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38K2 Datasheet(PDF) 3 Page - Renesas Technology Corp |
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38K2 Datasheet(HTML) 3 Page - Renesas Technology Corp |
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3 / 151 page  38K2 Group Rev.3.00 Oct 15, 2006 page 3 of 147 REJ03B0193-0300 PIN DESCRIPTION Table 1. Pin description Function • Apply voltage of 3.0 V – 5.25 V (L version) to VCC, and 0 V to VSS. • Power source pin for ports P1, P3, P4 and analog circuit. Connect this pin to VCC. • This pin controls the operation mode of the chip. Connect this pin to VSS. In the flash memory mode, this pin becoems VPP power source input pin. • This pin controls the operation mode of the chip. Connect this pin to VSS. • Reference voltage input pin for A/D converter. • Power source pin for analog circuit. • Connect the DVCC and PVCC pins to VCC, and the PVSS pin to VSS. • Reset input pin for active “L” • Input and output pins for the main clock generating circuit. • Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. •If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. • Power source pin for USB port circuit. In Vcc = 4.00 to 5.25 V use the built-in USB reference voltage circuit. In Vcc = 3.60 to 4.00 V apply 3.3 V power supply from the external because use of the built-in USB reference voltage circuit is prohibited in this voltage range. In Vcc = 3.00 to 3.60 V connect this pin to VCC because use of the built-in USB reference voltage circuit is prohibited in this voltage range. • Output pin to pull-up D0+ by 1.5 k Ω external resistor. • USB upstream I/O port • USB input level • USB output level output structure • USB downstream I/O port • USB input level • USB output level output structure • 8-bit I/O port • I/O direction register allows each pin to be individually programmed as either input or output. • CMOS compatible input level • CMOS 3-state output structure • Pull-up control is enabled. • 8-bit I/O port • I/O direction register allows each pin to be individually programmed as either input or output. • CMOS compatible input level • CMOS 3-state output structure • 4-bit I/O port • I/O direction register allows each pin to be individually programmed as either input or output. • CMOS compatible input level • CMOS 3-state output structure • 8-bit I/O port • I/O direction register allows each pin to be individually programmed as either input or output. • CMOS compatible input level • CMOS 3-state output structure • 4-bit I/O port • I/O direction register allows each pin to be individually programmed as either input or output. • CMOS compatible input level • CMOS 3-state output structure • 8-bit I/O port • I/O direction register allows each pin to be individually programmed as either input or output. • CMOS compatible input level • CMOS 3-state output structure • 4-bit I/O port; • I/O direction register allows each pin to be individually programmed as either input or output.; • CMOS compatible input level• CMOS 3-state output structure; • Output large current for LED drive is enabled. • Key input pins (key-on wake up interrupt) • A/D converter input pins • External bus interface function pins • External bus interface function pins • Serial I/O function pins • External bus interface function pins • Interrupt input pin • Timer X funciton pin • Interrupt input pin Pin VCC, VSS VCCE CNVSS CNVSS2 VREF DVCC PVCC, PVSS RESET XIN XOUT USBVREF TrON D0+, D0- D1+, D1-, D2+, D2- P00–P07 P10/DQ0/AN0– P17/DQ7/AN7 P24–P27 P30–P32 P33/ExINT P34/ExCS P35/ExWR P36/ExRD P37/ExA0 P40/ExDREQ/RxD P41/ExDACK/TxD P42/ExTC/SCLK P43/ExA1/SRDY P50/INT0 P51/CNTR0 P52/INT1 P53–P57 P60–P63 Name Power source Analog power source CNVSS CNVSS2 Analog reference voltage input Analog power source Reset input Clock input Clock output USB reference power source USB reference voltage output USB upstream I/O USB down- stream I/O I/O port P0 I/O port P1 I/O port P2 I/O port P3 I/O port P4 I/O port P5 I/O port P6 Function except a port function |
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