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4250 データシート(PDF) 7 Page - Renesas Technology Corp |
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4250 データシート(HTML) 7 Page - Renesas Technology Corp |
7 / 59 page 6 MITSUBISHI MICROCOMPUTERS 4250 Group SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PORT FUNCTION Control bits 1 4 4 2 Control instructions SD RD SZD CLD SCP RCP SNZCP OKA IAK OSA IAS LGOP OGA IAG OFA IAF Control registers PU0 K0 LO PU0, K0 PU0, K0 V1 PU0, K0 Output structure N-channel open-drain N-channel open-drain N-channel open-drain N-channel open-drain Input/ Output I/O (4) I/O (4) I/O (4) I/O (2) Remark Pull-up function (programmable) Logic operation function (programmable) Key-on wakeup functions (programmable) Pull-up functions Key-on wakeup functions (only pull-up function is programmable) Pull-up functions (programmable) Key-on wakeup functions (programmable) Pin D0, D1 D2/C D3/K S0–S3 G0/INT G1/TOUT G2, G3 F0, F1 Port Port D Port S Port G Port F DEFINITION OF CLOCK AND CYCLE • System clock This is the source clock input to the XIN pin. Connect pins XIN and XOUT directly. Then, pull up XIN pin through a resistor and pull down XOUT pin through a capacitor. • Instruction clock The instruction clock is a signal derived by dividing the system clock by 4, and is the basic clock for controlling this product. • Machine cycle One machine cycle is the time required to execute the minimum instruction (one-cycle instruction). The machine cycle is equivalent to the instruction clock cycle. |
同様の部品番号 - 4250 |
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同様の説明 - 4250 |
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