参数资料
| 型号： | ISL12026IBZ-T7A |
| 厂商： | Intersil |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC RTC/CALENDAR EEPROM 8SOIC |
| 标准包装： | 250 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年 |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
19
FN8231.9
November 30, 2010
Sequential Read
Sequential reads can be initiated as either a current address
read or random address read. The first data byte is
transmitted as with the other modes; however, the master
now responds with an acknowledge, indicating it requires
additional data. The device continues to output data for each
acknowledge received. The master terminates the read
operation by not responding with an acknowledge and then
issuing a stop condition.
The data output is sequential, with the data from address n
followed by the data from address n + 1. The address
counter for read operations increments through all page and
column addresses, allowing the entire memory contents to
be serially read during one operation. At the end of the
address space, the counter “rolls over” to the start of the
address space, and the ISL12026 continues to output data
for each acknowledge received. Refer to Figure 22 for the
acknowledge and data transfer sequence.
Application Section
Crystal Oscillator and Temperature Compensation
Intersil has now integrated the oscillator compensation
circuity on-chip, to eliminate the need for external
components and adjust for crystal drift over temperature and
enable very high accuracy time keeping (<5ppm drift).
The Intersil RTC family uses an oscillator circuit with on-chip
crystal compensation network, including adjustable
load-capacitance. The only external component required is
the crystal. The compensation network is optimized for
operation with certain crystal parameters which are common
in many of the surface mount or tuning-fork crystals available
today. Table 7 summarizes these parameters.
Table 8 contains some crystal manufacturers and part numbers
that meet the requirements for the Intersil RTC products.
0
SLAVE
ADDRESS
WORD
ADDRESS 1
A
C
K
A
C
K
S
T
A
R
T
S
T
O
P
SLAVE
ADDRESS
DATA
A
C
K
1
S
T
A
R
T
SDA BUS
SIGNALS FROM
THE SLAVE
SIGNALS FROM
THE MASTER
A
C
K
WORD
ADDRESS 0
1
11
00 0 0 0 0 0
FIGURE 21. RANDOM ADDRESS READ SEQUENCE
DATA
(2)
S
T
O
P
SLAVE
ADDRESS
DATA
(n)
A
C
K
A
C
K
SDA BUS
SIGNALS FROM
THE SLAVE
SIGNALS FROM
THE MASTER
1
DATA
(n-1)
A
C
K
A
C
K
(n is any integer greater than 1)
DATA
(1)
FIGURE 22. SEQUENTIAL READ SEQUENCE
TABLE 7. CRYSTAL PARAMETERS REQUIRED FOR INTERSIL
RTCs
PARAMETER
MIN
TYP
MAX
UNITS
NOTES
Frequency
32.768
kHz
Frequency
Tolerance
±100
ppm
Down to 20ppm
if desired
Turnover
Temperature
20
25
30
°C
Typically the value
used for most
crystals
Operating Temp
Range
-40
85
°C
Parallel Load
Capacitance
12.5
pF
Equivalent
Series
Resistance
50
k
Ω
For best oscillator
performance
ISL12026, ISL12026A
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| ISL12026IVZ | 功能描述:实时时钟 REAL TIME CLK/CLNDR W/EEPROM IN 8LD RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| ISL12026IVZ-T | 功能描述:实时时钟 REAL TIME CLK/CLNDR W/EEPROM IN 8LD RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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| ISL12027_10 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Real Time Clock/Calendar with EEPROM |
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