MC9S12XD256VAG Freescale Semiconductor, MC9S12XD256VAG Datasheet - Page 626

• Manufacturer Part Number: MC9S12XD256VAG
• Description: IC MCU 256K FLASH 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12XD256VAG

• Core Processor: HCS12X
• Core Size: 16-Bit
• Speed: 80MHz
• Connectivity: CAN, EBI/EMI, I²C, IrDA, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 119
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 14K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 17 Memory Mapping Control (S12XMMCV2)
17.3.2.7
Read: Anytime
Write: Anytime
The EEPROM page index register allows accessing up to 256 Kbyte of EEPROM in the global memory
map by using the eight page index bits to page 1 Kbyte blocks into the EEPROM page window located in
the local CPU memory map from address $0800 to address $0BFF (see
The reset value of $FE ensures that there is a linear EEPROM space available between addresses $0800
and $0FFF out of reset.
The fixed 1K page $0C00–$0FFF of EEPROM is equivalent to page 255 (page number $FF).
626
Address: 0x0017
Reset
EP[7:0]
Field
7–0
W
R
EP7
0
EEPROM Page Index Bits 7–0 — These page index bits are used to select which of the 256 EEPROM array
pages is to be accessed in the EEPROM Page Window.
EEPROM Page Index Register (EPAGE)
1
7
XGATE write access to this register during an CPU access which makes use
of this register could lead to unexpected results.
0
1
EP6
1
6
Figure 17-13. EEPROM Page Index Register (EPAGE)
0
Figure 17-14. EPAGE Address Mapping
Table 17-12. EPAGE Field Descriptions
MC9S12XDP512 Data Sheet, Rev. 2.21
0
EP5
1
5
Bit17
Global Address [22:0]
EPAGE Register [7:0]
Bit16
CAUTION
EP4
1
4
Description
EP3
1
3
Bit10
Address: CPU Local Address
Bit9
Figure
EP2
or BDM Local Address
1
2
Address [9:0]
1-14).
Freescale Semiconductor
EP1
1
1
Bit0
EP0
0
0