HD6433636SW datasheet(214/418 Pages) RENESAS

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9.5.2

Timer Mode Register Y (TMY)

Bit

76543210

TMY7

————

TMY2

TMY1

TMY0

Initial value

01111000

Read/Write

R/W

————

R/W

Timer mode register Y (TMY) is an 8-bit read/write register that performs auto-reload

function selection and input clock selection.

Upon reset, TMY is initialized to H'78.

Bit 7—Auto-Reload Function Select (TMY7): Bit 7 selects whether timer Y is used as an

interval timer or an auto-reload timer.

Bit 7: TMY7

Description

Interval function selected

(initial value)

Auto-reload function selected

Bits 6 to 3—Reserved Bits: Bits 6 to 3 are reserved bits. They are always read as 1 and

cannot be modified.

Bits 2 to 0—Clock Select (TMY2 to TMY0): Bits 2 to 0 select the clock input to TCY. For

external event input, the rising or falling edge can be selected.

Bit 2: TMY2

Bit 1: TMY1

Bit 0: TMY0

Description

Count on internal clock: ø/8192 (initial value)

Count on internal clock: ø/2048

Count on internal clock: ø/512

Count on internal clock: ø/256

Count on internal clock: ø/64

Count on internal clock: ø/16

Count on internal clock: ø/4

Count on external event (TMCIY) rising/falling

edge*

Note: * External event edge selection is set with bit IEG2 in the interrupt edge select register

(IEGR). For details, see Interrupt Edge Select Register (IEGR), in 3.3.2.

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