R8CSLASH2G datasheet(204/344 Pages) RENESAS

204 / 344 page

R8C/2G Group

17. Timers

Rev.1.00

Apr 04, 2008

Page 184 of 318

REJ09B0387-0100

Table 17.11

Real-Time Clock Mode Specifications

Item

Specification

Count source

fC4

Count operation

Increment

Count start condition

1 (count starts) is written to TSTART bit in TRECR1 register

Count stop condition

0 (count stops) is written to TSTART bit in TRECR1 register

Interrupt request generation

timing

Select any one of the following:

• Update second data

• Update minute data

• Update hour data

• Update day of week data

• When day of week data is set to 000b (Sunday)

TREO pin function

Programmable I/O ports or output of f2, fC, f4, f8 or, 1Hz

Read from timer

When reading TRESEC, TREMIN, TREHR, or TREWK register, the count

value can be read. The values read from registers TRESEC, TREMIN,

and TREHR are represented by the BCD code.

Write to timer

When bits TSTART and TCSTF in the TRECR1 register are set to 0 (timer

stops), the value can be written to registers TRESEC, TREMIN, TREHR,

and TREWK. The values written to registers TRESEC, TREMIN, and

TREHR are represented by the BCD codes.

Selectable functions

• 12-hour mode/24-hour mode switch function

• Counter precision adjustment function

• TREO pin select function

P0_4, P6_0, or P6_5 is selected by the TREOSEL bit in the PINSR3

R8C/2G 数据表(PDF) 204 Page - Renesas Technology Corp

R8C/2G 数据表(HTML) 204 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载