HD404458 datasheet(67/122 Pages) RENESAS

67 / 122 page

HD404459 Series

Bit

Initial value

Read/Write

Bit name

Undefined

TWBU3

Undefined

TWBU2

Undefined

TWBU0

Undefined

TWBU1

Timer write register B (upper digit) (TWBU: $00B)

Figure 48 Timer Write Register B Upper Digit (TWBU)

• Timer read register B (TRBL: $00A, TRBU: $00B): Read-only register consisting of a lower digit

(TRBL) and an upper digit (TRBU) that holds the count of the timer B upper digit.

The upper digit (TRBU) must be read first, which will result in the count of the timer B upper digit to

be obtained and the count of the timer B lower digit to be latched to the lower digit (TRBL). Then by

reading TRBL, the count of timer B can be obtained when TRBU is read.

Bit

Initial value

Read/Write

Bit name

Undefined

TRBL3

Undefined

TRBL2

Undefined

TRBL0

Undefined

TRBL1

Timer read register B (lower digit) (TRBL: $00A)

Figure 49 Timer Read Register B Lower Digit (TRBL)

Bit

Initial value

Read/Write

Bit name

Undefined

TRBU3

Undefined

TRBU2

Undefined

TRBU0

Undefined

TRBU1

Timer read register B (upper digit) (TRBU: $00B)

Figure 50 Timer Read Register B Upper Digit (TRBU)

HD404458 Datasheet(PDF) 67 Page - Renesas Technology Corp

HD404458 Datasheet(HTML) 67 Page - Renesas Technology Corp

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