Freescale Semiconductor, Inc.
Ge ne ra l Re le a se Sp e c ific a tion — MC68HC705JJ7/ MC68HC705JP7
Se c tion 13. EPROM/ OTPROM
13.1 Conte nts
13.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
13.3 EPROM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
13.3.1
13.3.2
13.3.3
EPROM Programming Register (EPROG) . . . . . . . . . . . .180
Mask Option Register (MOR) . . . . . . . . . . . . . . . . . . . . . .181
EPROM Security Bit (EPMSEC) . . . . . . . . . . . . . . . . . . . .184
13.4 EPROM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184
13.4.1
13.4.2
MOR Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185
EPMSEC Programming. . . . . . . . . . . . . . . . . . . . . . . . . . .186
13.5 EPROM Erasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186
13.2 Introd uc tion
This section describes how to program the 6160-byte
EPROM/OTPROM, the mask option register (MOR), and the EPROM
security bit (EPMSEC).
NOTE: In packages with no quartz window, the EPROM functions as one-time
programmable ROM (OTPROM).
13.3 EPROM Re g iste rs
The EPROM programming register (EPROG) controls the actual
programming of the EPROM bytes and the MOR. The mask option
register (MOR) controls eight mask options found on the ROM version
of this MCU. There is an additional EPROM bit (EPMSEC) located at the
COP address to provide EPROM array security.
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
General Release Specification
EPROM/OTPROM
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