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M32174F3VFP Datasheet(PDF) 10 Page - Mitsubishi Electric Semiconductor |
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M32174F3VFP Datasheet(HTML) 10 Page - Mitsubishi Electric Semiconductor |
10 / 49 page Mitsubishi Microcomputers 10 2001-5-14 Rev.1.0 SINGLE-CHIP 32-BIT CMOS MICROCOMPUTER 32170 Group, 32174 Group Table 5 Description of Pin Function (1/5 ) Type Pin Name Description Input/Output Function Power VCCE Power supply — Supplies power (5 V or 3.3V) to external I/O ports. supply VCCI Power supply — Supplies power (3.3 V) to the internal logic. VDD RAM power supply — nternal RAM backup power supply (3.3 V). FVCC Flash power supply — Internal flash memory backup power supply (3.3 V). VSS Ground — Connect all VSS pins to ground (GND). Clock XIN, Clock Input Clock input/output pins. These pins contain a PLL-based XOUT Output frequency multiply-by-4, so input the clock whose frequency is quarter the operating frequency. (XIN input = 10 MHz when CPU clock operates at 40 MHz) BCLK / System clock Output When this signal is System Clock(BCLK), it outputs a clock whose is twice that of ______ WR external inpout clock. (BCLK output = 20 MHz when CPU clock operates at 40 MHz). Use this clock when circuits are synchronized externally. ______ When this signal is Write(WR),during external write access it indicates the valid data on the data bus to transfer. OSC-VCC Power supply — Power supply to the PLL circuit. Connect OSC-VCC to the power supply(3.3V) OSC-VSS Ground — Connect OSC-VSS to ground. VCNT PLL control Input This pin controls the PLL circuit. Connect a resistor and capacitor to this pin. Reset ______ RESET Reset Input This pin resets the internal circuits. Mode MOD0 Mode Input These pins set an operation mode. MOD1 MOD0 MOD1 Mode 0 0 Single-chip mode 0 1 Expanded external mode 1 0 Processor mode 0 0 (Boot mode) (Note) 1 1 (Reserved) Address A11-A30 Address Output 20 lines of address bus (A11-A30) are provided to accommodate two bus bus channels of 2 MB memory space (max.) connected external to the chip. A31 is not output. In the write cycle, of the 16-bit data bus the valid byte positions to write are _________ ________ ________ _______ output as BHW/ BHE and BLW/ BLE. In read cycle, data on the entire 16-bit data bus is read. However, only the data at the valid byte positions are transferred to the M32R’s internal circuit. Data bus DB0-DB15 Data bus Input/output This 16-bit data bus connects to external device. Note: FP pin should be “H” level in Boot Mode. |
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