M34571GD datasheet(51/126 Pages) RENESAS

51 / 126 page

Rev.1.02

May 25, 2007

Page 51 of 124

REJ03B0179-0102

4571 Group

QzROM Writing Mode

In the QzROM writing mode, the user ROM area can be

rewritten while the microcomputer is mounted on-board by using

a serial pro-grammer which is applicable for this microcomputer.

Table 24 lists the pin description (QzROM writing mode) and

Figure 53 shows the pin connections.

Refer to Figure 54 for examples of a connection with a serial pro-

grammer.

Contact the manufacturer of your serial programmer for serial

pro-grammer. Refer to the user ’s manual of your serial

programmer for details on how to use it.

Table 24 Pin description (QzROM writing mode)

Name

I/O

Function

VDD

Power source

−

• Power supply voltage pin.

VSS

GND

−

• GND pin.

KVPP input

−

• QzROM programmable power source pin.

P01

SDA input/output

I/O

• QzROM serial data I/O pin.

P00

SCLK input

Input

• QzROM serial clock input pin.

P10

PGM input

Input

• QzROM read/program pulse input pin.

RESET

Reset input

Input

• Reset input pin.

• Input “L” level signal.

XIN

Clock input

−

• Either connect an oscillation circuit or connect XIN pin to VSS and leave

the XOUT pin open.

XOUT

Clock output

−

P02, P03, P11

−P13,

P20/INT0, P21/INT1, P30,

P31, D0

−D3, D4/CNTR0,

C/CNTR1

I/O port

I/O

• Input “H” or “L” level signal or leave the pin open.

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