3. APPE NDIX
173
MITSUBISHI MICROCOMPUTER
3819 Group
3.1 Notes on use
3819 Group USER’S MANUAL
3.1.7 Notes on built-in PROM
(1) Programming adapter
To write into or read from data the internal PROM, use the dedicated programming adapter and general-purpose
PROM programmer as shown in Table 3.1.1.
Table 3.1.1 Programming adapter
Microcomputer
M38197EAFS
M38197EAFP
(one-time blank)
Programming adapter
PCA4738L-100A
PCA4738F-100A
(2) Write and read
In PROM mode, operation is the same as that of the M5M27C101, but programming conditions of PROM
programmer are not set automatically because there are no built-in device ID codes.
Accurately set the following conditions for data write/read. Do not apply 21 V to the Vpp pin (is also used as port
P4
0
), or the product may be permanently damaged.
G
Programming voltage : 12.5 V
G
Setting of programming adapter switch : refer to “
Table 3.1.2
”
G
Setting of PROM programmer address : refer to “
Table 3.1.3
”
Table 3.1.2 Setting of programming adapter switch
Programming adapter
PCA4738L-100A
PCA4738F-100A
SW 1
P-channel
SW 2
OFF
(CMOS)
SW 3
OFF
Table 3.1.3 Setting of PROM programmer address
Microcomputer
M38197EAFS
M38197EAFP
PROM programmer completion address
(Note)
Address : FFFD
16
PROM programmer start address
(Note)
Address : 6080
16
Note :
Because addresses 6000
16
to 607F
16
and FFFE
16
to FFFF
16
are the reserved ROM area, do not use these
addresses.
(3) Erasing
Contents of the windowed EPROM (38197 EAFS) are erased by an ultraviolet light source with the wavelength
2537-Angstrom . At least 15 W
sec/cm are required to erase EPROM contents.