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參數資料
| 型號： | Q62705-K194 |
| 廠商： | SIEMENS AG |
| 英文描述： | Silicon Piezoresistive Absolute Pressure Sensor |
| 中文描述： | 硅壓阻式絕對壓力傳感器 |
| 文件頁數： | 5/12頁 |
| 文件大小： | 71K |
| 代理商： | Q62705-K194 |
KP110
Data Book
5
2003-05
The table below shows the internal registers of the KP110. For the shaded registers
PROM cells exist. The PROM cells are used for permanent programming of the
calibration data.
In addition to the registers in the table below a 12 x 9 bit RAM table exists for the
linearization and definition of the analog pressure signal. This RAM table is also
overlayed by PROM cells.
To write a 9 bit word to the RAM table at first the data content must be written into the
MEMDAT register. In a further write cycle the desired word is addressed by the 4 LSBs
of the MEMCTL register.
Nonvolatile Memory
Each PROM cell consists of a thin polysilicon wire located in a small evacuated cavity.
The cells are called HR-fuses. In order to write a logic "1" to a HR-cell the wire has to be
cut with a current pulse. Since the current can reach up to 100 mA only a single HR-fuse
can be programmed at a time.
The desired bit within a HR-fuse register is addressed by a register called FUSE_NR. In
case of the linearization table the desired PROM register itself is addressed by the
MEMCTL-register. In order to program the GLOBOFF, TGAIN, TOFFL and TOFFQ
register the MODREG-register is used for addressing.
After the correct addressing of PROM register and bit a fuse pulse has to be applied to
pad 1. The requirements for the pulse voltage, length and slew rate are given in the
electrical characteristics.
The exact sequences for RAM/PROM reading/writing are available on request.
Register
MEMDAT
MEMCTL
GLOBOFF
FUSE_NR
TESTREG
TGAIN
TOFFL
TOFFQ
MODEREG
Function
Data bit 0 to 9
Selection of register of linearization table
Global offset compensation
Fuse number
Selection of register for read cycle
Temperature gain compensation (linear and square)
Linear temperature offset compensation
Square temperature offset compensation
Selection of registers for programming of PROM
The shaded registers in the table are overlayed with PROM
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