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MC68340 データシート(PDF) 48 Page - Freescale Semiconductor, Inc |
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MC68340 データシート(HTML) 48 Page - Freescale Semiconductor, Inc |
48 / 441 page 2- 14 MC68340 USER’S MANUAL MOTOROLA Table 2-5. Signal Summary Signal Name Mnemonic Input/Output Active State Three-State Address Bus A23–A0 Out — Yes Address Bus Port A7–A0/ Interrupt Acknowledge A31–A24 Out/I/O/Out —/—/Low Yes Data Bus D15–D0 I/O — Yes Function Codes FC3–FC0 Out — Yes Chip Select 3/Interrupt Request Level/Port B4, B2, B1 CS3–CS1 Out/In/I/O Low/Low/— No Chip Select 0/Autovector CS0 Out/In Low/Low No Bus Request BR In Low — Bus Grant BG Out Low No Bus Grant Acknowledge BGACK In Low — Data and Size Acknowledge DSACK1, DSACK0 In Low — Read-Modify-Write Cycle RMC Out Low Yes Address Strobe AS Out Low Yes Data Strobe DS Out Low Yes Size SIZ1, SIZ0 Out — Yes Read/Write R/ W Out High/Low Yes Interrupt Request Level/ Port B7, B6, B5, B3 IRQ7, IRQ6, IRQ5, IRQ3 In/I/O Low/— — Reset RESET I/O Low No Halt HALT I/O Low No Bus Error BERR In Low — System Clock CLKOUT Out — No Crystal Oscillator EXTAL, XTAL In, Out — — External Filter Capacitor XFC In — — Clock Mode Select/Port B0 MODCK In/I/O —/— — Instruction Fetch/ Development Serial In IFETCH/DSI Out/In Low/— No/— Instruction Pipe/ Development Serial Out IPIPE/DSO Out/Out Low/— No/— Breakpoint/ Development Serial Clock BKPT/DSCLK In/In Low/— —/— Freeze FREEZE Out High No Receive Data RxDA, RxDB In — — Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
同様の部品番号 - MC68340 |
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同様の説明 - MC68340 |
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