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Z51F6412
Product Specification
PS030302-0212
P R E L I M I N A R Y
50
10.11 Interrupt Timing
Interrupt source sampled at last cycle of the command. When sampling interrupt source, it is decided
to low 8-bit of interrupt vector. M8051W core makes interrupt acknowledge at first cycle of command,
executes long call to jump interrupt routine as INT_VEC.
Note) command cycle C?P?: L=Last cycle, 1=1
st
cycle or 1
st
phase, 2=2
nd
cycle or 2
nd
phase
CLP2
CLP1
C2P1
C1P1
C2P2
C1P2
CLP2
Interrupt sampled here
8-Bit interrupt Vector
INT_SRC
INTR_ACK
LAST_CYC
INTR_LCALL
INT_VEC
PROGA
SCLK
{8’h00, INT_VEC}
Figure 10-9 Timing chart of Interrupt Acceptance and Interrupt Return Instruction