MC68HC908JB8 Datasheet, PDF (53/286 Pages) Motorola, Inc – MICROCONTROLLERS

Technical Data — MC68HC908JB8•MC68HC08JB8•MC68HC08JT8
Section 4. FLASH Memory
4.1 Contents
4.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
4.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
4.4 FLASH Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.5 FLASH Block Erase Operation . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.6 FLASH Mass Erase Operation . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.7 FLASH Program Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . .58
4.8 FLASH Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
4.8.1 FLASH Block Protect Register . . . . . . . . . . . . . . . . . . . . . . . 60
4.9 ROM-Resident Routines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4.9.1 Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.9.2 ERASE Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.9.3 PROGRAM Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4.9.4 VERIFY Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4.2 Introduction
This section describes the operation of the embedded FLASH memory.
This memory can be read, programmed, and erased from a single
external supply. The program and erase operations are enabled through
the use of an internal charge pump.
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
FLASH Memory
Technical Data
53