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SG44 More Information


Operating voltage : 2.4V~5.2V Built-in 256kHz RC oscillator External 32.768kHz crystal or 256kHz frequency source input Selection of 1/2 or 1/3 bias, and selection of 1/2 or 1/3 or 1/4 duty LCD applications Internal time base frequency sources Two selectable buzzer frequencies (2kHz/4kHz) Power down command reduces power consumption Built-in time base generator and WDT Time base or WDT overflow output
 SG44 PDF Download


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transmission line with other RS-232 devices which are not powered by the same power supplies, it is possible that a device that is not powered will have a low impedance path to ground at its driver output. The RS-232 stan- dards require that with no power applied to the device, the impedance from a transmitter output to ground must be greater than 300Ω. This can be easily achieved as shown in Figure 1a, where an external transistor is used as a switch to isolate an SP304 from ground in the power off condition. With VDD turned on, the transistor switch is on, connecting ground (GND) for the device to the circuit ground. In a power-off condition, this transistor is switched off, thus isolating the unit from circuit ground, and thereby leaving the driver in a high impedance state. Multiple SP304s can be connected as shown in Figure 1b.


Device Address Pins (A0, A1, A2, A3) There is no active chip select on the SG44 and SG44. Instead, four static device address pins (A0, A1, A2, and A3) are provided for decoding from one to 16 possible devices (Figure 2). This allows up to 4MB (using an SG44 device) or 32MB (using an SG44 device) to be addressed via a single 2-wire NXS interface. The static address pins (A0-A3) must be tied high or low to match the device address field (DA3-DA0) in the sector Read and Erase/Write instruction sequences.

Related Models

Parr number/PDF Mfg Pack D/C Descrpion Parr number/PDF Mfg Pack D/C Descrpion
 SG42213P DC input, controls CDMA ampl  SG4468 Digital Ground. All digital
 SG42213P DC input, controls CDMA ampl  SG405 KODENSHI 04+  C Programmable external
 SG42  SG444DY All parameters having min/ma

SG44 Suppliers

Part Number Mfg Pack D/C Qty Description Inquiry
SG400EX11 400A/2500V/GTO 31
SG400EX22 400A/2200V/GTO 32
SG400R11 400A/1300V/GTO 33
SG400R22 400A/1300V/GTO 34
SG400U11 400A/1600V/GTO 35
SG400U22 400A/1600V/GTO 36
SG400W11 400A/1800V/GTO 37
SG400W22 400A/1800V/GTO 38
SG400Z1H 60 400A/1200V/IGBT/1U
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