7542 datasheet(91/122 Pages) RENESAS

91 / 122 page

7542 Group

Rev.3.03

Jul 11, 2008

Page 91 of 117

REJ03B0006-0303

Pin name

Signal name

I/O

VCC,VSS

Power supply

CNVSS

RESET

Reset input

XIN

Clock input

XOUT

Clock output

VREF

Reference voltage input

P00–P03

I/O port P0

I/O

P04

RxD input

P05

TxD output

P06

SCLK input

P07

BUSY output

P10–P14

I/O port P1

I/O

P20–P27

I/O port P2

I/O

P30, P31, P33–P36

I/O port P3

I/O

P32

CE input

P37

RP input

(2) Standard serial I/O mode 2

Table 14 Description of pin function (standard serial I/O mode 2)

Function

Apply 2.7 to 5.5 V to the Vcc pin and 0 V to the Vss pin.

After input of port is set, input “H” level.

Reset input pin. System operates when RESET pin is set to “H” level after

CNVss pin is set to “H” level.

Connect an oscillation circuit between the XIN and XOUT pins.

As for the connection method, refer to the “clock generating circuit”.

(When system operates only by the on-chip oscillator, an external circuit is not

required.)

Apply reference voltage of A/D to this pin.

Input “L” or “H” level, or keep open.

Serial data input pin.

Serial data output pin.

Input “L” level.

BUSY signal output pin.

Input “L” or “H” level, or keep open.

Input “H” level.

Input “L” level.

7542 Datasheet(PDF) 91 Page - Renesas Technology Corp

7542 Datasheet(HTML) 91 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