EVB9S12XEP100 Freescale Semiconductor, EVB9S12XEP100 Datasheet - Page 390

• Manufacturer Part Number: EVB9S12XEP100
• Description: BOARD EVAL FOR MC9S12XEP100
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of EVB9S12XEP100

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MC9S12XEP100
• Data Bus Width: 16 bit
• Interface Type: RS-232
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12XE
• Rohs Compliant: Yes
• For Use With/related Products: MC9S12XEP100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 10 XGATE (S12XGATEV3)
10.8.4
When the RISC core is triggered by an interrupt request (see
sequence which performs three bus accesses:
Afterwards a sequence of instructions (thread) is executed which is terminated by an "RTS" instruction. If
further interrupt requests are pending after a thread has been terminated, a new vector fetch will be
performed. Otherwise the RISC core will either resume a previous thread (beginning with a P-cycle to
refetch the interrupted opcode) or it will become idle until a new interrupt request is received. A thread can
only be interrupted by an interrupt request of higher priority.
10.8.5
This section describes the XGATE instruction set in alphabetical order.
390
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
1. A V-cycle to fetch the initial content of the program counter.
2. A V-cycle to fetch the initial content of the data segment pointer (R1).
3. A P-cycle to load the initial opcode.
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
V — Vector fetch: always an aligned word read, lasts for at least one RISC core cycle
P — Program word fetch: always an aligned word read, lasts for at least one RISC core cycle
r — 8 bit data read: lasts for at least one RISC core cycle
R — 16 bit data read: lasts for at least one RISC core cycle
w — 8 bit data write: lasts for at least one RISC core cycle
W — 16 bit data write: lasts for at least one RISC core cycle
A — Alignment cycle: no read or write, lasts for zero or one RISC core cycles
f — Free cycle: no read or write, lasts for one RISC core cycles
Special Cases
PP/P — Branch: PP if branch taken, P if not
Thread Execution
Instruction Glossary
MC9S12XE-Family Reference Manual , Rev. 1.23
Table 10-23. Access Detail Notation
Figure
10-1) it first executes a vector fetch
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