SB710 datasheet(72/88 Pages) AMD

72 / 88 page

AMD SB710 Databook

45215 Rev. 1.60 November 09

Electrical Characteristics

11.4

Reset Signal Requirements

Table 11-7: Reset Signal Requirements

Pin Name

Assertion requirements

Comments

SYS_RST#

Must be asserted for 10ms minimum.

At deassertion, the SYS_RST#

signal will not be sampled by the

internal logic for a period of 32 ms

as it first goes through the internal

debouncing circuit.

RSMRST#

Must be asserted for 10ms minimum.

At deassertion, the RSMRST# signal

will not be sampled by the internal

logic for a period of 32 ms as it first

goes through the internal

debouncing circuit.

KBRST#

Must be asserted for 30 ns minimum.

The KBRST# should be de-asserted

before A_RST# and LDT_RST# are de-

asserted.

—

11.5

RTC Battery Current Consumption

The RTC battery current consumption is estimated as follows:

Table 11-8: RTC Battery Current Consumption

RTC Battery Current

Power State

Typical

Maximum

G3 (Off)

< 0.5 µA

< 4 µA

S0-S5

< 0.2 µA

RTC battery life is calculated using the rated capacity of the battery and typical current numbers. The

typical batteries used for RTC are normally rated for 170 mAh and the worst case current consumption for

the SB710 is 4.0 µA. Thus, the life of battery will be calculated as follows:

170,000 µAh / 4 µA = 42,500 h = 4.8 years

SB710 Datasheet(PDF) 72 Page - Advanced Micro Devices

SB710 Datasheet(HTML) 72 Page - Advanced Micro Devices

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

Datasheet Download

Link URL