Z51F3220FNX Datasheet, PDF (90/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

10.6 Effective Timing after Controlling Interrupt Bit
Case a) Control Interrupt Enable Register (IE, IE1, IE2, IE3)
Z51F3220
Product Specification
Interrupt Enable Register
command
Next Instruction
Next Instruction
After executing IE set/clear, enable
register is effective.
Figure 10.4 Effective Timing of Interrupt Enable Register
Case b) Interrupt flag Register
Interrupt Flag Register
Command
Next Instruction
Next Instruction
After executing next instruction,
interrupt flag result is effective.
Figure 10.5 Effective Timing of Interrupt Flag Register
PS029902-0212
PRELIMINARY
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