TMP47C237AN

      TMP47C237AN is based on the TLCS-47 CMOS series. The 47C237AN has display on-screen circuit(OSD) to display bar which indicate channel or volume on TV screen , A/D converter input , D/A converter output which is suitable for application to the digital turning shuch as TV. It has lots of unique features which is as follows : 4-bit single chip microcomputer; Instruction excecution time which is 19s ( at 4.2MHz); 89 basic instruction; Table look-up instructions; Subroutine nesting which is 15 levels max; Internal timer; 3-bit A/D converter input(auto frequency control signal (s-shaped curve) detection); Pulse width modulation outputs : 14-bitresolution 1 channel and 6-bits resolution 1 channel; High current outputs (LED direct drive capability(typ. 10 mA * 4bit); Hold function: Battery or capacitor back-up.
     There are some TMP47C237AN electrical characteristics . Absolute maximum ratings when the Vss is 0 V : Supply voltage (VDD) is -0.3 V to 7 V; Input voltage(V_in) is -0.3 V to VDD+0.3 V. Output voltage(V_OUT1) is  -0.3 V to VDD+0.3 V except  sink open drain pin , but include R5. Output voltage(_VOUT2) is -0.3 V to 10 V(sink open drain pin, except R5 port). Output current(per 1 pin )(I_OUT1) is 10 mA (port R6). Output current(per 1 pin )(IOUT2) is 3.2 mA (port R4, R6,R7 ,R8). Output voltage (total) is 40 mA (Port R6). Power disspation(Topr is 70) (PD) is 600 mW. Soldering temperature(Time) (Tstd) is 260 (10 sec). Storage temperature(Tstg) is -55 to 125 . Operating temeprature (Topr) is -20 to 70 . Recommended operating condtions(Vss is 0 V , Topr is -20 to 70 ): Supply voltage is 4.5 V min and 6.0 Vmax in the normal mode while 2.0 V min and 6.0 V max in the hold mode. Clock frenquency (fc) is 0.4 NHz min and 4.2 MHZ max ( XIN, XOUT). Clock frenquency(fosc) is 2 MHz min and 6 MHz max (OSC1, OSC2).
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