7534 datasheet(7/55 Pages) RENESAS

7 / 55 page

7534 Group

Rev.2.00

Jun 21, 2004

page 7 of 54

REJ03B0099-0200Z

PIN DESCRIPTION

Table 1 Pin description

Vcc, Vss

VREF

USBVREFOUT

CNVss

RESET

P00–P07

P10/RxD/D-

P11/TxD/D+

P12/SCLK

P13/SDATA

P14/CNTR0

P15, P16

P20/AN0–

P27/AN7

P30–P35

P36/INT1

P37/INT0

P40, P41

XIN

XOUT

Function

•Apply voltage of 4.1 to 5.5 V (4.4 to 5.25 V at USB operating) to Vcc, and 0 V to Vss.

•Reference voltage input pin for A/D converter

•Output pin for pulling up a D- line with 1.5 k

Ω external resistor

•Chip operating mode control pin, which is always connected to Vss.

•Reset input pin for active “L”

•Input and output pins for main clock generating circuit

•Connect a ceramic resonator or quartz crystal oscillator between the XIN and XOUT pins.

•If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open.

Function expect a port function

Name

Power source

Analog reference

voltage

USB reference

voltage output

CNVss

Reset input

•8-bit I/O port.

•I/O direction register allows each pin to be individually pro-

grammed as either input or output.

•CMOS compatible input level

•CMOS 3-state output structure

•Whether a built-in pull-up resistor is to be used or not can be

determined by program.

•7-bit I/O port

•I/O direction register allows each pin to be individually pro-

grammed as either input or output.

•CMOS compatible input level

•CMOS 3-state output structure

•CMOS/TTL level can be switched for P10, P12, P13.

•When using the USB function, input level of ports P10 and

P11 becomes USB input level, and output level of them

becomes USB output level.

•8-bit I/O port having almost the same function as P0

•CMOS compatible input level

•CMOS 3-state output structure

Clock input

Clock output

I/O port P0

I/O port P1

I/O port P2

I/O port P3

I/O port P4

•Whether a built-in pull-up resistor is to be used or not can be

determined by program.

•2-bit I/O port

•I/O direction register allows each pin to be individually programmed as either input or output.

•Key-input (key-on wake up

interrupt input) pins

•Serial I/O1 function pin

•Serial I/O2 function pin

•Timer X function pin

•Input pins for A/D converter

•Interrupt input pins

•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/TTL level can be switched for P36, P37).

•CMOS 3-state output structure

•P30 to P36 can output a large current for driving LED.

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