MC68HC05PV8 Datasheet, PDF (163/196 Pages) Freescale Semiconductor, Inc – Techinal Data - rev 1.9

Freescale Semiconductor, Inc.
Technical Data — MC68HC(8)05PV8/A
14.1 Contents
Section 14. Program EEPROM
14.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
14.3 Programming Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
14.4 EEPROM Protection Mechanism . . . . . . . . . . . . . . . . . . . . . . 165
14.5 Options Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
14.2 Introduction
The Program EEPROM on the MC68HC805PV8 is 7936 bytes and is
located from address $2000 to $3EFF. It also holds 16 bytes of user
vectors ranging from $3FF0 to $3FFF. Programming circuitry embedded
in the EEPROM block allows a group of up to four different bytes to be
written or erased simultaneously. These four bytes must be located in
the set of addresses which differ only in the two least significant bits. An
internal charge pump is provided, avoiding the necessity to supply a high
voltage for erase and programming functions. In order to achieve a
higher degree of security for stored data, there is no capability for bulk
or row erase in single chip mode.
MC68HC(8)05PV8/A — Rev. 1.9
Program EEPROM
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Technical Data