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PIC16F628-20/SS 데이터시트(PDF) 39 Page - Microchip Technology |
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PIC16F628-20/SS 데이터시트(HTML) 39 Page - Microchip Technology |
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39 / 160 page ![]() © 1999 Microchip Technology Inc. Preliminary DS40300B-page 39 PIC16F62X FIGURE 5-12: BLOCK DIAGRAM OF RB4/PGM PIN Data Latch TRIS Latch RD TRISB P VSS Q D Q CK Q D Q CK N VDD RD PORTB WR PORTB WR TRISB Schmitt Trigger PGM input LVP Data Bus RB4/PGM RBPU VDD weak pull-up P From other QD EN QD EN Set RBIF RB<7:4> pins RD Port Q3 Q1 TTL input buffer VDD VSS Note: The low voltage programming disables the interrupt on change and the weak pullups on RB4. |
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