Renesas PCA4738S-42A Spezifikationen PDF herunterladen (Seite 42)

3851 Group

(Built-in 16 KB ROM)

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

DATA REQUIRED FOR MASK ORDERS

The following are necessary when ordering a mask ROM produc-

tion:

1.Mask ROM Order Confirmation Form

✽

2.Mark Specification Form

✽

3.Data to be written to ROM, in EPROM form (three identical cop-

ies)

DATA REQUIRED FOR ROM WRITING

ORDERS

The following are necessary when ordering a ROM writing:

1.ROM Writing Confirmation Form

✽

2.Mark Specification Form

✽

(only special mark with customer’s

trade mark logo)

3.Data to be written to ROM, in EPROM form (three identical cop-

ies)

✽For the mask ROM confirmation and the mark specifications, re-

fer to the “Mitsubishi MCU Technical Information” Homepage

(http://www.infomicom.maec.co.jp/indexe.htm).

ROM PROGRAMMING METHOD

The built-in PROM of the blank One Time PROM version and built-

in EPROM version can be read or programmed with a

general-purpose PROM programmer using a special programming

adapter. Set the address of PROM programmer in the user ROM

area.

Fig. 49 Programming and testing of One Time PROM version

Table 10 Programming adapter

Package

42P2R-A

42P4B

Name of Programming Adapter

PCA4738F-42A

PCA4738S-42A

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 49 is recommended to verify programming.

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 :

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 54 55

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