
49
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3827 Group
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
copies)
DATA REQUIRED FOR ROM WRITING OR-
DERS
The following are necessary when ordering a ROM writing:
(1) ROM Writing Confirmation Form
(2) Mark Specification Form
(3) Data to be written to ROM, in EPROM form (three identical
copies)
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. 55 Programming and testing of One Time PROM version
Package
100PFB-A
100P6Q-A
100P6S-A
100D0
Name of Programming Adapter
Under development (PCA4738H-100A)
PCA4738G-100A
PCA4738F-100A
PCA4738L-100A
Table 10 Special programming adapter
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 55 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 :