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UPD75304BGC Datasheet(PDF) 10 Page - NEC |
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UPD75304BGC Datasheet(HTML) 10 Page - NEC |
10 / 76 page 10 µPD75304B,75306B,75308B 3.1 PORT PINS (2/2) Dual- Function Pin KR0 KR1 KR2 KR3 KR4 KR5 KR6 KR7 S24 S25 S26 S27 S28 S29 S30 S31 *1. : Schmitt trigger input 2. BP0 to BP7 select VLC1 as the input source. However, the output level depends on BP0 to BP7 and VLC1 external circuit. Example BP0 to BP7 are connected mutually within the µPD75308B. Therefore, the output level of BP0 to BP7 is determined by the value of R1, R2 and R3. µPD75308B ON ON VLC1 R1 R3 BP0 BP1 R2 VDD Pin Name P60 P61 P62 P63 P70 P71 P72 P73 BP0 BP1 BP2 BP3 BP4 BP5 BP6 BP7 Input/Output Input/output Input/output Output Output Function Programmable 4-bit input/output port (PORT 6) Input/output can be specified bit-wise. On-chip pull-up resistor can be specified as a 4-bit unit by software. 4-bit input/output port (PORT 7) On-chip pull-up resistor can be specified as a 4-bit unit by software. 1-bit output port (BIT PORT) Also used as segment output pin. 8-bit I/O × Input Input * 2 I/O Circuit Type *1 F - A F - A G - C After Reset |
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Similar Description - UPD75304BGC |
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