (TMD1: $010)

2048tcyc

512tcyc

128tcyc

32tcyc

8tcyc

4tcyc

2tcyc

TMD12

TMD10

TMD11

Input clock period and

input clock source

R40/EVND (external event input)

TMD13

Free-running/reload

timer selection

Free-running timer

Reload timer

Figure 41 Timer Mode Register D1 (TMD1)

HD404324FS Datasheet(PDF) 60 Page - Renesas Technology Corp

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