M38269EBFS datasheet(60/91 Pages) RENESAS

60 / 91 page

Rev.1.00

Sep 06, 2006

page 60 of 88

REJ03B0181-0100

3826 Group (One Time PROM version)

NOTES ON USE

Power Source Voltage

When the power source voltage value of a microcomputer is less

than the value which is indicated as the recommended operating

conditions, the microcomputer does not operate normally and may

perform unstable operation.

In a system where the power source voltage drops slowly when

the power source voltage drops or the power supply is turned off,

reset a microcomputer when the power source voltage is less than

the recommended operating conditions and design a system not

to cause errors to the system by this unstable operation.

Name of Programming Adapter

PCA4738F-100A

PCA4738G-100A

PCA4738L-100A

Package

PRQP0100JB-A

PLQP0100KB-A

100D0

The PROM of the blank One Time PROM version is not tested or

screened in the assembly process and following processes. To en-

sure proper operation after programming, the procedure shown in

Figure 68 is recommended to verify programming.

ROM PROGRAMMING METHOD

The built-in PROM of the blank One Time PROM version can be

read or programmed with a general-purpose PROM programmer

using a special programming adapter. Set the address of PROM

pro-grammer in the user ROM area.

Table 14 Special programming adapter

Fig. 68 State transitions of system clock

Programming with PROM

programmer

Screening (Caution)

(150 °C for 40 hours)

Verification with

PROM programmer

Functional check in

target device

The screening temperature is far higher

than the storage temperature. Never

expose to 150 °C exceeding 100 hours.

Caution :

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