NEC PD754144 User Manual page 241

4-bit single-chip microcontrollers
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(4) Explanation of machine cycle field
S indicates the number of machine cycles required for an instruction with skip to execute the skip operation.
The value of S varies as follows.
When skip is executed .............................................................................. S = 0
When 1- or 2-byte instruction is skipped ................................................. S = 1
When 3-byte instruction
Note 3-byte instructions: BR !addr, BRA !addr1, CALL !addr, CALLA !addr1
Caution
The GETI instruction is skipped in one machine cycle.
One machine cycle is equal to one cycle of CPU clock Φ (= t
Figure 6-15 Processor Clock Control Register Format).
CHAPTER 11 INSTRUCTION SET
Note
is skipped .................................................... S = 2
User's Manual U10676EJ3V0UM
), and four times can be set by PCC (refer to
CY
241

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