4508 datasheet(59/142 Pages) RENESAS

59 / 142 page

4508 Group

Rev.1.02

2006.12.22

page 59 of 140

REJ03B0148-0102

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

55 shows the pin connections.

Refer to Figure 56 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)

• Power supply voltage pin.

• GND pin.

• QzROM programmable power source pin.

• VPP input is possible with VSS connected via a resistor of about 5 k

Ω.

• QzROM serial data I/O pin.

• QzROM serial clock input pin.

• QzROM read/program pulse input pin.

• Reset input pin.

• Input “L” level signal.

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

XOUT pin open.

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

VDD

VSS

CNVSS

P20/AIN0

P21/AIN1

D3/AIN5

____________

RESET

XIN

XOUT

D0, D1, D2/AIN4,

P00/SIN, P01/SOUT,

P02/SCK, P03, P10,

P11/CNTR1,

P12/CNTR0, P13/INT

Power source

GND

VPP input

SDA input/output

SCLK input

________

PGM input

Reset input

Clock input

Clock output

I/O port

Function

Name



I/O

Input



I/O

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