MC68HC08AZ60A Datasheet, PDF (461/480 Pages) Motorola, Inc – Microcontrollers

Advance Information — MC68HC08AZ60A
Section 26. MC68HC08AZ60A Changes
26.1 Contents
26.2 Significant Changes from the MC68HC08AZ60 (Non-A Suffix
Device) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
26.2.1 Monitor ROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
26.2.2 EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
26.2.3 Mask Option Registers . . . . . . . . . . . . . . . . . . . . . . . . . .462
26.2.4 Low-Voltage Inhibit (LVI) . . . . . . . . . . . . . . . . . . . . . . . . . 463
26.2 Significant Changes from the MC68HC08AZ60 (Non-A Suffix Device)
26.2.1 Monitor ROM
The monitor ROM is now allocated 320 bytes within the memory map
though not all that space is necessarily used. Functionality of the monitor
ROM is unchanged.
26.2.2 EEPROM
26.2.2.1 EEPROM Architecture
The EEPROM-1 and EEPROM-2 are made from a new NVM
technology. However, the bit polarity remains the same i.e.
programmed=0, erased=1.
26.2.2.2 EEPROM Clock Source and Pre-scaler
The first major difference on the new EEPROM is that it requires a
constant time base source to ensure secure programming and erase
operations. This is done by firstly selecting which clock source is going
MC68HC08AZ60A — Rev 0.0
MOTOROLA
MC68HC08AZ60A Changes
Advance Information
461