S912XEP768J5MAGR Freescale Semiconductor, S912XEP768J5MAGR Datasheet - Page 388

• Manufacturer Part Number: S912XEP768J5MAGR
• Description: 16-bit Microcontrollers - MCU 16-bit 768K Flash
• Manufacturer: Freescale Semiconductor

Specifications of S912XEP768J5MAGR

• Rohs: yes
• Core: HCS12X
• Processor Series: MC9S12
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 768 KB
• Data Ram Size: 48 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.3 V to 5 V
• Operating Temperature Range: - 40 C to + 125 C
• Package / Case: LQFP-144
• Mounting Style: SMD/SMT

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.
388
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.
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. 1.25
Table 10-23. Access Detail Notation
Figure
10-1) it first executes a vector fetch
Freescale Semiconductor