Freescale Semiconductor, Inc.
Ge ne ra l Re le a se Sp e c ific a tion — MC68HC705JJ7/ MC68HC705JP7
Se c tion 12. Pe rsona lity EPROM
12.1 Conte nts
12.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171
12.3 PEPROM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
12.3.1
12.3.2
PEPROM Bit Select Register (PEBSR). . . . . . . . . . . . . . .173
PEPROM Status and Control Register (PESCR) . . . . . . .174
12.4 PEPROM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
12.5 PEPROM Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
12.6 PEPROM Erasing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
12.2 Introd uc tion
This section describes how to program the 64-bit personality EPROM
(PEPROM). Figure 12-1 shows the structure of the PEPROM
subsystem.
NOTE: In packages with no quartz window, the PEPROM functions as one-time
programmable ROM (OTPROM).
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
General Release Specification
Personality EPROM
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