參數(shù)資料
型號: MC56F8322VFAE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數(shù)字信號處理
英文描述: 0-BIT, 120 MHz, OTHER DSP, PQFP48
封裝: ROHS COMPLIANT, LQFP-48
文件頁數(shù): 63/136頁
文件大小: 719K
代理商: MC56F8322VFAE
56F8322 Techncial Data, Rev. 16
32
Freescale Semiconductor
Preliminary
Part 4 Memory Map
4.1 Introduction
The 56F8322 and 56F8122 devices are 16-bit motor-control chips based on the 56800E core. These parts
use a Harvard-style architecture with two independent memory spaces for Data and Program. On-chip
RAM and Flash memories are used in both spaces.
This section provides memory maps for:
Program Address Space, including the Interrupt Vector Table
Data Address Space, including the EOnCE Memory and Peripheral Memory Maps
On-chip memory sizes for the device are summarized in Table 4-1. Flash memories’ restrictions are
identified in the “Use Restrictions” column of Table 4-1.
Note: Data Flash and Program RAM are NOT available on the 56F8122 device.
4.2 Program Map
The Program Memory map is located in Table 4-2. The operating mode control bits (MA and MB) in the
Operating Mode Register (OMR) usually control the Program Memory map. Because the 56F8322 and
56F8122 do not include EMI, the OMR MA bit, which is used to decide internal or external BOOT, will
have no effect on the Program Memory Map. OMR MB reflects the security status of the Program Flash.
After reset, changing the OMR MB bit will have no effect on the Program Flash.
Table 4-1 Chip Memory Configurations
On-Chip Memory
56F8322
56F8122
Use Restrictions
Program Flash
32KB
Erase / Program via Flash interface unit and word writes
to CDBW
Data Flash
8KB
Erase / Program via Flash interface unit and word writes
to CDBW. Data Flash can be read via either CDBR or
XDB2, but not by both simultaneously.
Program RAM
4KB
None
Data RAM
8KB
None
Program Boot Flash
8KB
Erase / Program via Flash Interface unit and word
writes to CDBW
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