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EM78P447SA Datasheet(PDF) 6 Page - ELAN Microelectronics Corp |
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EM78P447SA Datasheet(HTML) 6 Page - ELAN Microelectronics Corp |
6 / 55 page EM78P447S OTP ROM 3. PIN ASSIGNMENT TCC VDD NC Vss /INT P50 P51 P53 P60 P61 P62 P63 P64 P52 /RESET OSCI OSCO P77 P76 P75 P74 P72 P71 P70 P67 P66 P65 P73 1 2 3 4 5 6 7 8 9 10 11 12 14 13 26 25 24 23 22 21 20 19 18 17 29 30 27 28 P55 P54 P56 P57 15 16 31 32 TCC VDD NC Vss /INT P50 P51 P53 P60 P61 P62 P63 P64 P52 /RESET OSCI OSCO P77 P76 P75 P74 P72 P71 P70 P67 P66 P65 P73 1 2 3 4 5 6 7 8 9 10 11 12 14 13 26 25 24 23 22 21 20 19 18 17 16 15 27 28 TCC VDD Vss /INT P50 P51 P53 P60 P61 P62 P63 P64 P52 /RESET OSCI OSCO P77 P76 P75 P74 P72 P71 P70 P67 P66 P65 P73 1 2 3 4 5 6 7 8 9 10 11 12 14 13 26 25 24 23 22 21 20 19 18 17 16 15 27 28 Vss Fig. 1 Pin Assignment Table 1 EM78P447SAP and EM78P447SAM Pin Description Symbol Pin No. Type Function VDD 2 - * Power supply. OSCI 27 I * XTAL type: Crystal input terminal or external clock input pin. * RC type: RC oscillator input pin. OSCO 26 I/O * XTAL type: Output terminal for crystal oscillator or external clock input pin. * RC type: Instruction clock output. * External clock signal input. TCC 1 I * The real time clock/counter (with Schmitt trigger input pin) must be tied to VDD or VSS if not in use. /RESET 28 I * Input pin with Schmitt trigger. If this pin remains at logic low, the controller will also remain in reset condition. P50~P53 6~9 I/O * P50~P53 are bi-directional I/O pins. P60~P67 10~17 I/O * P60~P67 are bi-directional I/O pins. These can be pulled-high internally by software control. P70~P77 18~25 I/O * P70~P77 are bi-directional I/O pins. * P74~P75 can be pulled-high internally by software control. * P76~P77 can have open-drain output by software control. * P70 and P71 can also be defined as the R-option pins. /INT 5 I * External interrupt pin triggered by falling edge. VSS 4 - * Ground. NC 3 - * No connection. This specification is subject to change without prior notice. 06.25.2003 (V1.1) 6 |
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