HD404324FS datasheet(54/103 Pages) RENESAS

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HD404054 Series/HD404094 Series

• Timer mode register C2 (TMC2: $014): Three-bit read/write register that selects the timer C output

mode as shown in figure 35. It is reset to $0 by MCU reset.

Bit

Initial value

Read/Write

Bit name

—

Not used

R/W

TMC22

R/W

TMC20

R/W

TMC21

Timer mode register C2 (TMC2: $014)

TMC22

TMC21

R31/TOC mode selection

R31

TOC

—

TOC

R31 port

Toggle output

0 output

1 output

Inhibited

PWM output

TMC20

Figure 35 Timer Mode Register C2 (TMC2)

• Timer write register C (TWCL: $00E, TWCU: $00F): Write-only register consisting of a lower digit

(TWCL) and an upper digit (TWCU) as shown in figures 36 and 37. The lower digit is reset to $0 by

MCU reset, but the upper digit value is invalid.

Timer C is initialized by writing to timer write register C (TWCL: $00E, TWCU: $00F). In this case,

the lower digit (TWCL) must be written to first, but writing only to the lower digit does not change the

timer C value. Timer C is initialized to the value in timer write register C at the same time the upper

digit (TWCU) is written to. When timer write register C is written to again and if the lower digit value

needs no change, writing only to the upper digit initializes timer C.

Bit

Initial value

Read/Write

Bit name

TWCL3

TWCL2

TWCL0

TWCL1

Timer write register C (lower digit) (TWCL: $00E)

Figure 36 Timer Write Register C Lower Digit (TWCL)

HD404324FS Datasheet(PDF) 54 Page - Renesas Technology Corp

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