PC312XDP512F0CFVR datasheet(1162/1348 Pages) FREESCALE

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Chapter 28 256 Kbyte Flash Module (S12XFTX256K2V1)

MC9S12XDP512 Data Sheet, Rev. 2.21

1164

Freescale Semiconductor

28.3.2.9

Flash Address Registers (FADDR)

The FADDRHI and FADDRLO registers are the Flash address registers.

All FADDRHI and FADDRLO bits are readable but are not writable. After an array write as part of a

command write sequence, the FADDR registers will contain the mapped MCU address written.

28.3.2.10 Flash Data Registers (FDATA)

The FDATAHI and FDATALO registers are the Flash data registers.

Table 28-17. FCTL Field Descriptions

Field

Description

6:0

NV[6:0]

Nonvolatile Bits — The NV[6:0] bits are available as nonvolatile bits. Refer to the Device User Guide for proper

use of the NV bits.

76543210

FADDRHI

Reset

00000000

= Unimplemented or Reserved

Figure 28-16. Flash Address High Register (FADDRHI)

76543210

FADDRLO

Reset

00000000

= Unimplemented or Reserved

Figure 28-17. Flash Address Low Register (FADDRLO)

76543210

FDATAHI

Reset

00000000

= Unimplemented or Reserved

Figure 28-18. Flash Data High Register (FDATAHI)

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