19 FN7576.3 June 7, 2012 The ISL12022MR5421 has a preset Initial Analog Trimming value corresponding to the crystal in the modul" />
參數(shù)資料
型號(hào)： ISL12022MIBZ-TR5421
廠商： Intersil
文件頁(yè)數(shù)： 11/31頁(yè)
文件大小： 0K
描述： IC RTC/CALENDAR TEMP SNSR 20SOIC
應(yīng)用說明： Addressing Power Issues in Real Time Clock Appls
產(chǎn)品培訓(xùn)模塊： Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝： 1,000
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，夏令時(shí)，閏年，SRAM
存儲(chǔ)容量： 128B
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： I²C，2 線串口
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
安裝類型： 表面貼裝
封裝/外殼： 20-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 20-SOIC
包裝： 帶卷 (TR)
ISL12022MR5421
19
FN7576.3
June 7, 2012
The ISL12022MR5421 has a preset Initial Analog Trimming value
corresponding to the crystal in the module. This value is recalled on
initial power-up, is preset in device production and is READ-ONLY. It
cannot be overwritten by the user.
ALPHA Register (ALPHA)
The ALPHA variable is 8 bits and is defined as the temperature
coefficient of crystal from -40°C to T0, or the ALPHA Cold (there is
an Alpha Hot register that must be programmed as well). It is
normally given in units of ppm/°C2, with a typical value of -0.034.
The ISL12022MR5421 device uses a scaled version of the
absolute value of this coefficient in order to get an integer value.
Therefore, ALPHA <7:0> is defined as the (|Actual ALPHA Value| x
2048) and converted to binary. For example, a crystal with Alpha
of -0.034ppm/°C2 is first scaled (|2048*(-0.034)| = 70d) and
then converted to a binary number of 01000110b.
The practical range of Actual ALPHA values is from -0.020 to -0.060.
The ISL12022MR5421 has a preset ALPHA value corresponding
to the crystal in the module. This value is recalled on initial power-
up and is preset in device production. It is READ ONLY and cannot
be overwritten by the user.
BETA Register (BETA)
The BETA register has special Write properties. Only the TSE,
BTSE and BTSR bits can be written; the BETA bits are READ-ONLY.
TABLE 12. INITIAL AT AND DT SETTING REGISTER
ADDR
7
6
5
4
3
2
1
0
0Bh
IDTR01 IDTR00 IATR0
5
IATR0
4
IATR03 IATR0
2
IATR0
1
IATR0
0
TABLE 13. IATRO TRIMMING RANGE
IATR05
IATR04
IATR03
IATR02
IATR01
IATR00
TRIMMING
RANGE
0000
00
+32
0000
01
+31
0000
10
+30
0000
11
+29
0001
00
+28
0001
01
+27
0001
10
+26
0001
11
+25
0010
00
+24
0010
01
+23
0010
10
+22
0010
11
+21
0011
00
+20
0011
01
+19
0011
10
+18
0011
11
+17
0100
00
+16
0100
01
+15
0100
10
+14
0100
11
+13
0101
00
+12
0101
01
+11
0101
10
+10
0101
11
+9
0110
00
+8
0110
01
+7
0110
10
+6
0110
11
+5
0111
00
+4
0111
01
+3
0111
10
+2
0111
11
+1
1000
00
0
1000
01
-1
1000
10
-2
1000
11
-3
1001
00
-4
1001
01
-5
1001
10
-6
1001
11
-7
1010
00
-8
1010
01
-9
1010
10
-10
101
011
-11
101
100
-12
101
-13
101
110
-14
101
111
-15
110
000
-16
110
001
-17
110
010
-18
110
011
-19
110
100
-20
110
101
-21
110
-22
110
111
-23
111
000
-24
111
001
-25
111
010
-26
111
011
-27
111
100
-28
111
101
-29
111
110
-30
111
-31
TABLE 14. ALPHA REGISTER
ADDR
7
6543210
0Ch
D
ALPHA
6
ALPHA
ALPHA
4
ALPHA
3
ALPHA
2
ALPHA
1
ALPHA
0
TABLE 15. BETA REGISTER
ADDR
7
6
5
4
321
0
0Dh
TSE BTSE BTSR BETA4 BETA3 BETA2 BETA1 BETA0
TABLE 13. IATRO TRIMMING RANGE (Continued)
IATR05
IATR04
IATR03
IATR02
IATR01
IATR00
TRIMMING
RANGE
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ISL12022MR5421 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Power RTC with Battery Backed SRAM, Integrated 5ppm
ISL12022M-R5421 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:High-Accuracy RTC Modules, Feature-Rich RTCs
ISL12023 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Power RTC with Battery-Backed SRAM and Embedded Temp Compensation ±5ppm with Auto Daylight Saving
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ISL12023IVZ-T 功能描述:實(shí)時(shí)時(shí)鐘 REAL TIME CLK/CLNDR W/TEMP COM 14 L RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口: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
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