Abov MC96F8204 Series

76
MC96F8204
ABOV Semiconductor Co., Ltd.
10.11 Interrupt Timing
Figure 10.10 Timing Chart of Interrupt Acceptance and Interrupt Return Instruction
Interrupt sources are sampled at the last cycle of a command. If an interrupt source is detected the lower 8-bit of
interrupt vector (INT_VEC) is decided. M8051W core makes interrupt acknowledge at the first cycle of a command,
and executes long call to jump to interrupt service routine.
NOTE)
1. command cycle CLPx: 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}