7643 datasheet(99/121 Pages) RENESAS

99 / 121 page

Rev.2.00

Aug 28, 2006

page 99 of 119

7643 Group

REJ03B0054-0200

Table 23 Description of pin function (Standard Serial I/O Mode)

Pin nameSignal nameI/OFunction

VCC,VSS

Power supply inputApply 4.50 V – 5.25 V for 5 V version or 3.00 V – 3.60 V for 3 V version to

the VCC pin. Apply 0 V to the Vss pin.

CNVSS

This controls the MCU operating mode. Connect this pin to VPP (= 4.50 V –

5.25 V

Reset inputTo reset, input “L” level for 20 cycles or longer clocks of

φ.

RESET

XIN

Clock input

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

When inputting an externally derived clock, input it from XIN and leave

XOUT open.

XOUT

Clock output

AVCC, AVSS

Analog power supply input

LPFLPFO

Loop filter for the frequency synthesizer. When this pin is not used, leave

this open.

Ext.Cap

3.3 V line power supply input

P00 to P07

I/O

USB D+

USB D+ signal port. When this pin is not used, input “H” level.

USB D+

USB D-

P10 to P17

P80

BUSY output

P81

SCLK input

I/O

Apply 4.50 V – 5.25 V for 5 V version or 3.00 V – 3.60 V for 3 V version to

the AVCC pin. Apply 0 V to the AVss pin.

USB D- signal port. When this pin is not used, input “L” level.

Power supply input pin for 3.3 V USB line driver. When this pin is not used,

input “H” level.

When these ports are not used, input “L” or “H” level, or leave them open in

output mode.

I/O port P0

I/O

I/O port P1

I/O

P20 to P27

I/O port P2

P30 to P35, P37

I/O

P40 to P44

I/O port P3I/O

I/O port P4

I/O

P50 to P57

I/O port P5

I/O

P60 to P67

I/O port P6

I/O

P70 to P74

I/O port P7

This is a BUSY output pin.

This is a serial clock input pin.

P82

SRXD inputThis is a serial data input pin.

P83

STXDoutput

This is a serial data output pin.

P84 to P87

When these ports are not used, input “L” or “H” level, or leave them open in

output mode.

I/O port P8

I/O

P36

CE input

When these ports are not used, input “L” or “H” level, or leave them open in

output mode.

Input “H” level.

7643 Datasheet(PDF) 99 Page - Renesas Technology Corp

7643 Datasheet(HTML) 99 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL