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HT48R52A Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT48R52A Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
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3 / 35 page  Pin Assignment Pin Description Pin Name I/O Options Description PA0~PA7 I/O Pull-high Wake-up Bidirectional 8-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt trigger input. A pull-high resistor can be con- nected via configuration option. Each pin can be setup to be a wake-up input via configuration options. PB0~PB2, PB3/TMR PB4~PB7 I/O ¾ Bidirectional 8-bit input/output port. The timer input is pin-shared with PB3. PC0~PC7 O ¾ PC0~PC7 are PMOS output pins. PD0/INT I/O ¾ External interrupt input. Pin-shared with PD0 and activated on a high to low or low to high transition. PD0 is NMOS type output pin. PD1~PD7 O ¾ PD1~PD7 are NMOS output pins. PE0~PE7 O ¾ PE0~PE7 are NMOS output pins. RES I ¾ Schmitt trigger reset input. Active low. OSC1 I ¾ OSC1 is connected to a external resistor for the internal system clock. OSC3 OSC4 I O ¾ Real time clock oscillator. OSC3 and OSC4 are connected to a 32768Hz crys- tal oscillator for system clock timing purposes. TEST I ¾ TEST pin is internally pulled-high and can be left floating. For test only. VDD ¾¾ Positive power supply VDDB ¾¾ PB port positive power supply VDDC ¾¾ PC port positive power supply VSS ¾¾ Negative Power supply, ground VSSD, VSSE ¾¾ PD & PE port negative power supply, ground HT48R52A Rev. 1.60 3 April 28, 2010 P A 7 P E 0 P E 1 P E 2 V S S E P E 3 P E 4 P E 5 P E 6 P E 7 P D 0 / I N T P D 1 P D 2 V S S P B 7 P B 6 P B 5 P B 4 V D D B V D D B P B 3 / T M R P B 2 P B 1 P B 0 P C 7 P C 6 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 3 4 3 5 3 6 3 7 3 8 3 9 4 8 4 9 5 0 5 1 5 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 H T 4 8 R 5 2 A 5 2 Q F P - A 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 P A 5 P A 6 P A 7 P E 0 P E 1 P E 2 V S S E P E 3 P E 4 P E 5 P E 6 V S S P B 7 P B 6 P B 5 P B 4 V D D B V D D B P B 3 / T M R P B 2 P B 1 P B 0 H T 4 8 R 5 2 A 4 4 Q F P - A / L Q F P - A 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0 4 1 4 2 4 3 4 4 |
Similar Part No. - HT48R52A_10 |
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