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RX230 数据表(PDF) 13 Page - Renesas Technology Corp |
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RX230 数据表(HTML) 13 Page - Renesas Technology Corp |
13 / 177 page R01DS0261EJ0110 Rev.1.10 Page 13 of 177 Oct 30, 2015 RX230 Group, RX231 Group 1. Overview 1.4 Pin Functions Table 1.5 lists the pin functions. Table 1.5 Pin Functions (1/4) Classifications Pin Name I/O Description Power supply VCC Input Power supply pin. Connect it to the system power supply. VCL — Connect this pin to the VSS pin via the 4.7 μF smoothing capacitor used to stabilize the internal power supply. Place the capacitor close to the pin. VSS Input Ground pin. Connect it to the system power supply (0 V). VBATT Input Backup power pin Clock XTAL Output Pins for connecting a crystal. An external clock can be input through the EXTAL pin. EXTAL Input BCLK Output Outputs the external bus clock for external devices. XCIN Input Input/output pins for the sub-clock oscillator. Connect a crystal between XCIN and XCOUT. XCOUT Output CLKOUT Output Clock output pin. Operating mode control MD Input Pin for setting the operating mode. The signal levels on this pin must not be changed during operation. UB Input Pin used for boot mode (USB interface). UPSEL Input Pin used for boot mode (USB interface). System control RES# Input Reset pin. This MCU enters the reset state when this signal goes low. CAC CACREF Input Input pin for the clock frequency accuracy measurement circuit. On-chip emulator FINED I/O FINE interface pin. Address bus A0 to A23 Output Output pins for the address. Data bus D0 to D15 I/O Input and output pins for the bidirectional data bus. Multiplexed bus A0/D0 to A15/D15 I/O Address/data multiplexed bus Bus control RD# Output Strobe signal which indicates that reading from the external bus interface space is in progress. WR# Output Strobe signal which indicates that writing to the external bus interface space is in progress, in single-write strobe mode. WR0#, WR1# Output Strobe signals which indicate that either group of data bus pins (D7 to D0, and D15 to D8) is valid in writing to the external bus interface space, in byte strobe mode. BC0#, BC1# Output Strobe signals which indicate that either group of data bus pins (D7 to D0 and D15 to D8) is valid in access to the external bus interface space, in single-write strobe mode. CS0# to CS3# Output Select signals for areas 0 to 3. WAIT# Input Input pin for wait request signals in access to the external space. ALE Output Address latch signal when address/data multiplexed bus is selected. LVD CMPA2 Input Detection target voltage pin for voltage detection 2. Interrupts NMI Input Non-maskable interrupt request pin. IRQ0 to IRQ7 Input Interrupt request pins. |
类似零件编号 - RX230 |
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类似说明 - RX230 |
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