Datasheet

MC68HC812A4 Data Sheet, Rev. 7
230 Freescale Semiconductor Electrical Characteristics
Figure 18-4. WAIT Recovery Timing Diagram
Figure 18-5. Interrupt Timing Diagram
t
PCSU
PC, IY, IX, B:A, , CCR
STACK REGISTERS
ECLK
R/W
ADDRESS
IRQ, XIRQ,
OR INTERNAL
INTERRUPTS
SP – 2 SP – 4
SP – 6 . . . SP – 9
SP – 9
SP – 9. . . SP – 9
SP – 9
VECTOR
FREE
1ST
2ND
3RD
PIPE
t
WRS
Note: RESET also causes recovery from WAIT.
ADDRESS
PIPE
PIPE
1ST
EXEC
ECLK
PW
IRQ
1ST3RD
ADDRESS
IRQ
(1)
SP – 9
t
PCSU
IRQ
(2)
, XIRQ,
OR INTERNAL
INTERRUPT
VECTOR
SP – 2
1ST
SP – 4 SP – 6
2ND
SP – 8
DATA
VECT PC IY IX
B:A
CCR
PROG
R/W
Notes:
1. Edge sensitive IRQ
pin (IRQE bit = 1)
2. Level sensitive IRQ
pin (IRQE bit = 0)
FETCH
ADDR
EXECPIPEPIPEPIPE
PROG
FETCH
PROG
FETCH