HD64F36049 datasheet(179/562 Pages) RENESAS

Part #	HD64F36049

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Tiny Series

PDF	562 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

Logo

179 / 562 page

Section 10 Realtime Clock (RTC)

Rev. 3.00 Mar. 15, 2006 Page 147 of 526

REJ09B0060-0300

Section 10 Realtime Clock (RTC)

The realtime clock (RTC) is a timer used to count time ranging from a second to a week. Figure

10.1 shows the block diagram of the RTC.

10.1

Features

• Counts seconds, minutes, hours, and day-of-week

• Start/stop function

• Reset function

• Readable/writable counter of seconds, minutes, hours, and day-of-week with BCD codes

• Periodic (seconds, minutes, hours, days, and weeks) interrupts

• 8-bit free running counter

• Selection of clock source

PSS

32-kHz

oscillator

circuit

RTCCSR

RSECDR

RMINDR

RWKDR

Clock count

control circuit

Interrupt

control circuit

Interrupt

RTCCR1

RHRDR

RTCCR2

1/4

TMOW

[Legend]

RTCCSR:

RSECDR:

RMINDR:

RHRDR:

RWKDR:

RTCCR1:

RTCCR2:

PSS:

Clock source select register

Second date register/free running counter data register

Minute date register

Hour date register

Day-of-week date register

RTC control register 1

RTC control register 2

Prescaler S

Figure 10.1 Block Diagram of RTC

HD64F36049 Datasheet(PDF) 179 Page - Renesas Technology Corp

HD64F36049 Datasheet(HTML) 179 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

Datasheet Download

Link URL