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參數(shù)資料
| 型號： | SM8580 |
| 廠商： | Seiko NPC Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| 中文描述： | 實時時鐘集成電路溫度傳感器與4位接口和內(nèi)置 |
| 文件頁數(shù)： | 19/23頁 |
| 文件大小： | 179K |
| 代理商： | SM8580 |
SM8580AM
NIPPON PRECISION CIRCUITS—19
Digital Correction Registers (Bank 2, Registers 0, 1)
I
These registers enable and set the level of digital
correction applied to oscillator clock. DT_ON
enables the correction function, and bits DT0 to
DT6 set the level of correction to be applied. This
function adjusts the number of 1 second cycles
which occur every 10 seconds.
I
When digital correction is not used, a 0 should be
written to DT_ON to disable correction.
I
Correction range and resolution (correction range
depends on the frequency)
I
DT bits and digital correction (correction value
depends on the frequency)
I
Correction value calculation
Positive correction (leading time)
[DT6:0] = correction ÷ 3.05 (with decimal
round-off)
Example: for correction of 192.15ppm
[DT6:0] = 192.15 ÷ 3.05 = 63
10
= 0111111
2
Negative correction (lagging time)
[DT6:0] = 128 + correction ÷ 3.05 (with deci-
mal round-off)
Example: for correction of
158.6ppm
[DT6:0] = 128 + (
158.6 ÷ 3.05) = 76
10
=
1001100
2
Bank
Address
Register
Bit 3
Bit 2
Bit 1
Bit 0
2
0
Digital correction registers
DT3
DT2
DT1
DT0
1
DT_ON
DT6
DT5
DT4
Correction range
Correction resolution
Correction cycle
195.20 to +192.15ppm
3.05ppm
10 seconds
Digital correction bits
Correction
(ppm)
DT6
DT5
DT4
DT3
DT2
DT1
DT0
0
1
1
1
1
1
1
+192.15
0
1
1
1
1
1
0
+189.10
↓
↓
0
0
0
0
0
1
0
+6.10
0
0
0
0
0
0
1
+3.05
0
0
0
0
0
0
0
±0.00
1
1
1
1
1
1
1
3.05
1
1
1
1
1
1
0
6.10
↓
↓
1
0
0
0
0
0
1
192.15
1
0
0
0
0
0
0
195.20
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SM8580AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
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