st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 309

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
11.2.2
Note:
These prebytes enable instruction in Y as well as indirect addressing modes to be
implemented. They precede the opcode of the instruction in X or the instruction using direct
addressing mode. The prebytes are:
PDY 90
PIX 92
PIY 91
Illegal opcode reset
In order to provide enhanced robustness to the device against unexpected behavior, a
system of illegal opcode detection is implemented. If a code to be executed does not
correspond to any opcode or prebyte value, a reset is generated. This, combined with the
Watchdog, allows the detection and recovery from an unexpected fault or interference.
A valid prebyte associated with a valid opcode forming an unauthorized combination does
not generate a reset.
Replace an X based instruction using immediate, direct, indexed, or
inherent addressing mode by a Y one.
Replace an instruction using direct, direct bit, or direct relative
addressing mode to an instruction using the corresponding indirect
addressing mode. It also changes an instruction using X indexed
addressing mode to an instruction using indirect X indexed
addressing mode.
Replace an instruction using X indirect indexed addressing mode by
a Y one.
Instruction set
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