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PC912XDP512F0CFVR bảng dữ liệu(PDF) 654 Page - Freescale Semiconductor, Inc

tên linh kiện PC912XDP512F0CFVR
Giải thích chi tiết về linh kiện  HCS12X Microcontrollers
PDF  1348 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC912XDP512F0CFVR bảng dữ liệu(HTML) 654 Page - Freescale Semiconductor, Inc

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Chapter 18 Memory Mapping Control (S12XMMCV3)
MC9S12XDP512 Data Sheet, Rev. 2.21
654
Freescale Semiconductor
18.1.4.2
Functional Modes
•
Single chip modes
In normal and special single chip mode the internal memory is used. External bus is not active.
•
Expanded modes
Address, data, and control signals are activated in normal expanded and special test modes when
accessing the external bus. Access to internal resources will not cause activity on the external bus.
•
Emulation modes
External bus is active to emulate, via an external tool, the normal expanded or the normal single
chip mode.
18.1.5
Block Diagram
Figure 18-11 shows a block diagram of the MMC.
Figure 18-1. MMC Block Diagram
18.2
External Signal Description
The user is advised to refer to the SoC Guide for port configuration and location of external bus signals.
Some pins may not be bonded out in all implementations.
Table 18-2 and Table 18-3 outline the pin names and functions. It also provides a brief description of their
operation.
1. Doted blocks and lines are optional. Please refer to the Device User Guide for their availlibilities.
Peripherals
FLASH
XGATE
CPU
BDM
Target Bus Controller
DBG
EEPROM
EBI
MMC
Address Decoder & Priority
RAM
FLEXRAY



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