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參數(shù)資料
| 型號(hào)： | ISL12008IB8Z |
| 廠(chǎng)商： | Intersil |
| 文件頁(yè)數(shù)： | 16/19頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC I2C LO-POWER 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 980 |
| 類(lèi)型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年 |
| 時(shí)間格式： | HH:MM:SS:hh（24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線(xiàn)串口 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.8 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
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6
FN6690.1
September 26, 2008
General Description
The ISL12008 device is a low power real time clock with
timing and crystal compensation, clock/calendar, power fail
indicator, software alarm, and intelligent battery backup
switching.
The oscillator uses an external, low-cost 32.768kHz crystal.
The real time clock tracks time with separate registers for
hours, minutes, seconds, and sub-seconds. The device has
calendar registers for date, month, year and day of the week.
The calendar is accurate through 2099, with automatic leap
year correction.
The ISL12008's powerful alarm can be set to any
clock/calendar value for a match. For example, every
minute, every Tuesday or at 5:23 AM on March 21. The
alarm status is available by checking the Status Register.
The device also offers a backup power input pin. This VBAT
pin allows the device to be backed up by battery or super
capacitor with automatic switchover from VDD to VBAT. The
entire ISL12008 device is fully operational from 2.7V to 5.5V
and the clock/calendar portion of the device remains fully
operational down to 1.8V in battery mode.
Pin Descriptions
X1, X2
The X1 and X2 pins are the input and output, respectively, of
an inverting amplifier. An external 32.768kHz quartz crystal is
used with the ISL12008 to supply a timebase for the real time
clock. Internal compensation circuitry provides high accuracy
over the operating temperature range from -40°C to +85°C.
This oscillator compensation network can be used to calibrate
Typical Performance Curves Temperature is +25°C, unless otherwise specified.
FIGURE 1. IBAT vs VBAT
FIGURE 2. IBAT vs TEMPERATURE AT VBAT = 3V
FIGURE 3. IDD1 vs TEMPERATURE
FIGURE 4. IDD1 vs VDD WITH LPMODE ON AND OFF
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.2
1.8
2.3
2.8
3.3
3.8
4.3
4.8
5.3
VBAT (V)
I BA
T
(A)
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
-40
-20
0
204060
80
TEMPERATURE (°C)
I BA
T
(A)
1.0
1.5
2.0
2.5
3.0
3.5
-40
-20
0
20406080
TEMPERATURE (°C)
I DD
(A)
VDD = 3.3V
VDD = 5V
0.5
1.0
1.5
2.0
2.5
3.0
3.5
1.82.3
2.8
3.3
3.84.3
4.85.3
VDD (V)
I CC
(
A
)
LP MODE OFF
LP MODE ON
FIGURE 5. STANDARD OUTPUT LOAD FOR TESTING THE
DEVICE WITH VDD = 5.0V
SDA
AND
FT/OUT
1533
Ω
100pF
5.0V
FOR VOL= 0.4V
AND IOL = 3mA
EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR VDD = 5V
ISL12008
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相關(guān)代理商/技術(shù)參數(shù) |
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| ISL12008IB8Z-T | 功能描述:實(shí)時(shí)時(shí)鐘 LW PWR RTC W/RESEAL 8LD RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12020 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Low Power RTC with VDD Battery Backed SRAM and Embedded Temp Compensation 【5ppm with Auto Day Light Saving |
| ISL12020CBZ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL12020IBZ | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Low Power RTC with VDD Battery Backed SRAM and Embedded Temp Compensation 【5ppm with Auto Day Light Saving |
| ISL12020M | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:Low Power RTC with Battery Backed SRAM, Integrated ±5ppm Temperature Compensation and Auto Daylight Saving |
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