MC9S12XDP512CFU
Model | MC9S12XDP512CFU |
Description | 16-BIT, FLASH, 40MHz, MICROCONTROLLER, PQFP80 |
PDF file | Total 1348 pages (File size: 8M) |
Chip Manufacturer | PHILIPS |
Chapter 25 2 Kbyte EEPROM Module (S12XEETX2KV1)
25.1.4
Block Diagram
A block diagram of the EEPROM module is shown in
Figure 25-1.
EETX2K
EEPROM
Interface
Command
Interrupt
Request
Command Pipeline
EEPROM
cmd2
addr2
data2
cmd1
addr1
data1
1K * 16 Bits
sector 0
sector 1
Registers
Protection
sector 511
Oscillator
Clock
Clock
Divider
EECLK
Figure 25-1. EETX2K Block Diagram
25.2
External Signal Description
The EEPROM module contains no signals that connect off-chip.
25.3
Memory Map and Register Definition
This section describes the memory map and registers for the EEPROM module.
25.3.1
Module Memory Map
The EEPROM memory map is shown in
Figure 25-2.
The HCS12X architecture places the EEPROM
memory addresses between global addresses 0x13_F800 and 0x13_FFFF. The EPROT register, described
in
Section 25.3.2.5, “EEPROM Protection Register (EPROT)”,
can be set to protect the upper region in the
EEPROM memory from accidental program or erase. The EEPROM addresses covered by this protectable
MC9S12XDP512 Data Sheet, Rev. 2.21
1040
Freescale Semiconductor