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參數(shù)資料
| 型號： | SA9110A |
| 廠商： | SAMES |
| 元件分類： | 電能質(zhì)量分析儀 |
| 英文描述： | MONOCHIP THREE PHASE BIDIRECTIONAL |
| 中文描述： | MONOCHIP三相雙向 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大?。?/td> | 183K |
| 代理商： | SA9110A |
SA9110A
12/18
sames
The 4 tariff registers as well as the total register may be sequentially displayed by
activating the Push Button (PB). The minimum Push Button make time is 5mS. The
contents of the register selected for display is retained on the display for a period
of 10 seconds, provided that the push button is not activated during this period. After
the 10 seconds has elapsed, the display defaults to the "active" register defined by
the status of the SR[0] and SR[1] inputs.
The register selected for display via the push button (PB) is indicated by the relevant
announciator.
Memory Reset
In programming mode (while PGM is pulled low) if PCLK is left floating and PDTA=0,
the internal clock of the SA9110A will ensure that default values are set. For default
conditions all of the RAM locations are set to 0 and the value of the slope is set to
11389.
The minimum time period for a complete reset cycle is determined by:
t
min
FOSC
= 322 * 64
Where FOSC = Oscillator frequency (2MHz.....4MHz)
If the recommended crystal frequency of 3.5795MHz is used, this will result in a
minimum reset time of 5.8ms.
The specified signal levels on pins PGM, PCLK and PDTA must remain stable for
the entire reset cycle period.
5.
Tariff Registers
A multiple tariff facility is provided on-chip by means of 4 tariff registers, which are
externally selectable via the SR[0] and SR[1] inputs. The registers may be selected
by programming the SR[0] and SR[1] inputs as follows:
SR[1]
0
0
1
1
SR[0]
0
1
0
1
Register
Register 1
Register 2
Register 3
Register 4
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