M38503MXH Datasheet, PDF (73/86 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DATA REQUIRED FOR MASK ORDERS
The following are necessary when ordering a mask ROM produc-
tion:
1. Mask ROM Order Confirmation Form^✽1
2. Mark Specification Form^✽2
3. Data to be written to ROM, in EPROM form (three identical cop-
ies) or one floppy disk.
DATA REQUIRED FOR One Time PROM
PROGRAMMING ORDERS
The following are necessary when ordering a PROM programming
service:
1. ROM Programming Confirmation Form^✽1
2. Mark Specification Form^✽2 (only special mark with customer’s
trade mark logo)
3. Data to be programmed to PROM, in EPROM form (three iden-
tical copies) or one floppy disk.
For the mask ROM confirmation and the mark specifications, refer
to the “Mitsubishi MCU Technical Information” Homepage.
✽1 Mask ROM Confirmation Forms
http://www.infomicom.mesc.co.jp/38000/38ordere.htm
✽2 Mark Specification Forms
http://www.infomicom.mesc.co.jp/mela/markform.htm
ROM PROGRAMMING METHOD
The built-in PROM of the blank One Time PROM version and buit-
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.
Table 27 Programming adapter
Package
Name of Programming Adapter
42P4B, 42S1B
PCA4738S-42A
42P2R-A/E
PCA4738F-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 75 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
Caution : The screening temperature is far higher
than the storage temperature. Never
expose to 150 °C exceeding 100 hours.
Fig. 75 Programming and testing of One Time PROM version
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