mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 514
mc9s12e256
Manufacturer Part Number
mc9s12e256
Description
Hcs12 Microcontrollers 16-bit Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12E256.pdf
(602 pages)
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Chapter 18 Multiplexed External Bus Interface (MEBIV3)
18.3
A summary of the registers associated with the MEBI sub-block is shown in
descriptions of the registers and bits are given in the subsections that follow. On most chips the registers
are mappable. Therefore, the upper bits may not be all 0s as shown in the table and descriptions.
18.3.1
514
Memory Map and Register Definition
Address
0x00032
0x00033
0x000A
0x000B
0x000C
0x000D
0x000E
0x001E
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x000F
Offset
Module Memory Map
Port A Data Register (PORTA)
Port B Data Register (PORTB)
Data Direction Register A (DDRA)
Data Direction Register B (DDRB)
Reserved
Reserved
Reserved
Reserved
Port E Data Register (PORTE)
Data Direction Register E (DDRE)
Port E Assignment Register (PEAR)
Mode Register (MODE)
Pull Control Register (PUCR)
Reduced Drive Register (RDRIV)
External Bus Interface Control Register (EBICTL)
Reserved
IRQ Control Register (IRQCR)
Port K Data Register (PORTK)
Data Direction Register K (DDRK)
MC9S12E256 Data Sheet, Rev. 1.08
Table 18-2. MEBI Memory Map
Use
Table
18-2. Detailed
Freescale Semiconductor
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R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
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