s908az32ag2cfue Freescale Semiconductor, Inc, s908az32ag2cfue Datasheet - Page 51

• Manufacturer Part Number: s908az32ag2cfue
• Description: M68hc08 Microcontrollers 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 5
EEPROM
5.1 Introduction
This section describes the 512 bytes of electrically erasable programmable read-only memory (EEPROM)
residing at address range $0800 to $09FF.
5.2 Features
Features of the EEPROM include the following:
5.3 EEPROM Register Summary
The EEPROM Register Summary is shown in
5.4 Functional Description
The 512 bytes of EEPROM are located at $0800-$09FF and can be programmed or erased without an
additional external high voltage supply. The program and erase operations are enabled through the use
of an internal charge pump. For each byte of EEPROM, the write/erase endurance is 10,000 cycles.
5.4.1 EEPROM Configuration
The 8-bit EEPROM Nonvolatile Register (EENVR) and the 16-bit EEPROM Timebase Divider Nonvolatile
Register (EEDIVNVR) contain the default settings for the following EEPROM configurations:
EENVR and EEDIVNVR are nonvolatile EEPROM registers. They are programmed and erased in the
same way as EEPROM bytes. The contents of these registers are loaded into their respective volatile
registers during a MCU reset. The values in these read/write volatile registers define the EEPROM
configurations.
Freescale Semiconductor
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512 bytes Nonvolatile Memory
Byte, Block, or Bulk Erasable
Nonvolatile EEPROM Configuration and Block Protection Options
On-chip Charge Pump for Programming/Erasing
Security Option
AUTO Bit Driven Programming/Erasing Time Feature
EEPROM Timebase Reference
EEPROM Security Option
EEPROM Block Protection
MC68HC908AZ32A Data Sheet, Rev. 2
Figure
5-1.
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