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| 型號(hào)： | MC9S12XDQ256CAG |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | LEAD FREE, LQFP-144 |
| 文件頁(yè)數(shù)： | 981/1348頁(yè) |
| 文件大?。?/td> | 7416K |
| 代理商： | MC9S12XDQ256CAG |
Chapter 18 Memory Mapping Control (S12XMMCV3)
MC9S12XDP512 Data Sheet, Rev. 2.21
668
Freescale Semiconductor
The xed 16K page from 0x4000–0x7FFF (when ROMHM = 0) is the page number 0xFD.
The reset value of 0xFE ensures that there is linear Flash space available between addresses 0x4000 and
0xFFFF out of reset.
The xed 16K page from 0xC000-0xFFFF is the page number 0xFF.
18.3.2.9
RAM Write Protection Control Register (RAMWPC)
Read: Anytime
Write: Anytime
Table 18-14. PPAGE Field Descriptions
Field
Description
7–0
PIX[7:0]
Program Page Index Bits 7–0 — These page index bits are used to select which of the 256 FLASH or ROM
array pages is to be accessed in the Program Page Window.
Address: 0x011C
76543210
Reset
00000000
= Unimplemented or Reserved
Figure 18-17. RAM Write Protection Control Register (RAMWPC)
Table 18-15. RAMWPC Field Descriptions
Field
Description
0
RWPE
RAM Write Protection Enable — This bit enables the RAM write protection mechanism. When the RWPE bit
is cleared, there is no write protection and any memory location is writable by the CPU module and the XGATE
module. When the RWPE bit is set the write protection mechanism is enabled and write access of the CPU or
to the XGATE RAM region. Write access performed by the XGATE module to outside of the XGATE RAM region
or the shared region is suppressed as well in this case.
0 RAM write protection check is disabled, region boundary registers can be written.
1 RAM write protection check is enabled, region boundary registers cannot be written.
1
AVIE
CPU Access Violation Interrupt Enable — This bit enables the Access Violation Interrupt. If AVIE is set and
AVIF is set, an interrupt is generated.
0 CPU Access Violation Interrupt Disabled.
1 CPU Access Violation Interrupt Enabled.
0
AVIF
CPU Access Violation Interrupt Flag — When set, this bit indicates that the CPU has tried to write a memory
location inside the XGATE RAM region. This ag can be reset by writing ’1’ to the AVIF bit location.
0 No access violation by the CPU was detected.
1 Access violation by the CPU was detected.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC9S12XDQ256MAG | 制造商:Freescale Semiconductor 功能描述: |
| MC9S12XDQ256VPV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC9S12XDQ512CPV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC9S12XDT256CAA | 功能描述:16位微控制器 - MCU 9S12XDT256 TSMC3 GENERAL RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC9S12XDT256CAAR | 功能描述:16位微控制器 - MCU 9S12XDT256 TSMC3 GEN RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
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