VR4102 datasheet(346/701 Pages) NEC

346 / 701 page

CHAPTER 16 RTC (REALTIME CLOCK UNIT)

346

(2) RTCL2HREG (0x0B00 00DA)

Bit

D15

D14

D13

D12

D11

D10

Name

Reserved

R/W

RRR

RTCRST

Other resets

Note

Bit

D6D5

D4D3D2

Name

RTCL2P[23]

RTCL2P[22]

RTCL2P[21]

RTCL2P[20]

RTCL2P[19]

RTCL2P[18]

RTCL2P[17]

RTCL2P[16]

R/W

RTCRST

Other resets

Note

Bit

Name

Function

D[15:8]

Reserved

Write 0 when writing. 0 is returned after a read.

D[7:0]

RTCL2P[23:16]

[23:16] for RTCLong2 counter cycle

Note

Previous value is retained

Use these registers to set the RTCLong2 counter cycle. The RTCLong2 counter begins its countdown at the

value written to these registers.

A write operation is valid once values have been written to both registers (RTCL2LREG and RTCL2HREG).

Cautions 1.

The RTC unit is stopped when all zeros are written.

Any combined setting of “RTCL2HREG = 0x0000” and

“RTCL2LREG = 0x0001, 0x0002,

0x0003, 0x0004” is prohibited.

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