FM30C256-S datasheet(8/18 Pages) ETC

Nome de Peças	FM30C256-S

Descrição Electrónicos	256Kb Data Collector

Download	18 Pages

Scroll/Zoom	100%

Fabricante Electrônico	ETC [List of Unclassifed Manufacturers]

Página de início

Logo

8 / 18 page

FM30C256

Rev 2.1

Dec. 2002

Page 8 of 18

Tamper Detection and Time Stamp

The TIN pin is a battery-backed input that is used to

detect a tamper event in the system. When a rising

edge occurs on TIN, this Tamper Detect event is

recorded in the MSB of register 0. This action will

occur only when either VBAK or VDD is applied. Any

further activity on TIN, such as a falling edge, will be

ignored. The user is responsible for reading and

clearing the Tamper flag. Clearing the Tamper flag

allows the TIN to detect another rising edge. The

tamper flag can only be read or cleared when VDD

≥

4.5V. On a power-up without battery, this bit is set to

zero.

The tamper input TIN can be used to timestamp the

exact time a tamper event occurs. This feature can be

enabled by setting the timestamp enable bit TSEN in

the calibration control register (RTC address 1, bit

D6). At power-up, TSEN is cleared and must be set

by the user. When a rising edge occurs on TIN and

the TSEN bit is set, the date and time of the event

will be recorded. The current time is loaded into the

timekeeping registers. When the system is checked

for a tamper event, the time of the event can be read.

After a tamper event, the timekeeping registers can

be overwritten if the R bit is set before reading the

timekeeping registers. To prevent overwriting the

timestamp, the control register should be read first to

check that the tamper bit is set. If it is set, the

timekeeping registers should be read to collect the

time of the last tamper event. Checking for a tamper

event before setting the R bit will ensure accurate

tamper timestamp information. If the TSEN bit is

not set, then a rising edge on TIN will not trigger a

timestamp.

System Reset Control

The /RST pin allows the user to easily control a

system level reset function. It is an open drain

output and requires an external pullup resistor to

VDD for proper operation. When VDD is within the

specified operating range, /RST output is tri-stated

and pulled to VDD by the external resistor. If VDD

drops below the reset trip point voltage level (VTP)

and remains below this level for the VTP noise

immunity duration (tRNR), the /RST pin will be

driven low. It will continue to drive low until VDD

falls below the VRST level. When VDD rises again

above VTP, /RST will continue to drive low for a

duration (tRPU) to ensure a robust system reset at a

reliable VDD level. After tRPU has been met, the /RST

pin tri-states and is pulled high by the external

pullup resistor. Refer to the figure on page 16 for a

graphical description of the /RST function and

timing.

9

512.0189

512.0211

36.90

41.23

001001

10

512.0211

512.0233

41.24

45.57

001010

11

512.0233

512.0256

45.58

49.91

001011

12

512.0256

512.0278

49.92

54.25

001100

13

512.0278

512.0300

54.26

58.59

001101

14

512.0300

512.0322

58.60

62.93

001110

15

512.0322

512.0344

62.94

67.27

001111

16

512.0344

512.0367

67.28

71.61

010000

17

512.0367

512.0389

71.62

75.95

010001

18

512.0389

512.0411

75.96

80.29

010010

19

512.0411

512.0433

80.30

84.63

010011

20

512.0433

512.0456

84.64

88.97

010100

21

512.0456

512.0478

88.98

93.31

010101

22

512.0478

512.0500

93.32

97.65

010110

23

512.0500

512.0522

97.66

101.99

010111

24

512.0522

512.0544

102.00

106.33

011000

25

512.0544

512.0567

106.34

110.67

011001

26

512.0567

512.0589

110.68

115.01

011010

27

512.0589

512.0611

115.02

119.35

011011

28

512.0611

512.0633

119.36

123.69

011100

29

512.0633

512.0656

123.70

128.03

011101

30

512.0656

512.0678

128.04

132.37

011110

31

512.0678

512.0700

132.38

136.71

011111

Nº de peça semelhante - FM30C256-S

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
RFE international	FM300	87Kb / 1P	FUSIBLE RESISTORS FM, FKN, & FSQ Series: Fusible
Extech Instruments Corp...	FM300	95Kb / 1P	Desktop Formaldehyde (CH2O or HCHO) Monitor
Rectron Semiconductor	FM3000	217Kb / 7P	GENERAL-PURPOSE PLASTIC RECTIFIERS
Rectron Semiconductor	FM3000W	128Kb / 6P	HIGH VOLTAGE RECTIFIER VOLTAGE RANGE 1200 to 3500 Volts CURRENT 0.2 to 0.5 Ampere
SHENZHEN FUMAN ELECTRON...	FM3004	153Kb / 4P	USB charge controller

More results

Descrição semelhante - FM30C256-S

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Advantech Co., Ltd.	ESRP-PCS-UNO420	814Kb / 2P	Edge Data Collector
	ESRP-PCS-WISE710	1Mb / 2P	Edge Data Collector
	SRP-IFS210-D36TAE	312Kb / 2P	Environment Data Collector 26-Jan-2022
	ESRP-CNC-UNO1372	1,009Kb / 2P	Edge Data Collector
Generalplus Technology ...	GPC252A	438Kb / 17P	256KB Sound Controller
Generalplus Technology ...	GPL133A	447Kb / 20P	256KB LCD CONTROLLER
Analog Devices	ADCLK914BCPZ-WP	304Kb / 12P	Ultrafast, SiGe, Open-Collector HVDS Clock/Data Buffer REV. A
Analog Devices	ADCLK914	302Kb / 11P	Ultrafast, SiGe, Open-Collector HVDS Clock/Data Buffer
Renesas Technology Corp	R1LP5256E	356Kb / 13P	256Kb Advanced LPSRAM
Generalplus Technology ...	GPC251A1	441Kb / 16P	256KB Sound Controller

More results

FM30C256-S Folha de dados(PDF) 8 Page - List of Unclassifed Manufacturers

FM30C256-S Folha de dados(HTML) 8 Page - List of Unclassifed Manufacturers

Nº de peça semelhante - FM30C256-S

Descrição semelhante - FM30C256-S

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Folha de dados Download

Ligação URL