LFEBS12UB Freescale Semiconductor, LFEBS12UB Datasheet - Page 380
LFEBS12UB
Manufacturer Part Number
LFEBS12UB
Description
KIT STUDENT LEARNING S12 DG128
Manufacturer
Freescale Semiconductor
Specifications of LFEBS12UB
Architecture
8/16-bit
Code Gen Tools Included
Code Warrior
Silicon Manufacturer
Freescale
Core Architecture
S12
Core Sub-architecture
S12
Silicon Core Number
MC9S12
Silicon Family Name
S12D
Kit Contents
HCS12 DG128 Learning Kit
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Chapter 10 XGATE (S12XGATEV3)
10.4.5
Upon detecting an error condition caused by erratic application code, the XGATE module will
immediately terminate program execution and trigger a non-maskable interrupt to the S12X_CPU. There
are three error conditions:
All opcodes which are not listed in section
opcode fetches as well as illegal load and store accesses are defined on chip level. Refer to the
S12X_MMC Section for a detailed information.
380
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
•
•
•
Execution of an illegal opcode
Illegal opcode fetches
Illegal load or store accesses
Software Error Detection
When executing a branch (BCC, BCS,...), a jump (JAL) or an RTS
instruction, the XGATE prefetches and discards the opcode of the following
instruction. The XGATE will perform its software error handling actions
(see above) if this opcode fetch is illegal.
Figure 10-25. Algorithm for Locking and Releasing Semaphores
S12X_CPU
1 ⇒ XGSEM[n]
0 ⇒ XGSEM[n]
XGSEM[n] 1?
sequence
critical
.........
.........
code
MC9S12XE-Family Reference Manual , Rev. 1.23
Section 10.8, “Instruction Set”
NOTE
XGATE
sequence
critical
CSEM
SSEM
.........
.........
BCC?
code
are illegal opcodes. Illegal
Freescale Semiconductor
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