S912XEQ512J3CAGR Freescale Semiconductor, S912XEQ512J3CAGR Datasheet - Page 237
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
S912XEQ512J3CAGR
Manufacturer Part Number
S912XEQ512J3CAGR
Description
16-bit Microcontrollers - MCU 16 BIT,512K FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEQ512J3CAGR.pdf
(1324 pages)
Specifications of S912XEQ512J3CAGR
Rohs
yes
Core
HCS12X
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
512 kB
Data Ram Size
32 kB
On-chip Adc
Yes
Package / Case
LQFP
Mounting Style
SMD/SMT
Interface Type
CAN/SCI/SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
119
Number Of Timers
25
Program Memory Type
Flash
Supply Voltage - Max
1.98 V, 2.9 V, 5.5 V
Supply Voltage - Min
1.72 V, 2.7 V, 3.13 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S912XEQ512J3CAGR
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 237 of 1324
- Download datasheet (5Mb)
4.4
The MPU module provides memory protection for accesses coming from multiple masters in the system.
This is done by monitoring bus traffic of each master and compare this with the configuration information
from a set of eight programmable descriptors located in the MPU module. If the MPU module detects an
access violation caused by the S12X CPU, it will assert the CPU access violation interrupt signal. If the
MPU module detects an access violation caused by a bus master other than the S12X CPU, it raises an
access error signal. Please refer to the documentation chapter of the individual master modules (i.e.
XGATE, etc.) for more information about the access error condition.
Violating accesses are not executed. The return value of a violating read access is undefined for both 8 bit
and 16 bit accesses.
4.4.1
Each of the eight protection descriptors can be used to restrict the allowed types of memory accesses for
a given memory range. Each of these memory ranges can cover up the entire 23 bits global memory range
(8 MBytes).
The descriptors are banked in the MPU module register map.
Each descriptor can be selected for modifying using the SEL bits in the MPU Descriptor Select (MPUSEL)
register.
Table 4-14
descriptors.
The granularity of each descriptor is 8 bytes. This means the protection comparators in the MPU module
cover only address bits [22:3] of each access. The lower address bits [2:0] are ignored.
Freescale Semiconductor
Functional Description
gives an overview of the types of accesses that can be configured using the protection
Protection Descriptors
Accesses from BDM are not restricted. BDM hardware accesses always
bypass the MPU module. During execution of BDM firmware code S12X
CPU accesses are masked from the MPU module as well.
A mis-aligned word access to the upper boundary address of a descriptor is
always flagged as an access violation.
MC9S12XE-Family Reference Manual Rev. 1.25
WP
0
0
1
1
Table 4-14. Access Types
NEX
0
1
0
1
NOTE
NOTE
read, write and execute
read and execute
read, write
read only
Meaning
Chapter 4 Memory Protection Unit (S12XMPUV1)
237
Related parts for S912XEQ512J3CAGR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![S912XEQ384J3MALR](/images/manufacturer_photos/0/2/262/freescale_semiconductor_tmb.jpg)
Part Number:
Description:
S912XEQ Series 16 Bit 50 Mhz 384 KB Flash 24 KB Ram Microcontroller - LQFP-112
Manufacturer:
Freescale Semiconductor
Datasheet:
![MC14560BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12034AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MPIC2112P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14520BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12026AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC145152P2](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC68HC11A0P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MCM6726DWJ10](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC44355](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC13282AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14519BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14495P1](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![SN74LS796N](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC142100CP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: