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PCA84C922C Datasheet(PDF) 9 Page - NXP Semiconductors |
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PCA84C922C Datasheet(HTML) 9 Page - NXP Semiconductors |
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9 / 36 page  1997 Oct 22 9 Philips Semiconductors Product specification Microcontrollers for universal infrared remote transmitter applications PCA84C922; PCA84C923 Table 3 PCA84C922C (SO28) and PCA84C923C (SO28) Table 4 PCA84C922A (SO24/SDIP24) and PCA84C923A (SO24/SDIP24) SYMBOL PIN DESCRIPTION P00 to P07 4, 3, 26, 25, 11, 12, 17, 18 Standard I/O port lines, generally used for keypad scanning or for LSB address byte of code data. P10 to P17 22, 21, 20, 19, 2, 27, 13, 16 Standard I/O port lines, generally used for keypad sensing, the wake-up function of P14 to P17 can be removed by mask option. P20 to P23 14, 15, 1, 28 Standard I/O port lines with 10 mA sink capability. T0/INT 5 Test pin T0 or external interrupt input. T1 6 Test pin T1 or timer/counter input (T1). RESET 7 Active HIGH reset pin; normally connected to VSS as Power-on-reset serves the same function. XTAL2 9 Crystal or ceramic resonator or LC oscillator connections. XTAL1 10 LOUT 24 Pulse train output pin, capable of sinking 30 mA. VDD 8 Power supply. VSS 23 Ground. SYMBOL PIN DESCRIPTION P00 to P07 3, 2, 23, 22, 10, 11, 14, 15 Standard I/O port lines, generally used for keypad scanning or for LSB address byte of code data. P10 to P17 19,18, 17, 16, 1, 24,12,13 Standard I/O port lines, generally used for keypad sensing, the wake-up function of P14 to P17 can be removed by mask option. T0/INT 4 Test pin T0 or external interrupt input. T1 5 Test pin T1 or timer/counter input (T1). RESET 6 Active HIGH reset pin; normally connected to VSS as Power-on-reset serves the same function. XTAL2 8 Crystal or ceramic resonator or LC oscillator connections. XTAL1 9 LOUT 21 Pulse train output pin, capable of sinking 30 mA. VDD 7 Power supply. VSS 20 Ground. |
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