S912XEQ512J3CAGR Freescale Semiconductor, S912XEQ512J3CAGR Datasheet - Page 228
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
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Chapter 4 Memory Protection Unit (S12XMPUV1)
access is allowed or represents an access violation. If an access violation caused by the S12X CPU is
detected, the MPU module raises an access violation interrupt. If the MPU module detects an access
violation caused by a bus master other than the S12X CPU, it flags an access error condition to the
respective master. In addition to the restrictions defined for memory ranges in the MPU descriptors,
accesses to memory not covered by any MPU descriptor (even read accesses!) are considered access
violations.
Figure 4-1
4.1.3
1. Master 3 can be implemented or left out depending the chip configuration. Please refer to the Device Reference Manual for
information about the availability and function of Master 3.
228
•
•
CPU
XGATE
“Master3”
Protects memory from undesired accesses coming from up to 3 bus masters
Eight memory protection descriptors
— each descriptor can cover the full global memory map (8 MBytes)
— each descriptor has a granularity of 8 Bytes
Data Access
Op-code Fetch
Data Access
Op-code Fetch
Data Access
shows a block diagram of the MPU module.
Features
MC9S12XE-Family Reference Manual Rev. 1.25
Figure 4-1. Block Diagram
Access Validation
Access Validation
Access Validation
MPU Monitoring
MPU Monitoring
MPU Monitoring
MMC
Access Violation
Interrupt
1
Freescale Semiconductor
Registers
Status
MPU
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