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SAA5497PS Datasheet(PDF) 5 Page - NXP Semiconductors |
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SAA5497PS Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 33 page February 1995 5 Philips Semiconductors Preliminary specification One page Economy Teletext/TV microcontroller SAA5290 VSYNC 37 Vertical sync dedicated input for a TTL-level version of the vertical sync pulse. The polarity of this pulse is programmable by register bit TXT1.V POLARITY. VDDA 38 +5 V analog power supply. VDDT 39 +5 V teletext power supply. OSCGND 40 Crystal oscillator ground. OSCIN 41 12 MHz crystal oscillator input. OSCOUT 42 12 MHz crystal oscillator output. RESET 43 If the reset input is HIGH for 2 machine cycles (24 oscillator periods) while the oscillator is running, the SAA5290 is reset. This pin should be connected to VDDM via a 2.2 µF capacitor. VDDM 44 +5 V microcontroller power supply. P1.0/INT1 45 PORT 1: 8-bit open-drain bidirectional port with alternative functions. P1.0/INT1 is external interrupt 1 which can be triggered on the rising and falling edge of the pulse. P1.1/T0 is the counter/timer 0. P1.2/INT0 is external interrupt 0. P1.3/T1 is the counter/timer 1. P1.6/SCL is the serial clock input for I2C-bus. P1.7/SDA is the serial data port for the I2C-bus. P1.1/T0 46 P1.2/INT0 47 P1.3/T1 48 P1.6/SCL 49 P1.7/SDA 50 P1.4 51 P1.5 52 SYMBOL PIN DESCRIPTION |
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