MC68HC812A4 Datasheet, PDF (331/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

INTERNAL
CLOCKS
IRQ¹
IRQ
or XIRQ
ECLK
ADDRESS⁴
SP-6 SP-8 SP-9
ADDRESS^{5 SP-6 SP-8 SP-9}
PW_IRQ
t_STOPDELAY(3)
FREE
FREE
OPT 1ST
FETCH EXEC
Resume program with instruction which follows the STOP instruction.
FREE VECTOR FREE
1ST
PIPE
2ND
PIPE
3RD
PIPE
1ST
EXEC
Notes:
1. Edge-sensitive IRQ pin (IRQE bit = 1)
2. Level-sensitive IRQ pin (IRQE bit = 0)
3. t_STOPDELAY = 4098 t_cyc if DLY bit = 1 or 2 t_cyc if DLY = 0.
4. XIRQ with X bit in CCR = 1.
5. IRQ or (XIRQ with X bit in CCR = 0)
Figure 18-3. STOP Recovery Timing Diagram